反应详情

To a pre-cooled solution of potassium tertiary butoxide (538.4 g) in DMF (1750 ml) at −20 to −10° C., added racemic methyl lactate compound of formula-11 (500 g) followed by benzyl chloride (547 g) at −20 to −10° C. and the reaction mixture was stirred for 5 hours at the same temperature. After completion of the reaction, the reaction mixture was quenched with water and the reaction mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with water and 10% sodium chloride solution and then distilled off the solvent from ethyl acetate layer under reduced pressure to get the title compound as a residue. The obtained residue was taken into next step without isolation.

1. customAfter completion of the reaction
2. customthe reaction mixture was quenched with water
3. extractionthe reaction mixture was extracted with ethyl acetate
4. washThe ethyl acetate layer was washed with water and 10% sodium chloride solution
5. distillationdistilled off the solvent from ethyl acetate layer under reduced pressure