ORGANOMETALLIC CHEMISTRY OF PORPHYRINS - SPECTROSCOPIC AND CHEMICAL CHARACTERIZATION OF A RHODIUM PORPHYRIN-ETHYL DIAZOACETATE ADDUCT

Iodorhodium(III) tetra-p-tolyporphyrin and ethyl diazoacetate (EDA) yield a 1:1 adduct possessing a metal-carbon bond. The C-13 and H-1 NMR spectra of this species suggest that it is a novel iodoalkyl complex resulting from formal insertion of the carbene fragment into the Rh-I bond. This and related species are of interest with regard to their potential roles in the rhodium porphyrin catalyzed cyclopropanation of alkenes by EDA.