directed c-h activation of alkanes · directed c-h activation of alkanes work group of prof. tanja...
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Directed C-H Activation of Alkanes
Work Group of Prof. Tanja Gaich
Konstantin Samarin
22.06.2016
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Relevance of the Topic
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2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Reviews about C-H activation
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Short historical perspective
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Shilov Chemistry
Alexander E. Shilov
Shilov process:
Proposed mechanism:
Shilov A.E., et al. Zhurnal Fizicheskoi Khimii 1972, 46, 1353;
Labinger J. A., Bercaw J. E. Nature 2002, 417, 507.
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First Useful Methods
Shaw B.L., et al. J. Chem. Soc., Chem. Commun. 1978, 1061;
Baldwin J.E., et al. Tetrahedron 1985, 41, 699;
Kao L.C. Sen A. J. Chem. Soc., Chem. Comm. 1991, 1242.
Jack Baldwin
Ayusman Sen
1,3-Oxime directed
1,4-Carboxylic acid directed
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Modern Pd-catalyzed C-H Activation
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Modern Pd-catalyzed C-H Activation
Scope:
Principal scheme:
Dong G., et al. J. Am. Chem. Soc. 2012, 134, 16991; Dong G., et al. J. Am. Chem. Soc. 2015, 137, 11586;
See also Dong G., et al. Nature Chemistry 2015, 7, 829; Gaunt M.J., et al. Nature Chemistry 2015, 7, 1009.
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Modern Pd-catalyzed C-H Activation
Gaunt M.J., et al. Nature 2014, 510, 129.
See also He C., Gaunt M.J. Angew.Chem. Int. Ed. 2015, 54, 15840. (the same methodologyyfor C-H arylation)
Principal
scheme:
Scope:
Carbonylation
Modification:
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Modern Pd-catalyzed C-H Activation
Yu J.-Q., et al. Science 2016, 351, 252.
Scope:
Principal
scheme:
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Modern Pd-catalyzed C-H Activation
Shabashov D., Daugulis O. J. Am. Chem. Soc. 2010, 132, 3965;
Liu C.-F., et al. Org. Lett. 2015, 17, 6094.
Coupling with alkyl iodides
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Modern Pd-catalyzed C-H Activation
Hoshiya H., et al. Org. Lett. 2016, 18, 48.
Coupling with alkyl iodides
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Ir-catalyzed C-H Activation
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Silicon-Directed Iridium C-H Activation
C-H activation at CH3:
Scope:
Simmons E.M., Hartwig J.F. Nature 2012, 483, 70;
Hartwig J.F., et al. J. Am. Chem. Soc. 2014, 136, 6586.
C-H activation at CH2:
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Silicon-Directed Iridium C-H Activation
Borylation scheme:
Hartwig J.F., et al. J. Am. Chem. Soc. 2016, 138, 762.
Scope:
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Scope:
Principal scheme:
Chang S., et al. J. Am. Chem. Soc. 2014, 136, 4141.
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Cu-catalyzed C-H Activation
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Hydroxylation of Nonactivated CH2-Groups with Copper Complexes
Schönecker methodology:
Application in total synthesis of Cyclopamine:
Schönecker B., et al. Angew. Chem., Int. Ed. 2003, 42, 3240;
Giannis A., et al. Angew. Chem. Int. Ed. 2009, 48, 7911.
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Hydroxylation of Nonactivated CH2-Groups with Copper Complexes
Baran optimized protocol and proposed mechanism:
Baran P.S., et al. J. Am. Chem. Soc. 2015, 137, 13776.
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Hydroxylation of Nonactivated CH2-Groups with Copper Complexes
Baran P.S., et al. J. Am. Chem. Soc. 2015, 137, 13776.
Application in total synthesis:
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Remarkable Applications in Total Synthesis
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Total Synthesis of the Rhazinilam
Johnson J.A., Sames D. J. Am. Chem. Soc. 2000, 122, 6321.
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Synthesis of teleodicin B-4 core
Sames D., et al. J. Am. Chem. Soc. 2002, 124, 11856.
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Total Synthesis of Celogentin C
Feng Y., Chen G. Angew. Chem., Int. Ed. 2010, 49, 958.
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Total Synthesis of piperaborenine B
Gutekunst W.R., Baran P.S. J. Am. Chem. Soc. 2011, 133 , 19076.
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Some Recent Examples
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Thank You For Your Attention