N-H Insertion reactions of rhodium carbenoids. Part 4. New chiral dirhodium(II) carboxylate catalysts

Abstract

The reaction of methyl 2-diazophenylacetate 1 and dimethyl -diazobenzylphosphonate 2 with various N-H components in the presence of chiral dirhodium(II) catalysts results in N-H insertion in good yield but with little or no stereoselectivity.