申请人:Iwamura Hiroshi
公开号:US20110295013A1
公开(公告)日:2011-12-01
Provision of an industrial method of producing a 1-(4-piperidinyl)benzimidazolone derivative in a high yield at a low cost.
A production method of 1-(4-piperidinyl)benzimidazolone derivative (1) or a salt thereof according to the following steps.
[step 1] a step of subjecting a piperidone compound (2) and an aniline compound (3) to a reductive amination reaction to give to a compound (4)
[step 2] a step of reacting the compound (4) with di-t-alkyl dicarbonate or N,N′-disuccinimidyl carbonate to give the 1-(4-piperidinyl)benzimidazolone derivative (1)
wherein R
1
is optionally substituted alkyl or an optionally substituted cyclic group, and
R
2
is optionally substituted alkyl, optionally substituted alkenyl or optionally substituted aryl.
提供一种工业方法,以低成本高产率生产1-(4-哌啶基)苯并咪唑酮衍生物。根据以下步骤生产1-(4-哌啶基)苯并咪唑酮衍生物(1)或其盐。[步骤1] 将哌啶酮化合物(2)和苯胺化合物(3)经还原胺化反应得到化合物(4)的步骤[步骤2] 将化合物(4)与二叔丁基二碳酸酯或N,N'-二琥珀酰亚胺碳酸酯反应,得到1-(4-哌啶基)苯并咪唑酮衍生物(1)其中R1可选地为取代烷基或取代环烷基,R2可选地为取代烷基、取代烯烃基或取代芳基。