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 trifluoromethylgroup 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