N-Heterocyclic Carbene-Catalyzed Conjugate Umpolung for the Synthesis of γ-Butyrolactones
作者:Frank Glorius、Christian Burstein、Serena Tschan、Xiulan Xie
DOI:10.1055/s-2006-942447
日期:——
The N-heterocyclic carbene-catalyzed conjugate Umpolung of differently substituted α,β-unsaturated aldehydes, e. g. cinnamaldehydes, a-methylcinnamaldehydes, and crotonaldehydes, is described. Coupling of these compounds with a variety of electrophilic aldehydes and ketones results in the selective formation of highly substituted β- and γ-butyrolactones.
描述了不同取代的α,β-不饱和醛,例如肉桂醛、α-甲基肉桂醛和巴豆醛的N-杂环卡宾催化的共轭Umpolung。这些化合物与各种亲电子醛和酮的偶联导致选择性形成高度取代的β-和γ-丁内酯。