CN103554054A - 他啶侧链双酸的制备方法 - Google Patents

他啶侧链双酸的制备方法 Download PDF

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CN103554054A
CN103554054A CN201310591307.9A CN201310591307A CN103554054A CN 103554054 A CN103554054 A CN 103554054A CN 201310591307 A CN201310591307 A CN 201310591307A CN 103554054 A CN103554054 A CN 103554054A
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acid
preparation
pyridine side
side chain
bisgallic
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CN103554054B (zh
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尹鹏
杜涵月
孙智源
李佳
孙艳丽
蔡会敏
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Guangdong Jincheng Jinsu Pharmacy Co ltd
Shandong Jincheng Medicine Chemical Co ltd
SHANDONG JINCHENG PHARMACEUTICAL CO.,LTD.
SHANDONG JINCHENG PHARMACEUTICAL GROUP CO.,LTD.
ZHONGSHAN JINCHENG DOBFAR PHARMACEUTICAL CO.,LTD.
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Shandong Jincheng Pharmaceutical & Chemical Co Ltd
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D277/00Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
    • C07D277/02Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
    • C07D277/20Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D277/32Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members 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
    • C07D277/38Nitrogen atoms
    • C07D277/40Unsubstituted amino or imino radicals

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  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

本发明属于医药中间体制备领域,具体涉及一种他啶侧链双酸的制备方法。包括以下步骤:在水中加入他啶侧链酸,调节pH至0.2-3.0,反应;然后用碱调节pH至2-4,抽滤;得到的固体加入到醇溶剂中搅拌,抽滤,烘干,得到他啶侧链双酸产品。本发明使用了酸作为反应催化剂,保证了反应的高收率,摩尔收率可以达到95%以上;得到的产品纯度高,产品检测纯度为99.8%以上;反应周期比较短,操作简单易行。

Description

他啶侧链双酸的制备方法
技术领域
本发明属于医药中间体制备领域,具体涉及一种他啶侧链双酸的制备方法。
背景技术
头孢他啶侧链双酸中文名称:(Z)-2-(2-氨基噻唑-4-基)-2-(1-羧基-1-甲基)乙氧亚氨基乙酸,本品用于合成第三代头孢菌素类抗生素头孢他啶主要原料。目前没有发现专利或者文献中有对他啶侧链双酸制备的报道。
发明内容
本发明的目的是提供一种他啶侧链双酸的制备方法,本方法简单易控,成本低,产品收率高,纯度高。
本发明所述的他啶侧链双酸的制备方法:包括以下步骤:
(1)在水中加入他啶侧链酸,调节pH至0.2-3.0,反应;
(2)然后用碱调节pH至2-4,抽滤;
(3)得到的固体加入到醇溶剂中搅拌,抽滤,烘干,得到他啶侧链双酸产品。
步骤(1)中水与他啶侧链酸的质量比为3:1-6:1;在水中加入他啶侧链酸时的温度为15-75℃。
步骤(1)中调节pH至0.2-3.0,优选调节pH至0.2-0.5;具体为在0.2-3.0个小时内加入酸溶液,其中:酸溶液为盐酸、硫酸、冰醋酸、乙二酸、氢溴酸或甲酸中一种或几种。使用酸调节pH至0.2-3.0的作用是进行酸解,酸还作为反应催化剂,保证了反应的高收率,摩尔收率可以达到95%以上。使用酸后,产品质量提高,收率提高,反应条件温和,反应周期短。
步骤(1)中反应温度为15-75℃,时间为10min-60min。
步骤(2)中用碱调节pH至2-4,pH过低时产品质量差,pH过高产品收率低;其中碱为氢氧化钠、碳酸钠、三乙胺、氨水或碳酸氢钠中的一种或者几种。
步骤(3)中所述的搅拌温度为20-60℃,搅拌时间为0.5-3小时。
步骤(3)中加入醇溶剂的作用是促进反应进行,提高产品的质量;醇溶剂为甲醇、乙醇、异丙醇、叔丁醇或正丁醇中的一种或者几种。
步骤(3)中醇溶剂与他啶侧链酸的质量比为3:1-5:1。
综上所述,本发明具有以下优点:
(1)使用了酸作为反应催化剂,保证了反应的高收率,摩尔收率可以达到95%以上;
(2)得到的产品纯度高,产品检测纯度为99.8%以上;
(3)反应周期比较短,操作简单易行。
具体实施方式
下面结合实施例对本发明做进一步说明。
实施例1
向反应釜中加入水450kg,搅拌升温至50℃,加入他啶侧链酸150kg,0.5小时内加入30kg浓度30%盐酸溶液,调节pH至0.5,在50℃继续反应50min,溶清后快速用25kg氢氧化钠调节pH至3.0,大量产品析出,抽滤后,得到他啶侧链双酸有水酸200kg,40℃加入到500kg甲醇溶剂中搅拌1小时,抽滤烘干后得到他啶侧链双酸产品119kg,收率95.1%,纯度99.81%。
实施例2
向反应釜中加入水450kg,搅拌升温至20℃,加入他啶侧链酸150kg,0.5小时内加入10kg甲酸溶液,调节PH至2.0,在20℃继续反应60min,溶清后快速用25kg碳酸钠调节PH至2.5,大量产品析出,抽滤后,得到他啶侧链双酸有水酸190kg,20℃加入到500kg甲醇溶剂中搅拌1小时,抽滤烘干后得到他啶侧链双酸产品115kg,收率91.9%,纯度99.89%。
实施例3
向反应釜中加入水450kg,搅拌升温至70℃,加入他啶侧链酸150kg,0.5小时内加入30kg浓度30%盐酸溶液,调节PH至0.2,在70℃继续反应20min,溶清后快速用25kg三乙胺调节PH=4.0,大量产品析出,抽滤后,得到他啶侧链双酸有水酸210kg,60℃加入到500kg乙醇溶剂中搅拌1小时,抽滤烘干后得到他啶侧链双酸产品122kg,收率97.49%,纯度99.88%。

