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16th European Workshop
on
Phosphorus Chemistry
24-26 April 2019
Welcome to EWPC-16 and welcome to Bristol!
The European Workshop on Phosphorus Chemistry has a strong reputation for the fruitful exchange of
ideas and opinions through animated discussions in a convivial atmosphere. The aspects of
phosphorus chemistry covered by EWPC span organic, inorganic, polymer, materials and biological
chemistry.
EWPC gives early stage researchers the opportunity to communicate their work to the leading
European research groups in phosphorus chemistry. The program this year includes 33 oral
contributions from PhD students and 70 posters. The Workshop is preceded by the inaugural IndPhos
symposium which will showcase the P-chemistry that is important in industry today with 6 lectures from
leading industrial researchers. It is hoped that the perspective provided by IndPhos will stimulate
future academic-industrial collaborations.
Hansjörg Grützmacher, whose research has attracted much industrial interest, will present a talk that
will bridge IndPhos and EWPC-16.
I would like to thank the generous sponsors of the meeting, particularly Solvay, LANXESS, Strem,
Magritek, OCP, Glindemann and The Royal Society of Chemistry (Dalton Division).
IndPhos was the idea of Chris Slootweg (Univ. Amsterdam) and he has done the great bulk of the
work to make it happen. My group (pictured below) have been brilliant in injecting ideas and helping
with the administration of EWPC.
I hope you find the science absorbing and you enjoy your stay in Bristol.
Paul G Pringle
Callum Branfoot, Rachel Doyle, Sarah Williams, Ailis Chadwick, Lexy Miles-Hobbs, Dan Wise
1
24 April
09:20 Introduction
Paul Pringle (Univ. Bristol)
Chair: Chris Slootweg (Univ. Amsterdam)
09:30 Sustainable Industrial Phosphorus Chemistry
Willem Schipper WS Consulting
10:00 Real World Applications of Organophosphorus Chemistry
Chris Harris Solvay
10:30 Catalysis with P-ligands at BASF and New Developments at CaRLa
Thomas Schaub BASF
11:00 Coffee
11:30 Poly(alkylene phosphates)
Jan-Gerd Hansel LANXESS
12:00 IONQUEST for Solvent Extraction:
Industrial Scale-up of Diverse P-Chemistries
Steven van Zutphen Italmatch
12:30 Acylphosphine Oxide Photoinitiators: Some Recent Developments
Reinhard Sommerlade Independent Process Design Chemist
13:00 Lunch
14:00 Building blocks containing phosphorus for atom efficient syntheses
Hansjörg Grützmacher ETH, Zurich
15:00 Coffee
2
15:30 Introduction
Paul Pringle (Univ. Bristol)
Chair: Erica Neves de Faria (Univ. Oxford)
15:40 O1: Air-stable dialkylphosphine surrogates from zinc phosphide
Tom Barber
Univ. Nottingham, UK
16:00 O2: On the way to nucleophilic phosphinines
Friedrich Wossidlo
Freie Univ. Berlin, Germany
16:20 O3: Investigating the reactivity and reduction chemistry of cobalt diphosphine complexes
Claire Brodie
Durham Univ., UK
16th European Workshop on
Phosphorus Chemistry
Safe, convenient PH3 precursor
Operationally simple, ‘solvent free' alkylation
3
Wednesday 24 April
16:40 O4: Phosphaalkenes in organic chemistry
Nicolas D'Imperio
Uppsala Univ., Sweden
17:00 O5: Synthesis of cationic polypnictogen complexes
Luis Dütsch
Univ. Regensburg, Germany
17:20 O6: Convenient one-pot reaction for the synthesis of α-H-phosphinate and H-HMBPi salts
Jade Dussart
Univ. Paris, France
18:30 – 20:30 Reception on SS Great Britain
Wednesday 24 April 2019
4
Chair: Gabriele Hierlmeier (Univ. Regensberg)
09:00 O7: Investigation of optical and electronic properties of phosphole-based π-systems and phosphanylsiloles
Réka Mokrai
Budapest Univ. of Technology and Economics, Hungary
09:20 O8: Cyclic fluorophosphites: ligands that span the bonding space between phosphites and PF3
Lexy Miles-Hobbs
Univ. Bristol, UK
