in tetrachloromethane 8 h; Heating;

benzyl alcohol in benzene

in water; acetonitrile Ambient temperature;

1: 78 percent 2: 1) 10percent aq.NaOH, Bu4NHSO4 / 1) CH2Cl2, r.t., 1 h, 2) CH2Cl2, r.t., 4 h 3: 93 percent / acetonitrile; H2O / Ambient temperature View Scheme

1: 1) 10percent aq.NaOH, Bu4NHSO4 / 1) CH2Cl2, r.t., 1 h, 2) CH2Cl2, r.t., 4 h 2: 93 percent / acetonitrile; H2O / Ambient temperature View Scheme

in diethyl ether

1: 75 percent / diisopropylethylamine / dimethylformamide / 12 h / Ambient temperature 2: trifluoroacetic acid / 0.67 h 3: diisopropylethylamine, 1-hydroxybenzotriazole / dimethylformamide / 12 h / Ambient temperature 4: trifluoroacetic acid / 0.67 h 5: diisopropylethylamine / dimethylformamide / 12 h / Ambient temperature 6: 80 percent / hydrogen / 10percent Pd/BaSO4 / dimethylformamide; H2O; various solvent(s) / 24 h View Scheme

potassium hydroxide; bis(o-nitrophenyl)phenylphosphonate; 4 A molecular sieve; tetrabutylammomium bromide; triethylamine 1.) THF/water, 1 h, 2.) THF, RT, 24 h; Yield given. Multistep reaction;

potassium hydroxide; bis(o-nitrophenyl)phenylphosphonate; 4 A molecular sieve; trithylamine; tetrabutylammomium bromide other acids; multistep reaction;

dicyclohexyl-carbodiimide