Synthesis of Ketones and Esters from Heteroatom-Functionalized Alkenes by Cobalt-Mediated Hydrogen Atom Transfer
作者:Xiaoshen Ma、Seth B. Herzon
DOI:10.1021/acs.joc.6b01709
日期:2016.10.7
Cobalt bis(acetylacetonate) is shown to mediate hydrogen atom transfer to a broad range of functionalized alkenes; in situ oxidation of the resulting alkylradical intermediates, followed by hydrolysis, provides expedient access to ketones and esters. By modification of the alcohol solvent, different alkyl ester products may be obtained. The method is compatible with a number of functional groups including
已显示双(乙酰丙酮酸)钴介导氢原子转移到各种官能化烯烃中。所得烷基自由基中间体的原位氧化,然后水解,可方便地获得酮和酯。通过改性醇溶剂,可以获得不同的烷基酯产物。该方法与许多官能团兼容,包括链烯基卤化物,硫化物,三氟甲磺酸酯和膦酸酯,为乙烯基硅烷的Tamao-Fleming氧化和Arndt-Eistert同系物提供了温和而实用的替代方法。