中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
对甲苯磺酰肼 | toluene-4-sulfonic acid hydrazide | 1576-35-8 | C7H10N2O2S | 186.235 |
An efficient method for the preparation of sulfonamidourea using triphosgene in organic solvents is reported.Sulfonylhydrazides and acetylsulfanilylhydrazide were transformed into the corresponding intermediates using triphosgene in 1,4-dioxane/water or tetrahydrofuran as solvents.These intermediates were converted in situ into symmetrical and unsymmetrical sulfonamidoureas in high yields and shorter periods of time related to previous methods.