Reactive Intermediates from DMDO Oxidation of Ynamides. Trapping of a de novo Chiral Push−Pull Carbene via Cyclopropanation
作者:Ziyad F. Al-Rashid、Richard P. Hsung
DOI:10.1021/ol703083k
日期:2008.2.1
The reaction profile of DMDO oxidations of ynamides is described. This work illustrates the first examples of highly diastereoselective intramolecular cyclopropanations of a push-pull carbene derived from alkyne oxidation. In addition, the ynamide oxidation provides facile access to ketoimides and reveals mechanistic insights into the chemistry of electronically biased oxirenes.
描述了乙酰胺的
DMDO氧化反应的反应过程。这项工作说明了从
炔烃氧化衍生的推挽卡宾的高非对映选择性分子内
环丙烷化的第一个例子。此外,乙酰胺氧化提供了对酮
酰亚胺的便捷通道,并揭示了对电子偏压的氧杂
环丁烷化学反应的机械学见解。