Water → HCID 135840835, compound

Participants

Reaction Steps

A mixture of 3-[3-(o-hydroxyphenyl)-1,2-benzisothiazol-5-yl]-1-methyl-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione (3.67 g, 8.75 mmol) and triethylamine (0.970 g, 9.63 mmol) in methylene chloride is cooled with an ice-water bath, treated with triflic anhydride (2.72 g, 9.63 mmol), stirred at room temperature overnight, and poured into water. The resultant aqueous mixture is extracted with methylene chloride. The organic extracts are combined, washed with brine, dried over anhydrous magnesium sulfate, and concentrated in vacuo to obtain an oil. Column chromatography of the oil using silica gel and a 3% diethyl ether in methylene chloride solution gives the title product as a white foam which is identified by NMR spectral analyses.

Provenance & Evidence