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Synfacts 2010(9): 1025-1025  
DOI: 10.1055/s-0030-1257943
Metal-Catalyzed Asymmetric Synthesis and Stereoselective Reactions
© Georg Thieme Verlag Stuttgart ˙ New York

Catalytic Asymmetric Conjugate Addition of Thioglycolate to Chalcones

Contributor(s): Hisashi Yamamoto, Kimberly Griffin
Y. Hui, J. Jiang, W. Wang, W. Chen, Y. Cai, L. Lin, X. Liu, X. Feng*
Sichuan University, Chengdu, P. R. of China
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Publikationsdatum:
23. August 2010 (online)

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Significance

A chiral N,N′-dioxide/La(OTf)3 ­complex catalyzes the sulfa-Michael reaction of thioglycolate and chalcones. The reaction is particularly intriguing due to the asymmetric amplification of the reaction: excellent enantioselectivity is observed using only 2% ee of the ligand.