CN113024456B - 一种2-氯烟酸的制备方法 - Google Patents

一种2-氯烟酸的制备方法 Download PDF

Info

Publication number
CN113024456B
CN113024456B CN202110203234.6A CN202110203234A CN113024456B CN 113024456 B CN113024456 B CN 113024456B CN 202110203234 A CN202110203234 A CN 202110203234A CN 113024456 B CN113024456 B CN 113024456B
Authority
CN
China
Prior art keywords
acid
hydroxy
pyridine
sodium
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110203234.6A
Other languages
English (en)
Other versions
CN113024456A (zh
Inventor
陈月霞
肖石基
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Pilot Pharmacy Co ltd
Original Assignee
Jiangsu Pilot Pharmacy Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Pilot Pharmacy Co ltd filed Critical Jiangsu Pilot Pharmacy Co ltd
Priority to CN202110203234.6A priority Critical patent/CN113024456B/zh
Publication of CN113024456A publication Critical patent/CN113024456A/zh
Application granted granted Critical
Publication of CN113024456B publication Critical patent/CN113024456B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C07D213/04Heterocyclic 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
    • C07D213/78Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D213/79Acids; Esters
    • C07D213/803Processes of preparation
    • 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
    • C07D213/04Heterocyclic 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
    • C07D213/78Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D213/79Acids; Esters
    • C07D213/80Acids; Esters in position 3

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)

Abstract

本发明涉及一种2‑氯烟酸的制备方法,在有机溶剂中,一定温度下以2‑羟基吡啶经由羧基化、氯化等二步反应得到产物2‑氯烟酸。本发明方法原料来源多且成本优势明显,制备方法更加安全、方便,总收率高且三废较少,特别是能够避开三氯氧膦或三光气的使用,有利于工业化。

