Combination of urea hydrogen peroxide and p-toluenesulfonyl chloride in methanol was proved to be facile and highly efficient for the oxidative methyl esterification of various aldehydes to the corresponding carboxylic methyl esters.

中文翻译：

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用尿素过氧化氢和对甲苯磺酰氯将醛直接氧化成甲酯

尿素过氧化氢和对甲苯磺酰氯在甲醇中的组合被证明对于将各种醛氧化甲酯化为相应的羧酸甲酯是容易和高效的。