09:40 O9: Lewis base catalysed isomerisation of a phosphaethynolato- to phosphaketenylborane
Daniel Wilson
Univ. Oxford, UK
10:00 O10: Synthesis and characterization of sterically protected,functionalized 2,4-diphosphapentasilanes
Gernot Weinberger
TU Graz, Austria
10:20 O11: Phosphorandiylium (R3P)2+: a three-coordinate phosphorus dication
Tobias Eder
Univ. Münster, Germany
10:40 Coffee
5
Thursday 25 April 2019
Chair: Philipp Brehm (Univ. Bonn)
11:10 O12: New family of P-stereogenic phosphahelicenes
Julie Febvay
Institut de Chimie des Substances Naturelles, CNRS, France
First helically chiral BrØnsted acids
11:30 O13: Selective nitrile reduction using solid-supported triphos ligands: application in continuous flow
Robert Konrath
Univ. St Andrews, UK
11:50 O14: NHP-Nitrosyl complexes of iron
Christoph Feil
Univ. Stuttgart, Germany
12:10 O15: Investigation of microwave assisted Kabachnik-Fileds and Biginelli reactions
Nóra Tóth
Budapest Univ. of Technology and Economics, Hungary
12:30 O16: Abnormal reactions of N-heterocyclic carbenes with phosphaalkenes
Zeyu Han
Univ. British Columbia, Canada
12:50 Lunch
Thursday 25 April 2019
6
Chair: Daniel Buzsáki (Budapest Univ.)
14:20 O17: Synthesis and reactivity of 3H-phospha-allenes
Jonas Tendyck
Univ. Münster, Germany
14:40 O18: Frustrated radical pair formation
Flip Holtrop
Univ. Amsterdam, Netherlands
15:00 O19: Protolysis reaction and P/N–P/P bond metathesis for the synthesis of cationic polyphosphanes
Clemens Taube
Univ. Dresden, Germany
15:20 O20: Anionic N-heterocyclic carbenes for pnictogen complexes
Luong Phong Ho
Univ. Braunschweig, Germany
15:40 O21: Activation of CO2 and CS2 by diphosphane/BPh3 frustrated Lewis pairs
Natalia Szynkiewicz
Gdansk Univ., Poland
16:00 Coffee
Thursday 25 April 2019
7
Chair: Thomasine Curzon (Univ. St Andrews)
16:30 O22: Immobilization of P-based organocatalysts by plasma techniques
Yuya Hu
LIKAT Rostock, Germany
16:50 O23: Primary phosphanes with 2,6-bis-(benzhydryl)phenyl backbones
Tim Suhrbier
Univ. Rostock, Germany
17:10 O24: Reactivity of silane compounds with few-layer black phosphorus
Iñigo Iglesias
CNR-ICCOM, Italy
17:30 O25: Effect of aromatic substituents on formation and reactivity of Li/Cl phosphinidenoid complexes
Alexander Schmer
Univ. Bonn, Germany
17:50 O26: 1,2-Dihydrophosphetes: an unexplored P-containing four-membered ring for optoelectronic applications
Hortense Lauwick
Univ. Rennes, CNRS, France
18:30 Poster Event
Thursday 25 April 2019
8
Chair: Matteo Vanni (CNR-ICCOM)
09:00 O27: Exploiting peri-substitution to promote coupling reactions
Bethany Lawson
Univ. St Andrews, UK
C–H coupling via radical mechanism
09:20 O28: Silylation of Na3P assisted by phosphonium salts: A new route towards reactive P species
Grégoire Le Corre
ETH Zurich, Switzerland
09:40 O29: Catalytic transformation of white phosphorus into aryl phosphines and phosphonium salts
Ulrich Lennert
Univ. Regensburg, Germany
10:00 O30: Direct asymmetric Ru-phosphine-catalyzed reductive amination of aryl-alkyl ketones with NH3/H2
Maximilian Menche
BASF Catalysis Research Laboratory, Heidelberg, Germany
10:20 Coffee
Friday 26 April 2019
9
Chair: Steven Beijer (Univ. Amsterdam)
10:50 O31: Asymmetrically substituted phospholes: from fynthesis to imprinted structures
Fabian Roesler
Univ. Kassel, Germany
11:10 O32: Phospholes vs. arsoles: one ring to rule them all
Darren Ould
Cardiff Univ., UK
11:30 O33: Synthesis of heterobimetallic complexes from N,P-based heteroditopic ligands
Saral Baweja
Leipzig Univ., Germany
12:00 EWPC-17
12:15 Finale
12:30 Depart
Friday 26 April 2019
10
Posters
No. Title Name Affiliation
P1 Dehydrocoupling of phosphines mediated by alkali metal
catalysts
Vincent Annibale Univ. Bristol
P2 From McMurry to Wittig via phospha-alkenes: novel
approach to reductive carbonyl coupling
Anna Arkhypchuk Uppsala Univ.
