哌嗪 、 5-[2-(Methanesulfonyloxy)-ethyl]benzofurazan 在
silica gel 、 Ammonia methanol dichloromethane 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 19.0h,
以90:10:1 to give the piperazine as a yellow solid (225 mg, 97%)的产率得到5-(2-piperazin-1-ylethyl)-2,1,3-benzoxadiazole
参考文献:
名称:
Benzofuran compounds as class III antiarrhythmic agents
Spirocycles of general structural formula: ##STR1## are Class III antiarrhythmic agents.
通用结构式为:##STR1## 的螺环化合物是III类抗心律失常药物。
Benzofurazan derivatives having antiarrhythmic properties
申请人:MERCK & CO. INC.
公开号:EP0431944A2
公开(公告)日:1991-06-12
Compounds of structural formula:
wherein R' is hydrogen or an aromatic ring system, and Q is a substituted nitrogen or a nitrogen containing heterocycle, and E is -S- or -O-, are Class III antiarrhythmic agents.