Asymmetric cyclopropanation of alkenes and diazocarbonyl insertion into S-H bonds catalyzed by a chiral porphyrin Ru(II) complex

Article abstract of DOI:10.1016/S0040-4039(98)00194-4

A homochiral porphyrin ruthenium(II) complex catalyzes the cyclopropanation of styrene derivatives with ethyl diazoacetate with good yields and moderate enantiomeric excesses (46-52%). The catalyst is also active for diazocarbonyl compound insertion into S-H bonds, but with low ee.