Description

一种2-氯烟酸的制备方法
技术领域
本发明涉及一种2-氯烟酸的制备方法,具体涉及一种以2-羟基吡啶经由羧基化、氯化等二步反应得到产物2-氯烟酸的方法。
背景技术
2-氯烟酸是医药和农药中间体,在农药方面,可用于合成除草剂烟嘧磺隆、吡氟酰草胺、杀菌剂啶酰菌胺等,在医药方面,可用于合成抗艾滋病药奈韦拉平、抗抑郁药米氮平、消炎药普拉洛芬、抗炎镇痛药尼氟灭酸和烟甲灭酸等。文献中报道的合成方法主要有两种:一是多步环合法合成,过程复杂且收率不稳定,用到三光气或者三氯氧膦为原料,由于全国园区限制使用,其使用受限制并且三废较多不好控制;二是采用烟酸氧化、三氯氧膦氯化工艺合成,过程中同样采用易产生大量含磷废水的三氯氧膦,很难放量至生产阶段。
发明内容
本发明的目的是克服现有技术的缺陷,提供一种2-氯烟酸的制备方法。
实现本发明目的的技术方案是:一种2-氯烟酸的制备方法,包括以下步骤:
(1)在有机溶剂中,一定温度下加入2-羟基-吡啶和碱、二氧化碳带压羧基化反应得到产物2-羟基烟酸;
(2)在有机溶剂中,一定温度下加入2-羟基-烟酸和氯化试剂氯化化反应得到产物2-氯烟酸;
步骤(1)、步骤(2)的反应式为:
Figure BDA0002948753290000011
Figure BDA0002948753290000021
上述技术方案包括以下步骤:
(1)在氮气保护下向反应容器中依次加入有机溶剂、2-羟基-吡啶、碱、二氧化碳,搅拌均匀后升至设定温度、设定压力;在此温度下保温至总物料中2-羟基-吡啶液相色谱归一含量<1%;降温、酸洗结晶烘干得到2-羟基烟酸;
(2)在氮气保护下向反应容器中依次加入有机溶剂、2-羟基烟酸、氯化试剂,搅拌均匀后升至设定温度;在此温度下保温至总物料中2-羟基烟酸液相色谱归一含量<1%;降温、碱洗、结晶烘干得到2-氯烟酸。
上述技术方案步骤(1)中,所述2-羟基-吡啶和所述碱的摩尔比为1:1-10,所述有机溶剂的用量和所述2-羟基-吡啶的摩尔比为1-10:1,所述二氧化碳的压力为0.1MPa-6MPa;步骤(2)中,所述的2-羟基烟酸和所述氯化试剂的摩尔比为1:1-10,所述有机溶剂的用量和所述2-羟基烟酸的摩尔比为1-10:1。
上述技术方案步骤(1)、步骤(2)中,所述设定温度为20-200℃。
上述技术方案步骤(1)、步骤(2)中,所述有机溶剂为卤代烃类溶剂、芳香族类溶剂、醚类溶剂、酯类溶剂、醇类溶剂、含杂原子的强极性溶剂中的任意一种。
上述技术方案步骤(1)中,所述碱为碳酸钾、碳酸钠、磷酸钾、磷酸氢二钾、碳酸氢钠、醋酸钠、氢氧化钠、氢氧化钾、氢化钠、氟化钾、吡啶、三乙胺中的任意一种。
上述技术方案步骤(2)中,所述氯化试剂为氯气、氯化氢、二氯亚砜、氯化铜、氯化铁、次氯酸钠、亚氯酸钠中的任意一种。
较优地,上述技术方案所述设定温度为140-190℃。
上述技术方案所述卤代烃类溶剂为二氯甲烷、二氯乙烷、氯仿中的一种或多种,所述芳香族类溶剂为氯苯、甲苯、二甲苯中的一种或多种,所述醚类溶剂为四氢呋喃,所述酯类溶剂为乙酸甲酯、乙酸乙酯中的一种或两种,所述醇类溶剂为甲醇、乙醇、异丙醇中的一种或多种,所述含杂原子的强极性溶剂DMF、DMA、DMSO、NMP、环丁砜、DMI中的一种或多种。
采用上述技术方案后,本发明具有以下积极的效果:
本发明提供一种2-氯烟酸的制备方法,在有机溶剂中,一定温度下以2-羟基吡啶经由羧基化、氯化等二步反应得到产物2-氯烟酸。本发明方法原料来源多且成本优势明显,制备方法更加安全、方便,总收率高且三废较少,特别是能够避开三氯氧膦或三光气的使用,有利于工业化。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。
(实施例1)制备2-羟基烟酸
小试制备目标产物:
500mL高压釜中投入2-羟基-吡啶19g(0.20mol)、碳酸钾55.2g(0.4mol)、NMP100g,加热搅拌,设定二氧化碳0.6MP,升温至180℃反应5h,降温,泄压后减压回收NMP,回收率95%,加入50mL水,调pH=2后搅拌结晶、抽滤得>98%的目标物2-羟基烟酸23.6g,收率85%。
(实施例2)制备2-羟基烟酸
中试制备目标产物:
3000L的不锈钢高压反应釜投入190kg2-羟基-吡啶、552kg碳酸钾、600kgNMP、设定二氧化碳0.8MPa,缓慢升温至180℃反应5h,降温,泄压后减压回收NMP,回收率93%;回收毕加入水500kg,用浓盐酸调节pH=2,20℃搅拌30min离心得到>98%的目标物2-羟基烟酸220kg,收率83%。
(实施例3)制备2-氯烟酸
小试制备目标产物:
500mL反应瓶中投入2-羟基烟酸27.8g(0.20mol)、二氯亚砜14.2g(0.24mol)、二氯乙烷100g,加热搅拌回流,反应4h,先常压、后减压回收含多余二氯亚砜的二氯乙烷,可以直接套用,回收率95%,降温加入50mL水,调pH=7后搅拌结晶、抽滤得>97%的目标物2-氯烟酸27.6g,收率88%。
(实施例4)制备2-氯烟酸
中试制备目标产物:
3000L的搪瓷反应釜投入278kg2-羟基烟酸、142kg二氯亚砜、600kg二氯乙烷,加热搅拌回流,反应4h,先常压、后减压回收含多余二氯亚砜的二氯乙烷,可以直接套用,回收率92%;回收毕加入水500kg,用氢氧化钠调节pH=7,20℃搅拌30min离心得到>97%的目标物2-氯烟酸265kg,收率85%。
以上所述的具体实施例,对本发明的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本发明的具体实施例而已,并不用于限制本发明,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (3)

