Reactivity Studies of Rhodium(III) Porphyrins with Methanol in Alkaline Media

Rh(ttp)Cl (1a) (ttp = 5,10,15,20-tetrakistolylporphyinato dianion) was found to react with methanol at a high temperature of 150 degrees C in the presence of inorganic bases to give a high yield of Rh(ttp)CH3 (2a), up to 87%. Rh(ttp)H (1d) is suggested to be the key intermediate for the carbon-oxygen bond cleavage.