Chromium-Catalyzed Selective Borylation of Vinyl Triflates and Unactivated Aryl Carboxylic Esters with Pinacolborane
作者:Li Gong、Chao Li、Fangyan Yuan、Senlin Liu、Xiaoming Zeng
DOI:10.1021/acs.orglett.2c01015
日期:2022.5.6
catalysis via the selective formation of vinyl and aryl boronate esters. The competing hydrided reduction or allylic borylation proceeds sluggishly or does not occur, therefore providing a selective strategy for the incorporation of boronate into olefins and arenes. Mechanistic studies indicate that the σ-bond metathesis or oxidative addition mechanism may be considered to be responsible for the cleavage
使用频哪醇硼烷对丰富的乙烯基三氟甲磺酸酯和未活化的芳基羧酸酯进行硼酸化是通过铬催化选择性形成乙烯基和芳基硼酸酯实现的。竞争性氢化还原或烯丙基硼化反应缓慢或不发生,因此为将硼酸盐结合到烯烃和芳烃中提供了一种选择性策略。机理研究表明,σ键复分解或氧化加成机制可能被认为是酯支架断裂的原因。