Abstract

New, optically active ligands derived from imidazole were tested in the cyclopropanation reaction of styrene using ethyl diazoacetate and copper(I) triflate as a catalyst.

Keywords: Cyclopropanation, diazo compounds, imidazole N-oxides, styrene, cylopropane, stereoselective formation, chiral ligands, enantioselectivity, imidazole, thiones