Synthesis 2018; 50(13): 2577-2586
DOI: 10.1055/s-0036-1591987
paper
© Georg Thieme Verlag Stuttgart · New York

Highly Enantioselective Michael Addition of Dithiomalonates to Nitroolefins Catalyzed by New Bifunctional Chiral Thioureas

Jia-Ni Yuan
Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle Western Road, Xi’an Shanxi 710032, P. R. of China   eMail: weihechem@fmmu.edu.cn
,
Hui-Xia Liu
Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle Western Road, Xi’an Shanxi 710032, P. R. of China   eMail: weihechem@fmmu.edu.cn
,
Qin-Qin Tian
Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle Western Road, Xi’an Shanxi 710032, P. R. of China   eMail: weihechem@fmmu.edu.cn
,
Nan Ji
Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle Western Road, Xi’an Shanxi 710032, P. R. of China   eMail: weihechem@fmmu.edu.cn
,
Kuo Shen
Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle Western Road, Xi’an Shanxi 710032, P. R. of China   eMail: weihechem@fmmu.edu.cn
,
Wei He*
Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, 169 Changle Western Road, Xi’an Shanxi 710032, P. R. of China   eMail: weihechem@fmmu.edu.cn
› Institutsangaben
Financial support from the National Major Scientific and Technological Special Project for ‘Significant New Drugs Development’ (No. 2014ZX09J14104-06C) and the Young Scholar Foundation of the Fourth Military Medical University are gratefully acknowledged.
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Publikationsverlauf

Received: 17. Januar 2018

Accepted after revision: 17. März 2018

Publikationsdatum:
24. April 2018 (online)


Jia-Ni Yuan and Hui-Xia Liu contributed equally.

Abstract

We report a highly efficient asymmetric Michael addition of dithiomalonates to trans-β-nitroolefins catalyzed by versatile cinchona-based bifunctional thioureas, which provides the corresponding adducts in high yields (up to 92%) and with excellent enantioselectivities (up to 99% ee) under mild conditions. Replacement of the catalyst with its pseudo-enantiomer gives the Michael adducts with opposite configuration in similar yields and enantioselectivities.

Supporting Information