Palladium(0) catalyzed substitution reactions of cyclopropyl group containing allylic esters
作者:Andreas Stolle、Jacques Salaün、Armin de Meijere
DOI:10.1016/s0040-4039(00)97684-6
日期:1990.1
Complete regioselectivity is observed in palladium(0) catalyzed allylic substitution reactions of 1-vinylcyclopropyl 3 and cyclopropylldeneethyl esters 6 with a series of soft carbon nucleophiles to give γ-cyclopropylidene-1,3-dicarbonyl and 1-carbonyl-2-sulfonyl compounds. Highly functionalized mathylenecyclopropanes are thus obtained in good to excellent yields from easily accessible 1-vinylcyclopropyl
Stereoselective rhodium-catalyzed [(3+2)+2] carbocyclization reaction of trialkoxysilyl-substituted alkenylidenecyclopropanes with monosubstituted alkynes
作者:P. Andrew Evans、Tomass Baikstis、Phillip A. Inglesby
DOI:10.1016/j.tet.2013.05.096
日期:2013.9
The highly regio- and diastereoselective rhodium-catalyzed [(3+2)+2] carbocyclization reaction of trialkoxysilyl-substituted alkenylidenecyclopropanes (ACPs) with monosubstituted alkynes is reported. This work represents the first example of a metal-catalyzed higher-order carbocyclization with a vinylsilane, which facilitates the regioselective insertion of the alkyne and the selective introduction