Volume 62, Issue 21 e202301126
Communication

Bifunctional NHC-Catalyzed Remote Enantioselective Mannich-type Reaction of 5-(Chloromethyl)furfural via Trienolate Intermediates

Dr. Yuan-Yuan Gao

Dr. Yuan-Yuan Gao

Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, 476000 China

These authors contributed equally to this work.

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Dr. Chun-Lin Zhang

Dr. Chun-Lin Zhang

Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

These authors contributed equally to this work.

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Ming-Lei Jin

Ming-Lei Jin

Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Dr. Zhong-Hua Gao

Corresponding Author

Dr. Zhong-Hua Gao

Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Prof. Dr. Song Ye

Corresponding Author

Prof. Dr. Song Ye

Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Dedicated to Professor Li-Xin Dai on the occasion of his 100th birthday.
First published: 24 March 2023
Citations: 2

Graphical Abstract

NHC-catalyzed enantioselective Mannich-type reactions of 5-(chloromethyl)furfural (CMF), an important biomass-derived platform chemical, with aldimines afford chiral amines in good yields with excellent regio- and enantioselectivities. The use of a bifunctional NHC bearing a free hydroxy group enabled the remote addition of the trienolate intermediate to the imine to occur in a highly stereocontrolled manner.

Abstract

N-heterocyclic carbene (NHC)-catalyzed enantioselective Mannich-type reactions of the biomass-derived platform compound 5-(chloromethyl)furfural (CMF) with imines were developed. A series of high-value-added chiral amines were afforded in good to high yields with excellent regio- and enantioselectivities. The bifunctional NHC derived from ʟ-pyroglutamic acid efficiently steered the remote addition of the trienolate intermediate to the imine in a highly stereocontrolled manner. This represents the first enantioselective reaction proceeding via an NHC-bound trienolate intermediate.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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