Alternative strategies for the stereoselective synthesis of enantioenriched 6-arylated piperidin-2-ones
摘要:
Two alternative synthetic approaches to a variety of enantioenriched 6-arylated piperidin-2-ones have been developed. The first one is based on the hydrogenation of suitably arylated chiral cyclic enehydrazides. The second approach relies on the asymmetric catalytic hydrogenation of the corresponding N-alkylated precursors. (C) 2012 Elsevier Ltd. All rights reserved.
A procedure‐economical synthesis of 2,6‐trans‐substituted piperidinealkaloids is described. The method consists of Ir and Cu catalyzed reductive alkynylation of N‐benzyllactams and tandem catalytic hydrogenation‐hydrogenolysis.
Two alternative synthetic approaches to a variety of enantioenriched 6-arylated piperidin-2-ones have been developed. The first one is based on the hydrogenation of suitably arylated chiral cyclic enehydrazides. The second approach relies on the asymmetric catalytic hydrogenation of the corresponding N-alkylated precursors. (C) 2012 Elsevier Ltd. All rights reserved.