Method of preparation of (s)-n-tert-butyl-1,2,3,4-tetrahydroisoquinoline-3-carboxamide
申请人:——
公开号:US20040034056A1
公开(公告)日:2004-02-19
A new method is described here for the synthesis of (S)-N-tert-butyl-1,2,3,4-tetrahydroiso-quinoline-3-carboxamide comprising the following steps:
a) (3S)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid is reacted with formic acid to give the compound of formula:
1
b) the compound thus obtained is reacted with tert-butylamine to give the compound of formula:
2
c) the compound thus obtained is then treated with acids to give the desired compound.
The method in question makes it possible to obtain (S)-N-tert-butyl-1,2,3,4-tetrahydroiso-quinoline-3-carboxamide with high yields and purity without using toxic and hazardous reagents.
这里描述了一种合成(S)-N-叔丁基-1,2,3,4-四氢异喹啉-3-羧酰胺的新方法,包括以下步骤:a) (3S)-1,2,3,4-四氢异喹啉-3-羧酸与甲酸反应,得到化合物1的配方:1b) 得到的化合物与叔丁基胺反应,得到配方为2的化合物:2c) 然后用酸处理得到所需的化合物。所述方法使得能够在不使用有毒和危险试剂的情况下高产率和纯度地获得(S)-N-叔丁基-1,2,3,4-四氢异喹啉-3-羧酰胺。