Nitric Acid → 2(3H)-Benzothiazolone, 6-nitro-

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반응 단계

0.1 mol of benzothiazolinone is dissolved in 100 ml of acetic anhydride and the solution is cooled to −10° C. 10 ml of nitric acid are then added dropwise, and the reaction is stirred for 2 hours. The resulting precipitate is filtered off and washed with water, and then purified by chromatography (eluant CH2Cl2 then AcOEt) to yield the title product, which is recrystallised from ethanol.

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