Bifunctional Cinchona Alkaloid/Thiourea Catalyzes Direct and Enantioselective Vinylogous Michael Addition of 3-Alkylidene Oxindoles to Nitroolefins
作者:Claudio Curti、Gloria Rassu、Vincenzo Zambrano、Luigi Pinna、Giorgio Pelosi、Andrea Sartori、Lucia Battistini、Franca Zanardi、Giovanni Casiraghi
DOI:10.1002/anie.201202027
日期:2012.6.18
Vinylogy: Advances in asymmetric catalysis using the bifunctional cinchona alkaloid/thioureas enabled an umpolung of the classical Cβ reactivity of 3‐alkylidene oxindoles, thus allowing the development of the first and sole example of a direct, organocatalytic asymmetric vinylogous Michael (AVM) reaction with nitroolefins.
插烯:使用在不对称催化进展双功能金鸡纳生物碱/硫脲使经典C的极性转换β 3亚烷基羟吲哚的反应性,从而允许直接的,有机催化不对称插烯迈克尔(AVM)反应的第一和唯一例子的发展与硝基烯烃。