Synthesis of polysubstituted cyclopenta[b]indoles via relay gold(<scp>i</scp>)/Brønsted acid catalysis
作者:Seema Dhiman、S. S. V. Ramasastry
DOI:10.1039/c4cc08174a
日期:——
various polysubstituted cyclopentannulated indoles from easily accessible 1-(2-aminophenyl)prop-2-ynols and readily available 1,3-dicarbonyls has been developed. In an unprecedented event, the intermediate 2-indolylmethyl cations undergo the cation-Ene reaction with various 1,3-dicarbonyls followed by an intramolecular Friedel-Crafts-type reaction generating functionalized cyclopenta[b]indoles.
已经开发出一种有效的中继催化方法,该方法涉及Au(i)/ Bronsted酸从易于获得的1-(2-氨基苯基)丙-2-炔醇和易于获得的1,3-二羰基化合物中获得各种多取代的环戊二烯基吲哚。在史无前例的事件中,中间体2-吲哚基甲基阳离子与各种1,3-二羰基发生阳离子-烯反应,随后发生分子内Friedel-Crafts型反应,生成官能化的环戊[b]吲哚。