CN104402800A - 一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法 - Google Patents
一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法 Download PDFInfo
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- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
- C07D211/18—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D211/20—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by singly bound oxygen or sulphur atoms
- C07D211/22—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by singly bound oxygen or sulphur atoms by oxygen atoms
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Abstract
本发明公开了一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法,是通过对氟苯甲醛和磷酰基乙酸三乙酯反应生成4-氟肉桂酸乙酯,4-氟肉桂酸乙酯再与N-甲胺基羰基乙酸乙酯反应生成环合物哌啶二酮,环合物哌啶二酮最后与四氢呋喃、硼氢化钾和三氟化硼乙醚反应三氟化硼乙醚生成产品。本发明制备的反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶质量好,纯度高,制备方法简单,能耗少,成本低。
Description
技术领域
本发明涉及药品制造领域,具体是一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法。
背景技术
反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶,用作药物帕罗西汀中间体。帕罗西汀(Paroxetine)是一种选择性血清素再吸收抑制剂(SSRI)型的抗抑郁药,其药物形态为盐酸帕罗西汀(Paroxetine hydrochloride),商品名为“赛乐特”(Seroxat)。在临床上常用于抑郁症和强迫症的治疗。
发明内容
本发明要解决的技术问题是提供一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法,其成本低,收率高。
本发明的技术方案为:
一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法,包括如下步骤:
(1)、首先将无水乙醇和氢氧化钾加入到反应容器中,然后在温度20-25℃下滴加对氟苯甲醛和磷酰基乙酸三乙酯混合液,滴加完毕保温反应13小时,反应液压滤除去固体物质,然后常压蒸馏回收乙醇,残液冷却到室温,加甲苯和水后搅拌静置分水,甲苯层干燥、压滤、蒸馏得4-氟肉桂酸乙酯;
(2)、先将无水乙醇和N-甲胺基羰基乙酸乙酯加入到反应容器中,然后在-15—5℃滴加乙醇钠的乙醇溶液,然后继续滴加4-氟肉桂酸乙酯和无水乙醇混合物,保温13小时,调节PH为5—6,冷冻,粗品析出,离心得环合物哌啶二酮粗品;
(3)、先将四氢呋喃和硼氢化钾加入到反应容器中,然后在35℃滴加环合物哌啶二酮和四氢呋喃/乙醇混合液, 然后在l5℃以下滴加三氟化硼乙醚/四氢呋喃混合液,滴毕于28℃保温反应15h结束反应,冷却到-10℃,然后滴加到盐酸中,搅拌3—4小时,压滤、滤液蒸馏,残余物加二甲苯和水于80℃温热分层,二甲苯层萃取,调节PH=9,再经搅拌、静置、分水,甲苯层干燥、压滤,滤液蒸馏,用石油醚重结晶、离心、烘干得反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶。
所述的步骤(1)中对氟苯甲醛和磷酰基乙酸三乙酯的质量比为1 :1.3—1.4。
所述的步骤(2)中4-氟肉桂酸乙酯和N-甲胺基羰基乙酸乙酯的质量比为1 :0.85—0.9。
所述的步骤(2)中环合物哌啶二酮粗品加入到丙酸甲酯溶解、冷却、水洗、静置分出水层萃取,有机层干燥、压滤,滤液蒸馏、抽真空,最后加入正丁醇过滤、冷却、结晶、离心,得到精品环合物哌啶二酮。
本发明的优点:
本发明制备的反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶质量好,纯度高,制备方法简单,能耗少,成本低。
具体实施方式
一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法,包括如下步骤:
(1)、首先将28g无水乙醇和3.5g氢氧化钾加入到反应容器中,然后在温度20-25℃下滴加6.4g对氟苯甲醛和8.5g磷酰基乙酸三乙酯混合液,滴加完毕保温反应13小时,瓶内有固体盐产生,反应液压滤除去固体物质,常压蒸馏回收乙醇,残液冷却到室温,加甲苯15ml,水30ml搅拌静置分水,甲苯层加入2g无水硫酸钠干燥,再压滤到甲苯蒸馏瓶中蒸馏得4-氟肉桂酸乙酯;
