HRID1796318

反应详情

EQUATION

反应方程式

HRID 1796318 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

To a solution of 5-(3-Fluoro-2′-methanesulfonyl-biphenyl-4-ylcarbamoyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid ethyl ester (1.520 g) in methylene chloride (12 ml) was added pyridine (4 equiv.) and 4-chlorophenyl isocyanate (1.25 equiv.). Stirred at room temperature for 16 hours. Evaporated and recorded crude 1H: 80156×134 RM1—revealed expected product and relatively clean. Purified by silica gel chromatography, eluant 10-100% EtOAc in hexane over 25 mins. Collected 1-(4-chloro-phenylcarbamoyl)-5-(3-fluoro-2′-methanesulfonyl-biphenyl-4-ylcarbamoyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid ethyl ester (1.480 g).

WORKUP

后处理

  1. customEvaporated
  2. customPurified by silica gel chromatography, eluant 10-100% EtOAc in hexane over 25 mins