Construction of <i>gem</i>-Difluoroenol Esters through Catalytic <i>O</i>-Selective Addition of Difluoroenoxysilanes to Ketenes
作者:Yang Shi、Bo-Wen Pan、Jun-Xiong He、Ying Zhou、Jian Zhou、Jin-Sheng Yu
DOI:10.1021/acs.joc.1c00570
日期:2021.6.4
difluoroenoxysilanes is disclosed for the first time, which enabled the direct construction of versatile gem-difluoroalkenes through an unprecedented highly efficient addition reaction with ketenes. A series of valuable gem-difluoroenol esters were achieved in good to excellent yields. The synthetic versatility of this protocol is further demonstrated by the gram-scale synthesis and good functional group tolerance
首次公开了二氟烯氧基硅烷的O位反应性,通过前所未有的与烯酮的高效加成反应,可以直接构建多功能的偕二氟烯烃。以良好到极好的收率获得了一系列有价值的偕二氟烯醇酯。克级合成和良好的官能团耐受性进一步证明了该协议的合成多功能性。