Vinyl selenones: annulation agents for the synthesis of six-membered benzo-1,4-heterocyclic compounds
作者:Luana Bagnoli、Sara Casini、Francesca Marini、Claudio Santi、Lorenzo Testaferri
DOI:10.1016/j.tet.2012.11.036
日期:2013.1
cascade of benzo 1,2-diols, 1,2-thiols and 2-(benzylamino)phenols with stable and easily available vinyl selenones affords differently substituted 2,3-dihydro-1,4-benzodioxines, benzodithiines and 3,4-dihydro-2H-1,4-benzoxazines in good yields. The same procedure has been extended to the synthesis of 1,2,3,4-tetrahydroquinoxalines. All of these heterocycles are present in a variety of biologically active
描述了一种新颖且通用的六元双环苯并稠合的1,4-杂环的方法。苯并1,2-二醇,1,2-硫醇和2-(苄氨基)苯酚与稳定且易于获得的乙烯基硒酮的加成环合级联反应提供了不同取代的2,3-二氢-1,4-苯并二恶英,苯并二噻吩和3 ,4-二氢-2 H -1,4-苯并恶嗪的收率很高。相同的程序已扩展到1,2,3,4-四氢喹喔啉的合成。所有这些杂环都存在于多种生物活性化合物中。