L. Bin
2013
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Journal
Chinese Journal of Synthetic Chemistry
Abstract
1-( S-1-benzyl)-6-ethoxycarbonyl-4-methyl-3,4-didehydropiperidine( 3) in yield of 58. 7%was prepared by one-pot from( S)-1-phenylethylamine. Ethyl 4-methyl-2-piperidinecarboxylate( 4)in yield 96% was synthesized by catalytic hydrogenation debenzylation of 3 using 10% Pd / C as the catalyst.( 2R,4S)-4 with 95% content was obtained by vacuum distillation of 4. The structures were confirmed by1H NMR,IR and MS.