Yaomin Wang, Shuai Zhao, Qi‐Yan Xue
Aug 10, 2018
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Journal
Synthetic Communications
Abstract
Abstract The asymmetric benzylation of methyl 4-oxo-3-piperidinecarboxylate has been investigated, and methyl (R)-1,3-dibenzyl-4-oxopiperidine-3-carboxylate (3c) was obtained by using a phase-transfer catalyst O-allyl-N-9-anthracenemethyl-cindexnine bromide (1k). This synthetic method has the advantages of cheap materials, mild reaction conditions and moderate enantioselectivity, and is useful for preparation of biologically active compounds containing a chiral 3-benzylpiperidine backbone. Graphical Abstract