P3 Reactions of isonitrile-to-phosphinidene complex
adducts
David Becker Univ. Bonn
P4 An organocatalytic Mitsunobu Esterification Reaction Rhydian Beddoe Univ. Nottingham
P5 Circular chemistry: the sustainable use of phosphorus Steven Beijer Univ. Amsterdam
P6 Investigations on the reactivity of N-Heterocyclic
Phosphenium Complexes of Chromium
Nicholas Birchall Univ. Stuttgart
P7 Reactivity of [Cp*Fe(η5-P5)] towards halogenating agents Helena Brake Univ. Regensburg
P8 CO-insertion into an endocyclic P-C bond of a
constrained tricyclic PC3 phosphine
Alexander Brand Univ. Münster
P9 The homometathesis and heterometathesis reactions of
tetra-aryldiphosphanes
Callum Branfoot Univ. Bristol
P10 TEMPO-substituted phosphane–iron(0) complexes:
precursors for phosphanoxyl complexes?
Philipp Brehm Univ. Bonn
P11 Variation on carbenes and pnictanes – a computational
study
Daniel Buzsaki Budapest Univ.
P12 A strong C2-symmetric BINOL derived phosphorus
Brønsted acid catalyst
Andy Caffyn Manchester Met. Univ.
P13 Coordination chemistry of a
1,1’-diphosphacobaltocenium salt
Duncan Carmichael Ecole Polytechnique
CNRS
P14 Novel diphosphine bioconjugate for nuclear imaging Ailis Chadwick Univ. Bristol
P15 Bonding and reactivity of phosphorus−antimony peri-
substituted acenaphthenes
Thomasine Curzon Univ. St Andrews
P16 Dismantling the hyperconjugation of π–conjugated
phosphorus heterocycles
Abel de Cózar Univ. the Basque
Country
P17 The sweeter side of SPECT imaging Rachel Doyle Univ. Bristol
P18 Reactivity of sodium phosphanide towards imines Doruk Ergöçmen Univ. Oxford
P19 Reactivity of the 2-phospha-ethynolate anion:
a pathway to phosphinecarboxamides
Erica Faria Univ. Oxford
P20 Stabilising Main Group complexes with auxiliary
phosphine groups
Joey Feld Univ. Oxford
P21 Synthesis and coordination chemistry of cyclo-
triphospirane derivatives with a [L-P3]-core derived from
a Ga2Cl4-bridged triphospha-allyl cation (L = NHC)
Julia Frötschel TU Dresden
P22 New way to run the Wittig Olefination Declan Gilheany Univ. College Dublin
P23 Synthesis and new reactions of 1,2σ3λ3-
oxaphosphetanes
Florian Gleim Univ. Bonn
P24 Reactions of imidazolio-phosphanides with organotin
halides
Florian Goerigk Univ. Stuttgart
11
P25 Coordination of phosphaalkynes to transition metals:
potential C-CP cleavage in mesitylphospha-acetylene
Tim Görlich Freie Univ. Berlin
P26 Substituting phosphorus – arsoles as air-stable
alternatives to phospholes
Joshua Green Uppsala Univ.
P27 Fluorophosphonium triflate salt catalysed synthesis of N-
sulfonyl formamidines
Chunxiang Guo Technische Univ.
Dresden
P28 Weak pnictogen bond with bismuth: experimental
evidence based on Bi-P through-space coupling
Dominikus Heift Durham Univ.
P29 Deprotonation and transmetalation of alkoxy substituted
phosphine boranes
Thomas Hettich Univ. Stuttgart
P30 Diphosphatetrahedranes - closing the gap in
phospha-alkyne oligomer chemistry
Gabriele Hierlmeier Univ. Regensburg
P31 Selective activation, functionalization and fragmentation
of white phosphorus by an α-diimine cobalt complex
Christian Hoidn Univ. Regensburg
P32 Frustrated radical pair formation Flip Holtrop Univ. Amsterdam
P33 A new biocompatible diphosphine-peptide chelator:
attaching peptides to 99mTc(V) for targeted SPECT
imaging of disease
Ingebjorg Hungnes King's College London
P34 Synthesis and properties of azophosphines Andrew Jupp Univ. Amsterdam
P35 Synthesising and characterisation of UV curable
phosphorus containing flame retardant polymer
Dilek Kacmaz Yildiz Technical Univ.