(2)、先将10ml无水乙醇和6.2g N-甲胺基羰基乙酸乙酯加入到反应容器中,然后在-15—5℃滴加乙醇钠的乙醇溶液(0.8g钠、5ml无水乙醇),然后继续滴加7.1g 4-氟肉桂酸乙酯和10ml无水乙醇混合物,保温13小时,用6g乙酸调节pH为5.5,冷冻,粗品析出,离心得环合物哌啶二酮粗品;环合物哌啶二酮粗品加入到15ml丙酸甲酯溶解、冷却、加12ml水洗、静置分出水层到分液漏斗中用25ml丙酸甲酯萃取,分出水层弃去,有机层中加入无水硫酸钠干燥、压滤,滤液蒸馏回收丙酸甲酯套用,其它部分抽真空除尽丙酸甲酯,最后加入正丁醇过滤、冷却、结晶、离心,得到精品环合物哌啶二酮;
(3)、先将22.5ml四氢呋喃和2.8g硼氢化钾加入到反应容器中,然后在35℃滴加5g环合物哌啶二酮和12ml四氢呋喃/乙醇混合液(体积比1:4), 然后在l5℃以下滴加6ml三氟化硼乙醚/5ml四氢呋喃混合液,滴毕于28℃保温反应15h结束反应,冷却到-10℃,然后滴加到4ml 25%盐酸中,搅拌3—4小时,压滤、滤液蒸馏,残余物加l0ml二甲苯和l5ml水于80℃温热分层,二甲苯层用10ml水萃取,合并水层,二甲苯层中再加入10ml二甲苯,滴加20%碱液调节pH=9,再经搅拌、静置、分水,甲苯层干燥、压滤,滤液蒸馏,用石油醚重结晶、离心、烘干得反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶,含量98.57%,收率87.2l%;
。
Claims (4)
1.一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法,其特征在于:包括如下步骤:
(1)、首先将无水乙醇和氢氧化钾加入到反应容器中,然后在温度20-25℃下滴加对氟苯甲醛和磷酰基乙酸三乙酯混合液,滴加完毕保温反应13小时,反应液压滤除去固体物质,然后常压蒸馏回收乙醇,残液冷却到室温,加甲苯和水后搅拌静置分水,甲苯层干燥、压滤、蒸馏得4-氟肉桂酸乙酯;
(2)、先将无水乙醇和N-甲胺基羰基乙酸乙酯加入到反应容器中,然后在-15—5℃滴加乙醇钠的乙醇溶液,然后继续滴加4-氟肉桂酸乙酯和无水乙醇混合物,保温13小时,调节PH为5—6,冷冻,粗品析出,离心得环合物哌啶二酮粗品;
(3)、先将四氢呋喃和硼氢化钾加入到反应容器中,然后在35℃滴加环合物哌啶二酮和四氢呋喃/乙醇混合液, 然后在l5℃以下滴加三氟化硼乙醚/四氢呋喃混合液,滴毕于28℃保温反应15h结束反应,冷却到-10℃,然后滴加到盐酸中,搅拌3—4小时,压滤、滤液蒸馏,残余物加二甲苯和水于80℃温热分层,二甲苯层萃取,调节PH=9,再经搅拌、静置、分水,甲苯层干燥、压滤,滤液蒸馏,用石油醚重结晶、离心、烘干得反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶。
2.根据权利要求1所述的一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法,其特征在于:所述的步骤(1)中对氟苯甲醛和磷酰基乙酸三乙酯的质量比为1 :1.3—1.4。
3.根据权利要求1所述的一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法,其特征在于:所述的步骤(2)中4-氟肉桂酸乙酯和N-甲胺基羰基乙酸乙酯的质量比为1 :0.85—0.9。
4.根据权利要求1所述的一种反式-4-(4-氟苯基)-3-羟甲基-1-甲基哌啶的制备方法,其特征在于:所述的步骤(2)中环合物哌啶二酮粗品加入到丙酸甲酯溶解、冷却、水洗、静置分出水层萃取,有机层干燥、压滤,滤液蒸馏、抽真空,最后加入正丁醇过滤、冷却、结晶、离心,得到精品环合物哌啶二酮。
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CN104892491A (zh) * | 2015-05-06 | 2015-09-09 | 浙江海森药业有限公司 | 一种合成帕罗西汀手性中间体的方法 |
CN109020872A (zh) * | 2018-06-26 | 2018-12-18 | 浙江邦富生物科技有限责任公司 | 一种盐酸帕罗西汀关键中间体的制备方法 |
WO2022269643A1 (en) * | 2021-06-25 | 2022-12-29 | Vihita Chem Private Limited | An improved process for the preparation of intermediate for paroxetine |
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WO2022269643A1 (en) * | 2021-06-25 | 2022-12-29 | Vihita Chem Private Limited | An improved process for the preparation of intermediate for paroxetine |
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