Hydrochloric Acid → HCID 131722215, compound

Participants

Reaction Conditions

Reaction Steps

1.81 g (4.00 mmole) of 2-{(2R)-(3,4-dichlorophenyl)-4-[(3-isopropoxyphenyl)acetyl]morpholin-2-yl}ethanol [prepared as described in step (a) above] were dissolved in 5 ml of pyridine, and 45 mg (0.40 mmole) of 4-dimethylaminopyridine and 0.46 ml (6.00 mmole) of methanesulfonyl chloride were added to the resulting solution, whilst ice-cooling. The mixture was then stirred at 0° C. for 2 hours under a nitrogen atmosphere. At the end of this time, the reaction mixture was poured into ice-cooled 10% w/v aqueous hydrochloric acid, and then extracted with ethyl acetate. The organic extract was washed with a saturated aqueous solution of sodium chloride and then dried over anhydrous magnesium sulfate. The solvent was removed by distillation under reduced pressure, and the resulting residue was purified by silica gel column chromatography, using a gradient elution method, with mixtures of hexane and ethyl acetate ranging from 1:1 to 1:2 by volume as the eluent, to give 2.00 g of the title compound as a colorless oil.

Provenance & Evidence