P36 Novel access to TTF-fused 1,4-dihydro-1,4-
diphosphinines
Shahriar
Kermanshahian
Univ. Bonn
P37 Towards optical tunable phospholes with functionalities Dieter Klintuch Univ. Kassel
P38 Synthesis and reactivity of a low-valent pyridyl-
diphenylphosphinine iron complex
Julia Leitl Univ. Regensburg
P39 Synthesis and reactivity of the first trans-alkyl cyaphide
complex
Madeleine Levis Univ. Sussex
P40 B(C6F5)3 enabled synthesis of a cyclic
cis-arsaphosphene
Meera Mehta Univ. Oxford
P41 The polymerization of C=P bond of 2-
phosphanaphthalenes
Yanbo Mei ETH Zürich
P42 On the aromaticity of the phosphabenzene –
triphosphabenzene series
Antal Mikehazi Budapest Univ.
P43 Going heavy on cyanates: PCS– and PCSe– Stefan Mitzinger Univ. Oxford
P44 Hetero-cyclopentane-1,3-diyls: modification of molecular
switches
Henrik Müller Univ. Rostock
P45 Tri(N-oleyl)phosphane stock-solution as alternative to
tris(trimethylsilyl)phosphane in the synthesis of narrow
size-distributed InP quantum dots
Michael Müller Technische Univ.
Dresden
P46 Nucleophilic attack @ phosphorus: single and twin
inversion
Kirill Nikitin Univ. College Dublin
P47 Syntheses and structures of new diphosphinoboranes Anna Ordyszewska Gdansk Univ. of
Technology
P48 Steric control in reactions of N-heterocyclic phosphorus
electrophiles with pentacarbonylmanganate(-I)
Marius Papendick Univ. Stuttgart
12
P49 Phosphametacyclophanes: from versatile ligands to
tuneable molecular electronics
Kyle Pearce Univ. Sussex
P50 Investigation of the reactivity of [Cp’’’Co(η4-P4)] Martin Piesch Univ. Regensburg
P51 Catalytic dehydropolymerisation of phosphine–boranes
as a route to structurally diverse materials
Diego Resendiz-Lara Univ. Bristol
P52 Post-functionalizations of diphosphahexaarene
derivatives
Carlos Romero-Nieto Univ. Heidelberg
P53 Synthesis of pyridinylidenamino phosphines: One-pot,
scalable access to electron-rich phosphines
Philipp Rotering Univ. Münster
P54 Preparation of a molecular carbon phosphide precursor Moritz Scharnhölz ETH Zürich
P55 Synthesis of synthetic antibacterial polymers and their
applications in bacteria biosensor
Naime Ceren Süer Yildiz Technical Univ.
P56 Experimental and theoretical aspects of Group 15
biradicals [E(µ-NBbp)]2 (E = P, As)
Lilian Sophie Szych Univ. Rostock
P57 The N-cube: a benchtop reactor system for clean and
safe amine alkylation
Edward Thornton Univ. Nottingham
P58 Study of precatalyst degradation leading to the discovery
of a new Ru0 precatalyst for hydrogenation and
dehydrogenation
Daniel Tindall Catalysis Research
Laboratory (CaRLa)
P59 The chemical behaviour of Al/P- and Ga/P-based FLPs
towards strained cyclic compounds
Marten Uebing Univ. Münster
P60 Palladium/black phosphorus nanohybrid: what surface
techniques tell us about the Pd-P interaction
Matteo Vanni CNR-ICCOM
P61 Resolution of P-stereogenic H-phosphinates and
secondary phosphine oxides with TADDOL-derivatives
Bence Varga Budapest Univ.
P62 Pnictaalkene decorated truxene: synthesis and
optoelectronics
Jordann Wells Uppsala Univ.
