Water → HCID 18932144, compound

Participants

Reaction Steps

18 mg of sodium hydride (as a 60% w/w dispersion in mineral oil) were added to a solution of 100 mg of methyl N-[4-(benzothiazol-2-ylmethoxy)-2-methylphenyl]carbamate (prepared as described in Example 22 above) in 4 ml of dimethylformamide cooled in an ice-water bath. The resulting mixture was stirred for 15 minutes at the same temperature, after which 0.059 mi of 2-chloropropionyl chloride were added. The temperature of the resulting mixture was elevated to room temperature and the mixture was stirred for 3 hours. At the end of this time, water was added to the reaction mixture and the resulting mixture was extracted with ethyl acetate. The resulting extract was washed consecutively with water and a saturated aqueous sodium chloride solution and then dried over anhydrous sodium sulfate. The solvent was then removed by evaporation under reduced pressure. The resulting.; residue was purified by preparative thin layer chromatography using a 1:1 by volume mixture of hexane and ethyl acetate to give 70 mg (yield 54%) of the title compound as an oil.

Provenance & Evidence