作者:Fraser F. Fleming、Lee A. Funk、Ramazan Altundas、Vaqar Sharief
DOI:10.1021/jo026396+
日期:2002.12.1
tert-butoxide triggers the chemoselective cyclization between nitrile anions and remote, enolizable carbonyl groups, despite the acidity difference favoring enolate formation and addition to the nitrile group. Domino deprotonation, cyclization, and dehydration efficiently transform a diverse array of omega-oxonitriles into carbocyclic and heterocyclic five- and six-membered alkenenitriles in a single synthetic
尽管酸度差异有利于烯醇化物的形成和添加到腈基上,但是叔丁醇钾触发了腈阴离子与远端可烯醇化羰基之间的化学选择性环化。多米诺骨牌的去质子化,环化和脱水可在一次合成操作中有效地将多种ω-恶腈转化为碳环和杂环五元和六元烯腈。