P63 Synthesis and reactivity of
tris(1,2,5-trimethylpyrrolyl)phosphine
Janina Werra Univ. Münster
P64 Exploring novel phosphonite chemistry and new
bioisosteres
Dean Wheeler Univ. Nottingham
P65 Pt(0)-catalysed hydrophosphination with a triphosphine
substrate
Sarah Williams Univ. Bristol
P66 Luminescent ruthenium-diphosphine complexes as anti-
cancer agents
Dan Wise Univ. Bristol
P67 Oxidation and coordination of peri-substituted
acenaphthenes with phosphorus-selenium functionalities
Lutao Zhang Univ. St Andrews
P68 Synthesis of 4-phosphoryl pyrazolones and their
application in metal recovery
Jianfeng Zhang Technische Univ.
Dresden
P69 Construction of alkyl-substituted pentaphosphido ligands
by P–P condensation
Christoph Ziegler Univ. Regensburg
P70 Tripodal N-centred phosphine ligands: towards a novel
donor set for 99mTc and 186/188Re radiopharmaceutical
formulation
Saul Cooper Imperial College
London
13
List of Delegates
Delegate Affiliation Email Address
Anne Abels ETH Zürich [email protected]
Vincent Annibale Univ. Bristol P1 [email protected]
Anna Arkhypchuk Uppsala Univ. P2 [email protected]
Peter Bagi Budapest Univ. [email protected]
Thomas Barber Univ. Nottingham O1 [email protected]
Saral Baweja Univ. Leipzig O33 [email protected]
David Becker Univ. Bonn P3 [email protected]
Rhydian Beddoe Univ. Nottingham P4 [email protected]
Steven Beijer Univ. Amsterdam P5 [email protected]
Zoltan Benko Budapest Univ. [email protected]
Sebastian Berthold Univ. Rostock [email protected]
Nicholas Birchall Univ. Stuttgart P6 [email protected]
Helena Brake Univ. Regensburg P7 [email protected]
Alexander Brand Univ. Münster P8 [email protected]
Callum Branfoot Univ. Bristol P9 [email protected]
Philipp Brehm Univ. Bonn P10 [email protected]
Jonas Bresien Univ. Rostock [email protected]
Claire Brodie Durham Univ. O3 [email protected]
Daniel Buzsaki Budapest Univ. P11 [email protected]
Jamie Cadge Univ. Bristol [email protected]
Andy Caffyn MMU, Manchester P12 [email protected]
Maria Caporali CNR-ICCOM [email protected]
Duncan Carmichael Ecole Polytechnique CNRS P13 [email protected]
Ailis Chadwick Univ. Bristol P14 [email protected]
Thomasine Curzon Univ. St Andrews P15 [email protected]
Abel de Cózar Univ. del Pais Vasco P16 [email protected]
Bas de Jong Univ. Amsterdam [email protected]
Fabian Dielmann Univ. Münster [email protected]
Nicolas D. D'Imperio Uppsala Univ. O4 [email protected]
Dustin Dittrich Univ. Münster [email protected]
Rachel Doyle Univ. Bristol P17 [email protected]
Natalia Dunal PCC Rokita [email protected]
Jade Dussart Univ. Paris 13 O6 [email protected]
Luis Dütsch Univ. Regensburg O5 [email protected]
Phil Dyer Durham Univ. [email protected]
Tobias Eder Univ. Münster O11 [email protected]
Andreas Ehlers Univ. Amsterdam [email protected]
Doruk Ergöçmen Univ. Oxford P18 [email protected]
Erica Faria Univ. Oxford P19 [email protected]
Julie Febvay ICSN-CNRS O12 [email protected]
Christoph Feil Univ. Stuttgart O14 [email protected]
Joey Feld Univ. Oxford P20 [email protected]
Julia Frötschel TU Dresden P21 [email protected]
Derek Gates Univ. British Columbia [email protected]
Anna Gerdova Magritek UK [email protected]
Declan Gilheany Univ. College Dublin P22 [email protected]
Florian Gleim Univ. Bonn P23 [email protected]
Dietmar Glindemann Glindemann Polymer Tech. [email protected]
Marion Glindemann Glindemann Polymer Tech. [email protected]
Florian Goerigk Univ. Stuttgart P24 [email protected]
Jose Goicoechea Univ. Oxford [email protected]
Tim Görlich Freie Univ. Berlin P25 [email protected]
Joshua Green Uppsala Univ. P26 [email protected]
Hansjörg Grützmacher ETH Zurich IndP [email protected]
Chunxiang Guo TU Dresden P27 [email protected]
