HRID36239

反应详情

EQUATION

反应方程式

HRID 36239 的结构方程式

PROCEDURE

实验过程

The title compound was prepared from 5-n-butyl-2,4-dihydro-4-[(2'-sulfamoylbiphenyl-4-yl)methyl]-2-[2-(trifluoromethyl)phenyl]-3H-1,2,4-triazol-3-one (from Example 16, Step C), according to the procedure of Example 43 except that pivalic acid was used as the acid. Excess pivalic acid was removed by 10% aq. KHCO3. The crude product was purified by flash chromatography (gradient elution using 1-5% MeOH/CH2Cl2) to afford a 86% yield of the desired compound as a white solid, homogeneous by TLC in 5% MeOH/CH2C2 ; mass spectrum (FAB) m/e 615 (M+1)+ ; mp 176°-178° C.

WORKUP

后处理

  1. customExcess pivalic acid was removed by 10% aq. KHCO3
  2. customThe crude product was purified by flash chromatography (gradient elution using 1-5% MeOH/CH2Cl2)