Gold-Catalyzed Oxidative Cyclizations of 2-Oxiranyl-1-alkynylbenzenes for Diastereoselective Synthesis of Highly Substituted 2-Hydroxyindanones
作者:Rupsha Chaudhuri、Rai-Shung Liu
DOI:10.1002/adsc.201100325
日期:2011.10
We report the gold-catalyzed oxidative cyclizations of 2-oxiranyl-1-alkynylbenzenes into highly substituted 2-hydroxyindanone frameworks bearing a tertiary alcohol. Such gold-catalyzed reactions comprise an initial internal redox reaction, sulfoxide oxidation of α-carbonyl gold-carbenoids, followed by gold-catalyzed formal ene reactions on the resulting diketone intermediates.
我们报告了2-环氧乙烷基-1-炔基苯到带有叔醇的高度取代的2-羟基茚满酮骨架中的金催化氧化环化反应。此类金催化的反应包括初始内部氧化还原反应,α-羰基金-类胡萝卜素的亚砜氧化,然后在所得的二酮中间体上进行金催化的甲醛反应。