Production method of citalopram, intermediate therefor and production method of the intermediate
申请人:Sumika Fine Chemicals Co., Ltd.
公开号:US20040230066A1
公开(公告)日:2004-11-18
Citalopram can be industrially and economically produced and at a high yield by reacting a compound of the following formula [VI] with 3-(dimethylamino)propyl chloride in the presence of at least one of N,N,N′,N′-tetramethylethylenediamine and 1,3-dimethyl-2-imidazolidinone and a condensing agent. The compound of the following formula [III], which is a key compound for the production of citalopram, can be easily produced by subjecting the compound of the following formula [II] to reduction and cyclization.
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Citalopram可以通过将以下公式[VI]的化合物与3-(二甲氨基)丙基氯化物在至少一种N,N,N′,N′-四甲基乙二胺和1,3-二甲基-2-咪唑烷酮和缩合剂的存在下反应,以高收率进行工业和经济生产。以下公式[III]的化合物是生产Citalopram的关键化合物,可以通过还原和环化以下公式[II]的化合物来轻松生产。