Regiocontrolled synthesis of 2,4,6-triarylpyridines from methyl ketones, electron-deficient acetylenes and ammonium acetate
作者:Dmitrii A. Shabalin、Marina Yu. Dvorko、Elena Yu. Schmidt、Boris A. Trofimov
DOI:10.1039/d1ob00193k
日期:——
A novel one-pot two-step approach for the synthesis of 2,4,6-triarylpyridines via t-BuOK/DMSO-promoted C-vinylation of a variety of methyl ketones with electron-deficient acetylenes (alkynones) followed by a cyclization of the in situ generated unsaturated 1,5-dicarbonyl species with ammonium acetate has been developed. This approach possesses competitive advantages such as high regioselectivity, available
一种新颖的一锅两步方法,通过t -BuOK / DMSO促进的多种甲基酮的C-乙烯基与电子缺陷型乙炔(炔烃)的合成,然后环化环戊二烯,合成2,4,6-三芳基吡啶在原位用乙酸铵生成的不饱和的1,5-二羰基物种已经研制成功。该方法具有竞争优势,例如区域选择性高,可用的起始原料以及不存在过渡金属催化剂,氧化剂和不良副产物。三取代,四取代和稠合吡啶的合成证明了该开发方法的广泛合成效用。