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CN104557692B - 一种泮托拉唑中间体2-氯甲基-3,4-二甲氧基吡啶盐酸盐的制备方法 - Google Patents

一种泮托拉唑中间体2-氯甲基-3,4-二甲氧基吡啶盐酸盐的制备方法 Download PDF

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CN104557692B
CN104557692B CN201410823414.4A CN201410823414A CN104557692B CN 104557692 B CN104557692 B CN 104557692B CN 201410823414 A CN201410823414 A CN 201410823414A CN 104557692 B CN104557692 B CN 104557692B
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CN104557692A (zh
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董良军
孙继国
刘杰
国建辉
甲宗青
杨大伟
王海鹏
王洪明
侯俊杰
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SHOUGUANG FUKANG PHARMACEUTICAL CO Ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D213/00Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/89Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members with hetero atoms directly attached to the ring nitrogen atom
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D213/00Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/62Oxygen or sulfur atoms
    • C07D213/69Two or more oxygen atoms

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Abstract

本发明属于药品技术领域,具体涉及一种泮托拉唑中间体2‑氯甲基‑3,4‑二甲氧基吡啶盐酸盐的制备方法。由3‑羟基‑2‑甲基‑4‑吡喃酮为起始原料,只需五步反应即可得泮托拉唑中间体2‑氯甲基‑3,4‑二甲氧基吡啶盐酸盐,减少了反应步骤,缩短了反应周期,提高工作效率,且提高了收率。

