CN104109135B - 1-[2-(2,4-二甲基苯基硫烷基)-苯基]哌嗪的制备方法 - Google Patents

1-[2-(2,4-二甲基苯基硫烷基)-苯基]哌嗪的制备方法 Download PDF

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CN104109135B
CN104109135B CN201310141927.2A CN201310141927A CN104109135B CN 104109135 B CN104109135 B CN 104109135B CN 201310141927 A CN201310141927 A CN 201310141927A CN 104109135 B CN104109135 B CN 104109135B
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dimethylphenylsulfanyls
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CN104109135A (zh
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戚郜飞
杜祖银
任帆
游军辉
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Jiangsu Hansoh Pharmaceutical Group Co Ltd
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Abstract

本发明涉及1‑[2‑(2,4‑二甲基苯基硫烷基)‑苯基]哌嗪的制备方法。该方法包括在碱和催化剂存在下,使化合物II与化合物III在有机溶剂中反应生成化合物I。本发明所提供的制备方法无需使用钯催化剂,低成本、高产率、易纯化、易工业化。

Description

1-[2-(2,4-二甲基苯基硫烷基)-苯基]哌嗪的制备方法
技术领域
本发明属于药物合成技术领域,具体涉及一种低成本、绿色环保的制备1-[2-(2,4-二甲基苯基硫烷基)-苯基]哌嗪的合成方法。
背景技术
1-[2-(2,4-二甲基苯基硫烷基)-苯基]哌嗪为二芳基硫醚胺类物质,其氢溴酸盐(Lu AA21004,Vortioxetine Hydrobromide)是一类新的化学类抗抑郁药物;主要用于治疗抑郁症和焦虑症。该产品为Lundbeck和Takeda共同研发,2012.09,通过集中审评程序在欧洲提交用于抑郁症的MAA申请;2012.10,在美国提交用于治疗成人重度抑郁症(MDD)的NDA申请。在专利WO03029232中,该化合物被公开,且受到专利保护;在WO2007144005的分案专利CN102617513A中,具体保护了该化合物的制备方法。其保护的重点如下所示:
上述保护的整体思路基本可归纳为下述两种:
该专利从溶剂、碱以及所使用的钯源等诸多因素对上述路线进行了保护;关键是该专利运用了多种钯的重金属催化剂,而在药物合成中,其重金属尤其是钯是需要严格限制的;更为重要的是,采用专利的合成方法,会导致反应过程中其它偶联杂质产生,给后续纯化带来困难。
发明内容
本发明的目的在于提供一种1-[2-(2,4-二甲基苯基硫烷基)-苯基]哌嗪的制备方法,所述方法包括在碱和催化剂存在下,使化合物II与III在有机溶剂反应生成化合物I,
其中,所使用的碱选自甲醇钠、乙醇钠、叔丁醇钾、氢氧化钠、氢氧化钾、碳酸钠或碳酸钾;进一步地,所使用的碱为碳酸钾或碳酸钠。
其中,所使用的催化剂选自碘化钾或碘化钠,进一步地,所使用的催化剂为碘化钾。
其中,X1和X2独立地表示卤素,或者其它易离去基团;进一步地,X1和X2独立地表示氯、溴、碘;或OMs、OTs,OTf;更进一步地,X1和X2独立地表示氯或溴;更进一步地,X1和X2均表示氯。
R表示氢或者其它保护基团;进一步地,R表示选自H、Boc、Bn、Cbz、C(=O)OEt和Me的保护基团;更进一步地,R表示氢。
X表示常见的酸的阴离子;进一步地,X表示盐酸、氢溴酸、甲磺酸、硫酸、硝酸、酒石酸、磷酸等常见的酸的阴离子;更进一步地,X为氯离子。
其中,所使用的有机溶剂选自2-丁酮、乙酸乙酯、乙腈、四氢呋喃、二氯甲烷、甲醇、乙醇、异丙醇、正丁醇;进一步地,所使用的有机溶剂选自乙酸乙酯、四氢呋喃、乙腈、乙醇、正丁醇;更进一步地,所使用的有机溶剂为乙腈。