Zeyu Han Univ. British Columbia O16 [email protected]
Jan-Gerd Hansel LANXESS IndP [email protected]
Dominikus Heift Durham Univ. P28 [email protected]
Thomas Hettich Univ. Stuttgart P29 [email protected]
Gabriele Hierlmeier Univ. Regensburg P30 [email protected]
Lee Higham Newcastle Univ. [email protected]
Muriel Hissler CNRS-Univ. Rennes [email protected]
Luong P. Ho TU Braunschweig O20 [email protected]
Christian Hoidn Univ. Regensburg P31 [email protected]
Flip Holtrop Univ. Amsterdam O18 P32 [email protected]
Yuya Hu LIKAT Leibniz O22 [email protected]
Ingebjorg Hungnes King's College London P33 [email protected]
Iñigo Iglesias CNR-ICCOM O24 [email protected]
Sheena Jackson Solvay [email protected]
Andrew Jupp Univ. Amsterdam P34 [email protected]
Dilek Kacmaz Yildiz Technical Univ. P35 [email protected]
Paul Kamer LIKAT Rostock [email protected]
Mary Kedward Strem Chemicals UK [email protected]
Zsolt Kelemen Univ. Barcelona [email protected]
Shahriar Kermanshahian Univ. Bonn P36 [email protected]
Petr Kilian Univ. St Andrews [email protected]
Ashley King Univ. Bristol [email protected]
Dieter Klintuch Univ. Kassel P37 [email protected]
Robert Konrath Univ. St Andrews O13 [email protected]
Anas Lahlou OCP Group [email protected]
Hortense Lauwick CNRS-Univ. Rennes O26 [email protected]
Bethany Lawson Univ. St Andrews O27 [email protected]
Grégoire Le Corre ETH Zürich O28 [email protected]
Marc Lecouvey Univ. Paris 13 [email protected]
Julia Leitl Univ. Regensburg P38 [email protected]
Ulrich Lennert Univ. Regensburg O29 [email protected]
Madeleine Levis Univ. Sussex P39 [email protected]
Angela Marinetti CNRS [email protected]
Nigel Matthews Strem Chemicals UK [email protected]
Meera Mehta Univ. Oxford P40 [email protected]
Yanbo Mei ETH Zürich P41 [email protected]
Maximilian Menche Catalysis Research Lab. O30 [email protected]
Antal Mikehazi Budapest Univ. P42 [email protected]
Lexy Miles-Hobbs Univ. Bristol O8 [email protected]
Stefan Mitzinger Univ. Oxford P43 [email protected]
Reka Mokrai Budapest Univ. O7 [email protected]
Christian Mueller FU Berlin [email protected]
Henrik Müller Univ. Rostock P44 [email protected]
Michael Müller TU Dresden P45 [email protected]
Kirill Nikitin UCD Dublin P46 [email protected]
Nick Norman Univ. Bristol [email protected]
Laszlo Nyulaszi Budapest Univ. [email protected]
Anna Ordyszewska Gdansk Univ. P47 [email protected]
Andreas Orthaber Uppsala Univ. [email protected]
Darren Ould Cardiff Univ. O32 [email protected]
Marius Papendick Univ. Stuttgart P48 [email protected]
Kyle Pearce Univ. Sussex P49 [email protected]
Maurizio Peruzzini CNR-ICCOM [email protected]
Martin Piesch Univ. Regensburg P50 [email protected]
Rudolf Pietschnig Univ. Kassel [email protected]
Paul Pringle Univ. Bristol [email protected]
Diego Resendiz-Lara Univ. Bristol P51 [email protected]
Fabian Roesler Univ. Kassel O31 [email protected]
Carlos Romero-Nieto Univ. Heidelberg P52 [email protected]
Philipp Rotering Univ. Münster P53 [email protected]
Chris Russell Univ. Bristol [email protected]
Anna C. Sale Evonik Industries [email protected]
Moritz Scharnhölz ETH Zürich P54 [email protected]
Thomas Schaub BASF SE IndP [email protected]
Willem Schipper WS Consulting IndP [email protected]
Alexander Schmer Univ. Bonn O25 [email protected]
Axel Schulz Univ. Rostock [email protected]
Daniel Scott Univ. Regensburg [email protected]
Samuel Scott Univ. Bristol [email protected]
Alexandra Slawin Univ. St Andrews [email protected]
J. Chris Slootweg Univ. Amsterdam [email protected]
Reinhard Sommerlade Process Design Chemist IndP [email protected]
N. Ceren Süer Yildiz Technical Univ. P55 [email protected]
Tim Suhrbier Univ. Rostock O23 [email protected]
Agnieszka Swist PCC Rokita [email protected]