Description

一种泮托拉唑中间体2-氯甲基-3,4-二甲氧基吡啶盐酸盐的 制备方法
技术领域
本发明属于药品技术领域,具体涉及一种泮托拉唑中间体2-氯甲基-3,4-二甲氧基吡啶盐酸盐的制备方法。
背景技术
现有技术中泮托拉唑中间体2-氯甲基-3,4-二甲氧基吡啶盐酸盐的制备方法,一般由3-羟基-2-甲基-4-吡喃酮为起始原料,经过醚化、氮化、氯代、氧化、甲氧化、乙酸化水解、氯化七步完成,反应复杂、副产物较多、收率低;原料中有三氯氧磷,甲醇钠危险品的使用,安全性较低。
发明内容
本发明针对现有技术中存在的缺点,提出一种新的制备方法,由3-羟基-2-甲基-4-吡喃酮为起始原料,只需五步反应即可得泮托拉唑中间体2-氯甲基-3,4-二甲氧基吡啶盐酸盐,减少了反应步骤,缩短了反应周期,提高工作效率,且提高了收率。
本发明的合成路线如下:
反应步骤如下:
(1)3-羟基-2-甲基-4-吡啶酮的制备
反应瓶中加入3-羟基-2-甲基-4-吡喃酮、溶剂、N原子置换试剂,20~100℃反应5h,后降温至0℃,抽滤得3-羟基-2-甲基-4-吡啶酮。
(2)3,4-二甲氧基-2-甲基吡啶的制备
反应瓶中加入3-羟基-2-甲基-4-吡啶酮、水、氢氧化钾、硫酸二甲酯,0~100℃反应20h,加入二氯甲烷萃取,减压蒸馏二氯甲烷层至干得3,4-二甲氧基-2-甲基吡啶。
(3)3,4-二甲氧基-2-甲基吡啶氮氧化物
反应瓶中加入3,4-二甲氧基-2-甲基吡啶、冰醋酸,钨酸钠,0~50℃滴加双氧水(50%),后反应4h,减压蒸馏至干。加入适量甲醇稀碱液调pH7~8,抽滤,滤液减压蒸干得3,4-二甲氧基-2-甲基吡啶氮氧化物。
(4)2-羟甲基-3,4-二甲氧基吡啶的制备
反应瓶中加入3,4-二甲氧基-2-甲基吡啶氮氧化物,醋酐,0~140℃反应4h,减压蒸馏至干,加水,碱液调pH8~9,加入氢氧化钠20~90℃反应4h,用二氯甲烷萃取,减压蒸干得2- 羟甲基-3,4-二甲氧基吡啶。
(5)2-氯甲基-3,4-二甲氧基吡啶盐酸盐
反应瓶中加入2-羟甲基-3,4-二甲氧基吡啶、二氯甲烷,氯化亚砜,反应4h,减压蒸干二氯甲烷,加入无水乙醇溶解,降温至5℃以下抽滤,得2-氯甲基-3,4-二甲氧基吡啶盐酸盐。
本发明的特点是:由3-羟基-2-甲基-4-吡喃酮反应至3,4-二甲氧基-2-甲基吡啶氮氧化物仅需三步反应;第一步3-羟基-2-甲基-4-吡啶酮的制备方法中,溶剂为水、甲醇、氨水中的一种,N原子置换试剂为碳酸铵、碳酸氢铵、或通入氨气中的一种;第三步3,4-二甲氧基-2-甲基吡啶氮氧化物的制备方法中,氧化剂为间氯过氧苯甲酸,三氟过氧乙酸,过氧乙酸,次氯酸钠中的一种。
本发明的优点是:
1.减少了反应步骤,由七步缩短到五步,缩短了反应周期,提高工作效率,且提高了收率。
2.杜绝了三氯氧磷,甲醇钠危险品的使用。
具体实施方式
实施例1:3-羟基-2-甲基-4-吡啶酮的制备。
反应瓶中加入40g 3-羟基-2-甲基-4-吡喃酮,200g氨水(20%),缓慢升温至溶解,40℃保温2h,缓慢加入30g碳酸铵,40℃保温2h,缓慢加入62g碳酸铵,40℃保温3h,缓慢升温至回流并保持回流5h,后降温至0℃,抽滤并用少量水淋洗,烘干得38g 3-羟基-2-甲基-4-吡啶酮 (收率95.7%);MS:m/z=125.2[M]+.1H NMR([D6]DMSO,400Hz):δ2.17(s,3H,CH3),6.07–6.10(d,1H,5-H),7.38–7.57(d,1H,6-H),11.4(s,1H,NH)。
实施例2:3-羟基-2-甲基-4-吡啶酮的制备。
反应瓶中加入40g3-羟基-2-甲基-4-吡喃酮,120g甲醇,缓慢升温至溶解,40℃缓慢加入 120g碳酸氢铵,40℃保温2h,缓慢加入90g碳酸氢铵,40℃保温3h,缓慢升温至回流并保持回流5h,后降温至-10℃,抽滤并用少量冰甲醇淋洗,烘干得25g3-羟基-2-甲基-4-吡啶酮(收率 63.1%);MS:m/z=125.2[M]+.1H NMR([D6]DMSO,400Hz):δ2.17(s,3H,CH3),6.07–6.10(d,1H,5-H),7.38–7.57(d,1H,6-H),11.4(s,1H,NH)。
实施例3:3-羟基-2-甲基-4-吡啶酮的制备。
