Influence of an Internal Trifluoromethyl Group on the Rhodium(II)-Catalyzed Reactions of Vinyldiazocarbonyl Compounds
作者:Valerij A. Nikolaev、Murat B. Supurgibekov、Huw M. L. Davies、Joachim Sieler、Valerija M. Zakharova
DOI:10.1021/jo302726m
日期:2013.5.3
Incorporation of a trifluoromethyl group into the structure of 4-(alkoxycarbonyl)vinyldiazocarbonyl compounds greatly decreases the tendency of the carbenoid intermediates formed during Rh(II)-catalyzed reactions to undergo intermolecular processes. Instead, they are prone to experience intramolecular [1,5]- and [1,3]-electrocyclizations to produce reactive cyclopropenes and furans, and these are capable
在4-(烷氧基羰基)乙烯基重氮羰基化合物的结构中引入三氟甲基基团大大降低了在Rh(II)催化的反应过程中形成的类胡萝卜素中间体经历分子间过程的趋势。相反,它们倾向于经历分子内的[1,5]-和[1,3]-电环化反应以生成反应性环丙烯和呋喃,并且它们能够进一步转化。