HRID1198705

反应详情

EQUATION

反应方程式

HRID 1198705 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

The palladium(0)-catalyzed coupling of 4-(4-bromo-2-fluorobenzyl)-5-n-butyl-2-(2-chloro-5-nitrophenyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (from Step A) with 2-(N-t-butylsulfamoyl)phenylboronic acid was carried out according to the procedure of Example 28, Step F. Purification of the crude product by flash chromatography on silica gel (gradient elution with 6:1 to 4:1 hexane-EtOAc) provided a 52% yield of the title compound as a stiff, pale yellow foam, mp 124°-126° C.; homogeneous by TLC in 4:1 hexane-EtOAc); mass spectrum (FAB) m/e 616 (M+1)+.

WORKUP

后处理

  1. customPurification of the crude product by flash chromatography on silica gel (gradient elution with 6:1 to 4:1 hexane-EtOAc)