反应瓶中加入40g 3-羟基-2-甲基-4-吡喃酮,100ml水,升温至溶解,40℃缓慢加入153g 碳酸氢铵,40℃保温3h,缓慢加入90g碳酸氢铵,40℃保温5h,缓慢升温至回流并保持回流5h,后降温至0℃,抽滤并用少量水淋洗,烘干得30g 3-羟基-2-甲基-4-吡啶酮(收率75.6%); MS:m/z=125.2[M]+.1H NMR([D6]DMSO,400Hz):δ2.17(s,3H,CH3), 6.07–6.10(d,1H,5-H),7.38–7.57(d,1H,6-H),11.4(s,1H,NH)。
实施例4:3-羟基-2-甲基-4-吡啶酮的制备。
反应瓶中加入40g3-羟基-2-甲基-4-吡喃酮,120g甲醇,缓慢升温至溶解,40℃缓慢加入 100g碳酸铵,40℃保温2h,缓慢加入70g碳酸铵,40℃保温3h,60℃保温2h,缓慢升温至回流并保持回流5h,后降温至-10℃,抽滤并用少量冰甲醇淋洗,烘干得30g3-羟基-2-甲基-4-吡啶酮(收率75.8%);MS:m/z=125.2[M]+.1H NMR([D6]DMSO,400Hz):δ2.17(s,3H,CH3), 6.07–6.10(d,1H,5-H),7.38–7.57(d,1H,6-H),11.4(s,1H,NH)。
实施例5:3,4-二甲氧基-2-甲基吡啶的制备。
反应瓶中加入38g 3-羟基-2-甲基-4-吡啶酮,90g水,35g氢氧化钾搅拌溶解,10~20℃滴加75g硫酸二甲酯,加完保温20h,加入80g二氯甲烷搅拌15分钟后分层,水层用20g二氯甲烷搅拌15分钟后分层,合并二氯甲烷层,减压蒸馏至干得油状物44g 3,4-二甲氧基-2-甲基吡啶;1H NMR(CDCl3,400Hz):δ2.46(s,3H,CH3),3.3.79(s,3H,OCH3),3.86(s,3H,OCH3),6.18(d,1H,5-H),8.11(d,1H,6-H)。
实施例6:3,4-二甲氧基-2-甲基吡啶氮氧化物的制备。
反应瓶中加入44g 3,4-二甲氧基-2-甲基吡啶,50g冰醋酸,0.2g钨酸钠搅拌溶解,40~45 ℃滴加35g双氧水(50%),加完缓慢升温至95℃保温4h,减压蒸馏至干。加入90g甲醇稀碱液调pH7~8,抽滤10g甲醇洗料,滤液减压蒸干得45g3,4-二甲氧基-2-甲基吡啶氮氧化物(收率 92.6%);mp:112-113℃;1H NMR(CDCl3,400Hz):δ2.50(s,3H,CH3),3.85(s,3H,OCH3),3.93 (s,3H,OCH3),6.71(d,1H,5-H),8.10(d,1H,6-H)。
实施例7:3,4-二甲氧基-2-甲基吡啶氮氧化物的制备。
反应瓶中加入44g3,4-二甲氧基-2-甲基吡啶,50g冰醋酸,搅拌溶解,40~45℃滴加45g 过氧乙酸,加完保温24h,减压蒸馏至干。加入90g甲醇稀碱液调pH7~8,抽滤10g甲醇洗料,滤液减压蒸干得35g3,4-二甲氧基-2-甲基吡啶氮氧化物(收率72%);mp:112-113℃;1H NMR (CDCl3,400Hz):δ2.50(s,3H,CH3),3.85(s,3H,OCH3),3.93(s,3H,OCH3),6.71(d,1H,5-H), 8.10(d,1H,6-H)。
实施例8:2-羟甲基-3,4-二甲氧基吡啶的制备。
反应瓶中加入45g 3,4-二甲氧基-2-甲基吡啶氮氧化物,132g醋酐,缓慢升温至回流,保持回流4h,减压蒸干醋酐加水150g,碱液调pH8~9,加入20g氢氧化钠升温至80℃,保温4h,降温至25~30℃,用二氯甲烷100g+100g+70g萃取,减压蒸干得41g2-羟甲基-3,4-二甲氧基吡啶(收率91%);mp:94-95℃;1H NMR(CDCl3,400Hz):δ3.85(s,3H,OCH3),3.93(s,3H,OCH3), 4.76(s,2H,CH2O),6.82(d,1H,5-H),8.22(d,1H,6-H)。
实施例9:2-氯甲基-3,4-二甲氧基吡啶盐酸盐的制备。
反应瓶中加入41g 2-羟甲基-3,4-二甲氧基吡啶,100g二氯甲烷,搅拌溶解,0~5℃缓慢滴加30g氯化亚砜,然后缓慢升温至10~15℃,保温2h,减压蒸干二氯甲烷,加入90g无水乙醇,降温至0℃抽滤,烘干得51g2-氯甲基-3,4-二甲氧基吡啶盐酸盐(收率93.9%);mp:157-158 ℃;1H NMR(CDCl3,400 Hz):δ4.09(s,3H,OCH3),4.23(s,3H,OCH3),5.06(s,2H,CH2Cl), 7.56(d,1H,5-H),8.56(d,1H,6-H)。