本发明所提供的1-[2-(2,4-二甲基苯基硫烷基)-苯基]哌嗪的制备方法无需使用钯催化剂,低成本、高产率、易纯化、易工业化。
具体实施方式
为了更好地理解本发明的内容,下面结合具体实施例作进一步说明,但本发明的保护范围并非局限于具体实施例。
实施例1:
将化合物II(2-(2,4-二甲基苯基硫烷基)-苯胺)(45.87g,0.2mol)、二(2-氯乙基)胺盐酸盐(46.4g,0.26mol)、碳酸钾(55.0g,0.4mol)、碘化钾(33mg,0.2mmol)加入到乙腈(500ml)中,加热回流反应24h,趁热过滤,滤液室温搅拌,析晶,抽滤,滤饼用乙腈洗涤,将滤饼于40℃真空干燥10h,得到化合物I(白色固体,46.57g),摩尔收率78%。熔点:116~118℃,HPLC:98.3%。LC/MS(m/z)299(MH+),NMR符合上述结构。
实施例2:
将化合物II(2-(2,4-二甲基苯基硫烷基)-苯胺)(22.93g,0.1mol)、二(2-氯乙基)胺盐酸盐(23.2g,0.13mol)、碳酸钾(27.5g,0.2mol)、碘化钾(16.5mg,0.1mmol)加入到正丁醇(300ml)中,加热回流反应24h,趁热过滤,缓慢冷却至室温,析晶,过滤,滤饼用乙腈洗涤,将滤饼于40℃真空干燥10h,得到化合物I(白色固体,35.8g),摩尔收率60%。
实施例3:
将化合物II(2-(2,4-二甲基苯基硫烷基)-苯胺)(22.93g,0.1mol)、二(2-氯乙基)胺盐酸盐(23.2g,0.13mol)、碳酸钾(27.5g,0.2mol)、碘化钾(16.5mg,0.1mmol)加入到乙酸乙酯(300ml)中,加热回流反应24h,趁热过滤,缓慢冷却至室温,加入少许晶种析晶,过滤,滤饼用乙酸乙酯洗涤,将滤饼于40℃真空干燥10h,得到化合物I(白色固体,32.8g),摩尔收率54.9%。
实施例4:
将化合物II(2-(2,4-二甲基苯基硫烷基)-苯胺)(22.93g,0.1mol)、二(2-氯乙基)胺盐酸盐(23.24g,0.13mol)、碳酸钾(27.5g,0.2mol)、碘化钾(16.5mg,0.1mmol)加入到四氢呋喃(300ml)中,加热回流反应24h,趁热过滤,缓慢冷却至室温,加入少许晶种析晶,过滤,滤饼用四氢呋喃洗涤,将滤饼于40℃真空干燥10h,得到化合物I(白色固体,28.4g),摩尔收率47.5%。
实施例5:
将化合物II(2-(2,4-二甲基苯基硫烷基)-苯胺)(22.93g,0.1mol)、二(2-氯乙基)胺盐酸盐(23.2g,0.13mol)、碳酸钾(27.5g,0.2mol)、碘化钾(16.5mg,0.1mmol)加入到乙醇(300ml)中,加热回流反应24h,趁热过滤,缓慢冷却至室温,加入少许晶种析晶,过滤,滤饼用少量乙醇洗涤,将滤饼于40℃真空干燥10h,得到化合物I(白色固体,26.8g),摩尔收率44.9%。
实施例6:
将化合物II(2-(2,4-二甲基苯基硫烷基)-苯胺)(45.87g,0.2mol)、二(2-甲磺酸酯基乙基)胺盐酸盐(77.4g,0.26mol)、碳酸钾(55.0g,0.4mol)、碘化钾(33mg,0.2mmol)加入到乙腈(500ml)中,加热回流反应24h,趁热过滤,滤液室温搅拌析晶,抽滤,滤饼用乙腈洗涤,将滤饼于40℃真空干燥10h,得到化合物I(白色固体,38.8g),摩尔收率65%。熔点:115~117℃,HPLC:97.3%。

Claims (1)

1.一种式I化合物的制备方法,
所述方法包括在碳酸钾55.0g,0.4mol、碘化钾33mg,0.2mmol存在下,将45.87g,0.2mol化合物II与46.4g,0.26mol二(2-氯乙基)胺盐酸盐加入到乙腈500ml中,加热回流反应24h,趁热过滤,滤液室温搅拌,析晶,抽滤,滤饼用乙腈洗涤,将滤饼于40℃真空干燥10h,得到化合物I,
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CN115181077B (zh) * 2022-07-27 2024-03-29 安徽峆一药业股份有限公司 一种低杂质含量的沃替西汀合成方法
CN115536610B (zh) * 2022-10-13 2024-01-23 湖南省湘中制药有限公司 一种伏硫西汀的制备方法

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