Oxidative Ring Contraction of Cyclobutenes: General Approach to Cyclopropylketones including Mechanistic Insights
作者:Andreas N. Baumann、Franziska Schüppel、Michael Eisold、Andrea Kreppel、Regina de Vivie-Riedle、Dorian Didier
DOI:10.1021/acs.joc.8b00297
日期:2018.5.4
cyclopropylketones (CPKs) under atmospheric conditions is reported. Comprehensive mechanistic studies are proposed to support this novel, yet unusual, rearrangement. Insights into the mechanism ultimately led to simplification and generalization of the ring contraction of cyclobutenes using mCPBA as an oxidant. This unique and functional group tolerant transformation proceeds under mild conditions at room temperature
报道了在大气条件下易于形成环丙基酮(CPK)的易获得的环丁烯衍生物的原始氧化环收缩。建议进行全面的机械研究以支持这种新颖但又不寻常的重排。对该机理的见解最终导致使用m简化和泛化环丁烯的环收缩CPBA作为氧化剂。这种独特且具有官能团耐受性的转化是在室温下于温和条件下进行的,从而提供了一个新的多官能基序文库。由于CPK是吸引人的和特权的药效团,这种简单明了的策略的阐述代表了用于药物发现和药物化学的极有价值的工具。另外,所描述的方法被用于以最少的步骤生成生物活性物质和关键前体的库。