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Your search keyword '"Zhu, Tingshun"' showing total 5 results
Start Over Author "Zhu, Tingshun" Journal organic letters
5 results on '"Zhu, Tingshun"'

3. Carbene and Acid Cooperative Catalytic Reactions of Aldehydes and o-Hydroxybenzhydryl Amines for Highly Enantioselective Access to Dihydrocoumarins

Author

Chen, Xingkuan, Song, Runjiang, Liu, Yingguo, Ooi, Chong Yih, Jin, Zhichao, Zhu, Tingshun, Wang, Hongling, Hao, Lin, and Chi, Yonggui Robin

Abstract

A highly enantioselective method for quick access to dihydrocoumarins is reported. The reaction involves a cooperative catalytic process with carbene and in situ generated Brønsted acid as the catalysts. α-Chloro aldehyde and readily available and stable o-hydroxybenzhydryl amine substrates were used to generate reactive azolium ester enolate and ortho-quinone methide (o-QM) intermediates, respectively, to form dihydrocoumarins with exceptionally high diastereo- and enantioselectivities. The catalytic reaction products can be easily transformed to valuable pharmaceuticals and bioactive molecules.

Published
2024
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