m-Chloroperbenzoic acid → HCID 20245392, compound

Participants

Reaction Steps

8.85 Parts by weight of m-chloroperbenzoic acid in 150 parts of methylene chloride are added to a mixture of 16.2 parts of 2-(m-trifluoromethylmercapto-phenyl)-3,1-benzoxazin-4-one and 130 parts of methylene chloride at room temperature. The mixture is then stirred for a further 22 hours. The precipitate, which has formed is dissolved by adding 100 parts of methylene chloride and the solution obtained is extracted twice with 0.3 N sodium hydroxide solution and with water. It is then dried over magnesium sulfate and chromatographed over aluminum oxide, giving 12.4 parts of 2-(m-trifluoromethylsulfinyl-phenyl)-3,1-benzoxazin-4-one, of melting point 106°-108° C.

Provenance & Evidence