反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
At room temperature, under N2, a solution of 34 mg (0.052 mmole) of 2-(5-amino-2-chlorophenyl)-5-n-butyl-4-[[2'-[N-(2-chlorobenzoyl)sulfamoyl]biphenyl-4-yl]methyl]-2,4-dihydro-3H-1,2,4-triazol-3-one (from Example 60), 6.4 mg (0.052 mmole) of DMAP, 23 mg (0.26 mmole) of propyl isocyanate, and 1 mL of pyridine was stirred overnight. After quenching with water, the organic material was extracted with EtOAc, washed with water and brine, and dried over sodium sulfate. The crude product obtained after filtration and removal of volatiles was flash chromatographed over silica gel (gradient elution with 0.5-5% MeOH/CH2Cl2) to give 23 mg (61%) of the desired compound as a white solid, mp >208° C. (gradual), homogeneous by TLC (9:1 MeOH/CH2Cl2), mass spectrum (FAB) m/e 773 (M+K)+.
WORKUP
后处理
- customAfter quenching with water
- extractionthe organic material was extracted with EtOAc
- washwashed with water and brine
- dry with materialdried over sodium sulfate
- customThe crude product obtained
- filtrationafter filtration and removal of volatiles
- customchromatographed over silica gel (gradient elution with 0.5-5% MeOH/CH2Cl2)