O-benzyl methylsulfanylmethanethioate

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of sodium amide (3.9 g) in toluene (150 mL) was added a mixture of dithiocarbonic acid O-benzyl ester S-methyl ester (9.9 g) and 3-methyl-2-butanone (4.3 g) at room temperature and the mixture was stirred at room temperature overnight. The reaction mixture was poured into a hydrochloric acid aqueous solution (1 mol/L, 500 mL), and the mixture was extracted with diethyl ether. The organic layer was washed with brine and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: hexane-hexane/ethyl acetate=20/1) to give the title compound (4.6 g). was added the mixture was extracted with diethyl ether The organic layer was washed with brine dried over anhydrous magnesium sulfate The solvent was removed under reduced pressure The residue was purified by column chromatography on silica gel (eluent: hexane-hexane/ethyl acetate=20/1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of sodium amide (1.6 g) in toluene (50 mL) was added a mixture of dithiocarbonic acid O-benzyl ester S-methyl ester (4.0 g) and 4-methoxybenzophenone (3.0 g) at room temperature and the mixture was stirred at room temperature overnight. Hydrochloric acid solution (2 mol/L, 80 mL) was added to the reaction mixture and the mixture was extracted with diethyl ether. The organic layer was washed with brine and dried over anhydrous magnesium sulfate, and the solvent was removed under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: hexane/dichloromethane=5/1-2/1) to give the title compound (3.4 g). was added the mixture was extracted with diethyl ether The organic layer was washed with brine dried over anhydrous magnesium sulfate the solvent was removed under reduced pressure The residue was purified by column chromatography on silica gel (eluent: hexane/dichloromethane=5/1-2/1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of S-methyl O-benzyl dithiocarbonate (6.90 g) and 3-methylbutan-2-one (3.00 g) in toluene (20 mL) was added dropwise to a suspension of sodium amide (2.71 g) in toluene (60 mL) at 0° C. over a 5-minute period. The mixture was stirred at room temperature for 2 hours. The reaction mixture was poured into water, and the mixture was acidified by addition of 1 mol/L hydrochloric acid. The resulting mixture was extracted with diethyl ether, and the organic layer was washed with water and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: hexane/ethyl acetate=10/1) to give the title compound (5.90 g). The resulting mixture was extracted with diethyl ether the organic layer was washed with water dried over anhydrous magnesium sulfate The solvent was removed under reduced pressure the residue was purified by column chromatography on silica gel (eluent: hexane/ethyl acetate=10/1)