The polymeric complex [Ru2(CO)4(mu-OAc)2]n is the first Ru(I) catalyst that efficiently catalyzes cyclopropanation of alkenes with diazoacetic esters. The related dinuclear catalyst Ru2(CO)4(mu-OAc)2(MeCN)2 shows a similar performance only for cyclopropanation of monosubstituted alkenes.
Highly Stereoselective C-Silylation and Alkylation of 1-Chlorocyclopropanecarboxylic Ester Using SmI<sub>2</sub>
Highly stereoselective SmI2-promoted substitutions of alkyl 1-chlorocyclopropanecarboxylate 1 using TMSCl or alkyl halide proceeded to give trans adduct 2 or 3 in moderate to high yield with excell...