hydrogen; palladium on activated charcoal in methanol T=20°C; desilylation; 24 h;

1: With ozone in methanol T=-50°C; 0.166667 h; 2: With dimethylsulfide in methanol T=20°C; 1 h;

hydrogen; palladium on activated charcoal in methanol T=20°C; Catalytic hydrogenation; 24 h;

1: dimethylsulfide borane complex; dihydrogen peroxide; sodium hydroxide / tetrahydrofuran 2: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dimethyl sulfoxide 3: diethyl ether 4: sodium hydride / tetrahydrofuran 5: 2,2'-azo-bisisobutyronitrile; tri-n-butyl-tin hydride / toluene 6: dichloro bis(acetonitrile) palladium(II); oxygen; copper(l) chloride / water; N,N-dimethyl-formamide View Scheme