Enantioselective vinylogous aldol reaction between β,γ-unsaturated amides and isatins

A catalytic asymmetric vinylogous aldol reaction between β,γ-unsaturated amides and isatins has been developed. In the presence of 10 mol% of tertiary amine-thiourea C7, the vinylogous reaction has been achieved in up to 98% yield and up to 99% ee (26 examples). This methodology provides an efficient approach to construct chiral multifunctional 3-hydroxy-2-oxindole. Moreover, the transformations of the chiral products, including the esterification of amides, the hydrogenation of C-C double bond and further conversion to spirolactones, have been investigated.

You have access to this article

Please wait while we load your content... Something went wrong. Try again?

留言 (0)

沒有登入
gif