Raney-Co Mediated Reductive Cyclization of an α,β-Unsaturated Nitrile
作者:Jacob M. Janey、Charles J. Orella、Eugenia Njolito、Jenny M. Baxter、Jonathan D. Rosen、Michael Palucki、Rick R. Sidler、Wenjie Li、Jason J. Kowal、Ian W. Davies
DOI:10.1021/jo8000996
日期:2008.4.1
An expedient, five step synthesis of caprolactam 1 is reported starting from natural L-homoserine. The key step is a chemoselective reductivecyclization of α,β-unsaturated nitrile 10 mediated by Raney-Co type metals. This hydrogenation is extensively investigated in order to account for the observed product distribution and yields.