HRID1390546
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
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
- temperaturewas refluxed for 5 hours
- customremoving water
- distillationby azeotropic distillation
- customAfter the solvent was removed by distillation, 100 ml of ethyl ether
- additionwas added to the residae