1. S-Methyl-isothiourea sulfate was oxidized by hydrogen peroxide to give methylsulfonyl chloride in 70% yield in aqueous hydrochloric acid solution.The product was characterized by 1HNNR and IR.
   在盐酸介质中，利用双氧水氧化S-甲基异硫脲盐，合成了甲基磺酰氯，收率70％。

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