(i) O3, (ii) (hydrolysis); Multistep reaction;

1: 1.) diborane, 2.) 3 N NaOH, 30percent H2O2 / 1.) THF, RT, 1 h, 2.) 40 deg C, 1 h 2: 1.) pyridine, p-toluenesulfonyl chloride, 2.) H2 / platinum oxide / 1a ) 5 deg C, 0.5 h, b ) RT, 40 h, 2.) ethyl acetate, RT, 2 h View Scheme

oxygen in methanol Ambient temperatureprotected from light; or at 0 deg C with h*ν; Yield given. Yields of byproduct given;

oxygen Ambient temperature; Yield given. Yields of byproduct given;

oxygen Ambient temperature; Yield given. Yields of byproduct given;

oxygen in acetone 28 h; Ambient temperatureother solvents, other times ; protected from light; oxygenation of other cyclic strained olefins; addition of various inhibitors or initiators; Product distributionMechanism;