Claims (9)

1.一种他啶侧链双酸的制备方法,其特征在于:包括以下步骤:
(1)在水中加入他啶侧链酸,调节pH至0.2-3.0,反应;
(2)然后用碱调节pH至2-4,抽滤;
(3)得到的固体加入到醇溶剂中搅拌,抽滤,烘干,得到他啶侧链双酸产品。
2.根据权利要求1所述的他啶侧链双酸的制备方法,其特征在于:步骤(1)中水与他啶侧链酸的质量比为3:1-6:1。
3.根据权利要求1或2所述的他啶侧链双酸的制备方法,其特征在于:步骤(1)中在水中加入他啶侧链酸时的温度为15-75℃。
4.根据权利要求1所述的他啶侧链双酸的制备方法,其特征在于:步骤(1)中调节pH至0.2-3.0为在0.2-3.0个小时内加入酸溶液,其中:酸溶液为盐酸、硫酸、冰醋酸、乙二酸、氢溴酸或甲酸中一种或几种。
5.根据权利要求1或4所述的他啶侧链双酸的制备方法,其特征在于:步骤(1)中反应温度为15-75℃,时间为10min-60min。
6.根据权利要求1所述的他啶侧链双酸的制备方法,其特征在于:步骤(2)中碱为氢氧化钠、碳酸钠、三乙胺、氨水或碳酸氢钠中的一种或者几种。
7.根据权利要求1所述的他啶侧链双酸的制备方法,其特征在于:步骤(3)中所述的搅拌温度为20-60℃,搅拌时间为0.5-3小时。
8.根据权利要求1所述的他啶侧链双酸的制备方法,其特征在于:步骤(3)中醇溶剂为甲醇、乙醇、异丙醇、叔丁醇或正丁醇中的一种或者几种。
9.根据权利要求1或8所述的他啶侧链双酸的制备方法,其特征在于:步骤(3)中醇溶剂与他啶侧链酸的质量比为3:1-5:1。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104447610A (zh) * 2014-11-21 2015-03-25 山东金城医药化工股份有限公司 高纯度头孢他啶侧链酸的制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1058593A (zh) * 1990-06-29 1992-02-12 E·R·斯奎布父子公司 具有氨基噻唑(亚氨基氧基乙酸)乙酸侧链的β-内酰胺的制备方法及中间体

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1058593A (zh) * 1990-06-29 1992-02-12 E·R·斯奎布父子公司 具有氨基噻唑(亚氨基氧基乙酸)乙酸侧链的β-内酰胺的制备方法及中间体

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
郑玉林: "头孢他啶的合成工艺改进", 《中国药物化学杂志》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104447610A (zh) * 2014-11-21 2015-03-25 山东金城医药化工股份有限公司 高纯度头孢他啶侧链酸的制备方法

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