oxygen; 5,15,10,20-tetraphenylporphyrin in dichloromethane 1 h; Irradiation; Yield given. Yields of byproduct given;

1: diethyl ether 2: 1.) mesyl chloride, Et3N, 2.) 90percent H2O2 / 1.) diethyl ether, -60 deg C to r.t., 2.a) diethyl ether, cooling, b) r.t., 30 min View Scheme

tert.-butylhydroperoxide; oxygen T=60°C;

(tBuOOCO)2; di-tert-butyl peroxide; oxygen in benzene T=60°C; also bis-4-tert-butylcyclohexyl peroxydicarbonate as initiator, (E)-4-methyloct-4-ene, other peroxides; Product distribution;