Lilian S. Szych Univ. Rostock P56 [email protected]
Natalia Szynkiewicz Gdansk Univ. O21 [email protected]
Clemens Taube TU Dresden O19 [email protected]
Jonas C. Tendyck Univ. Münster O17 [email protected]
Edward Thornton Univ. Nottingham P57 [email protected]
Daniel J. Tindall Catalysis Research Lab. P58 [email protected]
Nóra Tóth Budapest Univ. O15 [email protected]
Oliver Townrow Univ. Oxford [email protected]
Marten Uebing WWU Münster P59 [email protected]
Werner Uhl Univ. Münster [email protected]
Steven van Zutphen Italmatch Chemicals IndP [email protected]
Matteo Vanni CNR-ICCOM P60 [email protected]
Bence Varga Budapest Univ. P61 [email protected]
Norbert Weferling WefConsult [email protected]
Gernot Weinberger TU Graz O10 [email protected]
Jordann Wells Uppsala Univ. P62 [email protected]
Janina A. Werra Univ. Münster P63 [email protected]
Dean Wheeler Univ. Nottingham P64 [email protected]
Sarah Williams Univ. Bristol P65 [email protected]
Daniel Wilson Univ. Oxford O9 [email protected]
Dan Wise Univ. Bristol P66 [email protected]
Robert Wolf Univ. Regensburg [email protected]
Gary Woodward Solvay IndP [email protected]
Derek Woollins Univ. St Andrews [email protected]
Friedrich Wossidlo FU Berlin O2 [email protected]
Lutao Zhang Univ. St Andrews P67 [email protected]
Jianfeng Zhang TU Dresden P68 [email protected]
Christoph Ziegler Univ. Regensburg P69 [email protected]
Saul Cooper Imperial College London P70 [email protected]
Chris Harris Solvay IndP [email protected]
16
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PTFE (“TEFLON”) Sealing Ring for hermetic greaseless Glass Joints
Glindemann D.1,*
1 Glindemann Polymer Technologies,
Goettinger Bogen 15, 06126 Halle, Germany *[email protected]
There is a prejudice that PTFE (often called “Teflon”) is too inelastic to be a hermetic sealant for greaseless conical joints. Therefore, teaching books recommend threaded or flanged “O-ring joints” for hermetic manipulation of air- and moisture sensitive chemicals if joint grease is no option. Here we show (Figure 1) that the common ground conical glass joint can be sealed relatively hermetic and at low cost with a narrow flat PTFE sealing ring (less than 1 mm wide and 0.1 mm thick, weight only 5 mg PTFE). The sealing ring is high-vacuum tight (air leakage rate 10-8… 10-6 mBar*Liter/sec), solvent tight (loss of ethyl acetate out of containers < 0.1 mg/day) and resistant to fluctuation of temperature (freezing-thawing-heating cycles). The reusable PTFE sealing ring prevents stuck joints, is thin enough to be used with all joint clamps and is fixed elastically (without groove) on the glass joint. We demonstrate also a new all-glass-syringe ((Figure 1, 1 - 100 mL) that is gastight at fluctuating temperatures (freezing-thawing-cycles) by a similar exchangeable sealing ring (PTFE) in a groove of the glass piston.
Fig.1. Left: PTFE-sealing ring fixed elastic (no groove necessary). Middle: Sealing ring intransparent without pressure. Right: Sealing ring transparent under sealing pressure. Far right: A similar PTFE ring and a piston groove
make an all-glass-syringe gastight.
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SoC
SSGB
Park Street
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European Workshops on Phosphorus Chemistry
1 2004 Kaiserslautern Deutschland
2 2005 Bonn Deutschland
3 2006 Leipzig Deutschland
4 2007 Zandvoort Nederland
5 2008 Regensburg Deutschland
6 2009 Firenze Italia
7 2010 Budapest Magyarország
8 2011 Münster Deutschland
9 2012 Rennes France
10 2013 Regensburg Deutschland
11 2014 Со́фия България
12 2015 Kassel Deutschland
13 2016 Berlin Deutschland
14 2017 Cluj-Napoca România
15 2018 Uppsala Sverige
16 2019 Bristol United Kingdom