Divergent Synthesis of Fluoroalkyl Ketones through Controlling the Reactivity of Organoboronate Complexes
作者:Gang Zhou、Zhuanzhuan Guo、Shanshan Liu、Xiao Shen
DOI:10.1021/jacs.3c12150
日期:2024.2.14
silyl ethers as intermediates that react with various electrophiles to generate defluorinated ketones as the products. Moreover, in combination with peroxide, a 1,2-shift of fluoroalkyl group is favored over deboronative fluoride elimination to generate ketal intermediates, leading to the formation of ketones as the products. This transition-metal-free reaction is operationally simple, and aryl, alkenyl
在此,我们报道了通过容易获得的有机硼酸酯和氟烷基酰基硅烷之间的可见光诱导反应来合成氟烷基酮。对原位生成的有机硼酸盐配合物的反应性进行选择性控制是实现不同转化的关键。在碱性条件下,有机硼酸酯配合物经历脱硼氟化物消除,导致形成烯醇甲硅烷基醚作为中间体,其与各种亲电试剂反应生成脱氟酮作为产物。此外,与过氧化物结合,氟烷基的1,2-位移比脱硼氟化物消除更有利于生成缩酮中间体,从而形成酮作为产物。这种无过渡金属的反应操作简单,芳基、烯基和烷基硼酸酯都是合适的底物。克级反应和生物活性分子(包括齐氟硅氧烷及其氟烷基类似物)的简便合成已经证明了其合成潜力。