Claims (3)

1.一种泮托拉唑中间体2-氯甲基-3,4-二甲氧基吡啶盐酸盐的制备方法,其特征在于,合成路线为:
包括如下步骤:
(1)3-羟基-2-甲基-4-吡啶酮的制备
反应瓶中加入3-羟基-2-甲基-4-吡喃酮、溶剂、N原子置换试剂,20~100℃反应5h,后降温至0℃,抽滤得3-羟基-2-甲基-4-吡啶酮;
(2)3,4-二甲氧基-2-甲基吡啶的制备
反应瓶中加入3-羟基-2-甲基-4-吡啶酮、水、氢氧化钾、硫酸二甲酯,0~100℃反应20h,加入二氯甲烷萃取,减压蒸馏二氯甲烷层至干得3,4-二甲氧基-2-甲基吡啶;
(3)3,4-二甲氧基-2-甲基吡啶氮氧化物
反应瓶中加入3,4-二甲氧基-2-甲基吡啶、冰醋酸,钨酸钠,0~50℃滴加氧化剂50%的双氧水,后反应4h,减压蒸馏至干,加入适量甲醇稀碱液调pH7~8,抽滤,滤液减压蒸干得3,4-二甲氧基-2-甲基吡啶氮氧化物;
(4)2-羟甲基-3,4-二甲氧基吡啶的制备
反应瓶中加入3,4-二甲氧基-2-甲基吡啶氮氧化物,醋酐,0~140℃反应4h,减压蒸馏至干,加水,碱液调pH8~9,加入氢氧化钠20~90℃反应4h,用二氯甲烷萃取,减压蒸干得2-羟甲基-3,4-二甲氧基吡啶;
(5)2-氯甲基-3,4-二甲氧基吡啶盐酸盐
反应瓶中加入2-羟甲基-3,4-二甲氧基吡啶、二氯甲烷,氯化亚砜,反应4h,减压蒸干二氯甲烷,加入无水乙醇溶解,降温至5℃以下抽滤,得2-氯甲基-3,4-二甲氧基吡啶盐酸盐。
2.如权利要求1所述的2-氯甲基-3,4-二甲氧基吡啶盐酸盐的制备方法,其特征在于,3-羟基-2-甲基-4-吡喃酮反应至3,4-二甲氧基-2-甲基吡啶氮氧化物仅需三步反应。
3.如权利要求1所述的2-氯甲基-3,4-二甲氧基吡啶盐酸盐的制备方法,其特征在于,第一步3-羟基-2-甲基-4-吡啶酮的制备方法中,溶剂为水、甲醇、氨水中的一种,N原子置换试剂为碳酸铵、碳酸氢铵、或通入氨气中的一种。
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CN110642780B (zh) * 2019-09-30 2022-10-18 安徽金禾实业股份有限公司 一种提纯黄色吡啶盐酸盐的方法
CN111018838B (zh) * 2019-11-25 2022-12-27 重庆东寰科技开发有限公司 吡咯烷基二氨基嘧啶氮氧化物的合成方法
CN113979930A (zh) * 2021-11-03 2022-01-28 瑞孚信江苏药业股份有限公司 一锅法制备2-氯甲基-3,4-二甲氧基吡啶盐酸盐的方法

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Pyridones as Potential Antitumor Agents Ⅱ:4 - Pyridones and Bioisosteres of 3-Acetoxy-2-pyridone;DENG R. HWANG 等;《Journal of Pharmaceutical Sciences》;19800930;第69卷(第9期);第1074-1076页 *
Structure of 5-Hydroxy-2-hydrogymethyl-4- pyridones;Kimiaki IMafuku 等;《BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN》;19791231;第52卷(第1期);第107-110页 *
Structure-Activity Relationship of Omeprazole and Analogues as Helicobacter pylori Urease Inhibitors;Thomas C. Kuhler 等;《J. Med. Chem.》;19951231;第38卷;第4906-4916页 *
泮托拉唑钠合成工艺研究;宋伟国;《中国优秀硕士学位论文全文数据库 工程科技I辑》;20080815(第08期);第13页反应式、第11页第3段 *

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