A pyridinemethanol compound is an important intermediate for a mirtazapine which is useful as an antidepressant. The pyridinemethanol compound is obtained by reducing potassium pyridinecarboxylate represented by the formula (I):
1
with a metal hydride.
PRODUCTION METHOD OF OPTICALLY ACTIVE PIPERAZINE COMPOUND
申请人:Maeda Hiroshi
公开号:US20090275749A1
公开(公告)日:2009-11-05
Provided is a method of producing optically active 1-methyl-3-phenylpiperazine of the formula (11) or salt thereof, comprising the following steps 1 to 4, or steps 5 to 7 and step 4, and a method of producing optically active mirtazapine via this method.
Step 1,
Step 2,
Step 3,
Step 4,
Step 5,
Step 6,
Step
7
PROCESS FOR THE PREPARATION OF A PYRIDINEMETHANOL COMPOUND
申请人:SUMIKA FINE CHEMICALS Co., Ltd.
公开号:EP1238977A1
公开(公告)日:2002-09-11
A pyridinemethanol compound is an important intermediate for a mirtazapine which is useful as an antidepressant. The pyridinemethanol compound is obtained by reducing potassium pyridinecarboxylate represented by the formula (I):
with a metal hydride.
METHOD FOR PRODUCING 2-(4-METHYL-2-PHENYLPIPERAZINE-1-YL)-3-CYANOPIRIDINE
申请人:Sumitomo Chemical Company, Limited
公开号:EP1783125A1
公开(公告)日:2007-05-09
The present invention provides a process for producing 2-(4-methyl-2-phenylpiperazin-1-yl)-3-cyanopyridine which comprises reacting 1-methyl-3-phenylpiperazine with 2-chloro-3-cyanopyridine in the presence of an organic base and in the absence of alkali metal halide in an polar aprotic organic solvent.
PROCESS FOR PRODUCING OPTICALLY ACTIVE PIPERAZINE COMPOUND
申请人:Sumitomo Chemical Company, Limited
公开号:EP1930325A1
公开(公告)日:2008-06-11
Provided is a method of producing optically active 1-methyl-3-phenylpiperazine of the formula (11) or salt thereof, comprising the following steps 1 to 4, or steps 5 to 7 and step 4, and a method of producing optically active mirtazapine via this method.