HRID1390546

反应详情

EQUATION

反应方程式

HRID 1390546 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

A mixture of 1.0 gram of N2 -(7-methoxy-2-naphthalenesulfonyl)-L-arginine, 1.0 gram of p-toluenesulfonic acid monohydrate in 5 ml of benzyl alcohol and 30 ml of benzene was refluxed for 5 hours, removing water by azeotropic distillation. After the solvent was removed by distillation, 100 ml of ethyl ether was added to the residae, giving a crystalline mass of N2 -(7-methoxy-2-naphthalenesulfonyl)-L-arginine benzyl ester p-toluenesulfonate in 94% yield; mp. 115 - 117° C.

WORKUP

后处理

  1. temperaturewas refluxed for 5 hours
  2. customremoving water
  3. distillationby azeotropic distillation
  4. customAfter the solvent was removed by distillation, 100 ml of ethyl ether
  5. additionwas added to the residae