Mild Ring Contractions of Cyclobutanols to Cyclopropyl Ketones via Hypervalent Iodine Oxidation
作者:Yan Sun、Xin Huang、Xiaojin Li、Fan Luo、Lei Zhang、Mengyuan Chen、Shiya Zheng、Bo Peng
DOI:10.1002/adsc.201701237
日期:2018.3.20
An iodine‐mediated oxidative ring contraction of cyclobutanols has been developed. The reaction allows the synthesis of a wide range of aryl cyclopropyl ketones under mild and eco‐friendly conditions. A variety of functional groups including aromatic or alkyl halides, ethers, esters, ketones, alkenes, and even aldehydes are nicely tolerated in the reaction. This is in contrast with traditional synthetic
已经开发出碘介导的环丁醇的氧化环收缩。该反应可以在温和且环保的条件下合成各种芳基环丙基酮。反应中可以很好地耐受各种官能团,包括芳族或烷基卤化物,醚,酯,酮,烯烃,甚至醛。这与传统的合成方法相反,在传统的合成方法中,官能团的耐受性通常很差。碘氧化系统的可调性也突出了该方法的实用性。具体而言,将碘(III)试剂与适当的碱结合使用可使反应适应一系列富挑战性的富电子芳烃底物。在此也显示了该反应的简便可扩展性。