By using N-acyliminium ion chemistry, several omega -propadienyllactams and a propadienyloxazolidine were prepared from N-acyliminium ion precursors and propargylsilanes. Treatment of these allene containing lactams and oxazolidinone with allyl halides or an allyl carbonate using Pd(II)-salts as the catalyst gave rise to a coupling-cyclization reaction, yielding bicyclic systems in which the allyl moiety is incorporated. With this methodology several substituted pyrrolizinones, an oxazolone and indolizinone were prepared. (C) 2001 Elsevier Science Ltd. All rights reserved.
US4668703A
申请人:——
公开号:US4668703A
公开(公告)日:1987-05-26
Allenic amino acids. 1. Synthesis of .gamma.-allenic GABA by a novel aza-Cope rearrangement
作者:Arlindo L. Castelhano、Allen Krantz
DOI:10.1021/ja00318a076
日期:1984.3
Synthese de l'acide amino-4 heptadiene-5,6oique (inhibiteur de la GABA transaminase) a partir de la condensation du succinimide avec le pentyne-4 ol-2
Synthese de l'acideamino-4 heptadiene-5,6oique (inhibiteur de la GABA transaminase) a partir de la condensed du succinimide avec le pentyne-4 ol-2