1.一种2-氯烟酸的制备方法,其特征在于,包括以下步骤:
(1)在氮气保护下向反应容器中依次加入含杂原子的强极性溶剂、2-羟基-吡啶、碱、二氧化碳,搅拌均匀后升至设定温度140-190℃、设定二氧化碳的压力为0.1MPa-6MPa;在此温度下保温至总物料中2-羟基-吡啶液相色谱归一含量<1%;降温、酸洗结晶烘干得到2-羟基烟酸;所述含杂原子的强极性溶剂为DMF、DMA、DMSO、NMP、环丁砜、DMI中的一种或多种,所述碱为碳酸钾、碳酸钠、磷酸钾、磷酸氢二钾、碳酸氢钠、醋酸钠、氢氧化钠、氢氧化钾、氢化钠、氟化钾、吡啶、三乙胺中的任意一种;
(2)在氮气保护下向反应容器中依次加入卤代烃类溶剂、2-羟基烟酸、氯化试剂,搅拌均匀后升至140-190℃;在此温度下保温至总物料中2-羟基烟酸液相色谱归一含量<1%;降温、碱洗、结晶烘干得到2-氯烟酸,所述卤代烃类溶剂为二氯甲烷、二氯乙烷、氯仿中的一种或多种;
步骤(1)、步骤(2)的反应式为:
Figure 661755DEST_PATH_IMAGE001
2.根据权利要求1所述的一种2-氯烟酸的制备方法,其特征在于:步骤(1)中,所述2-羟基-吡啶和所述碱的摩尔比为1:1-10,所述含杂原子的强极性溶剂的用量和所述2-羟基-吡啶的摩尔比为1-10:1,步骤(2)中,所述的2-羟基烟酸和所述氯化试剂的摩尔比为1:1-10,所述卤代烃类溶剂的用量和所述2-羟基烟酸的摩尔比为1-10:1。
3.根据权利要求1所述的一种2-氯烟酸的制备方法,其特征在于:步骤(2)中,所述氯化试剂为氯气、氯化氢、二氯亚砜、氯化铜、氯化铁、次氯酸钠、亚氯酸钠中的任意一种。
CN202110203234.6A 2021-02-23 2021-02-23 一种2-氯烟酸的制备方法 Active CN113024456B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110203234.6A CN113024456B (zh) 2021-02-23 2021-02-23 一种2-氯烟酸的制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110203234.6A CN113024456B (zh) 2021-02-23 2021-02-23 一种2-氯烟酸的制备方法

Publications (2)

Publication Number Publication Date
CN113024456A CN113024456A (zh) 2021-06-25
CN113024456B true CN113024456B (zh) 2022-05-13

Family

ID=76460952

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110203234.6A Active CN113024456B (zh) 2021-02-23 2021-02-23 一种2-氯烟酸的制备方法

Country Status (1)

Country Link
CN (1) CN113024456B (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117143013A (zh) * 2023-11-01 2023-12-01 苏州开元民生科技股份有限公司 一种2-氯烟酸的合成方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101243083A (zh) * 2005-06-17 2008-08-13 詹森药业有限公司 萘啶化合物

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101243083A (zh) * 2005-06-17 2008-08-13 詹森药业有限公司 萘啶化合物

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Novel naphthyridines are histamine H3 antagonists and serotonin reuptake transporter inhibitors;Michael A. Letavic;《Bioorganic & Medicinal Chemistry Letters》;20070204;第2566-2569页 *
Structure, vibrational spectra and DFT characterization of the intra- and inter-molecular interactions in 2-hydroxy-5-methylpyridine-3-carboxylic acid – Normal modes of the eight-membered HB ring;P. Godlewska,等;《Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy》;20131010;第304-313页 *

Also Published As

Publication number Publication date
CN113024456A (zh) 2021-06-25

Similar Documents

Publication Publication Date Title
CN113024456B (zh) 一种2-氯烟酸的制备方法
CN110818622B (zh) 一种2,3-二氯吡啶的制备方法
CN109280026A (zh) 一种2,3-二氯吡啶的制备方法
CN109232537B (zh) 一种沃诺拉赞的制备方法
CN103694094B (zh) 一种5-氯-2-戊酮的制备方法
CN108689866B (zh) 一种(r)-3-氨基丁醇的合成方法
CN103539662A (zh) 一种2-甲基-5-碘苯甲酸的制备及回收方法
CN111233644B (zh) 一种金刚烷酮的合成和提取方法
CN110606819A (zh) 一种1,2,3,6-四氢邻苯二甲酰亚胺的生产方法
CN114369099B (zh) 一种液相氧化制备均苯四甲酸二酐的方法
CN113480502A (zh) 一种糠酸的制备方法
CN110734398B (zh) 一种新的2-氯代烟酸的制备方法
CN113387329A (zh) 一种低成本高效制备一氯化碘的方法及得到的一氯化碘
CN107739343B (zh) 一种生产精喹禾灵的环保型工艺
CN112624915A (zh) 一种制备2,5-二羟基对苯二甲酸(dhta)的方法
CN101648912B (zh) 一种4-硝基-3,5-二甲基吡啶-n-氧化物的连续化制备方法
CN110642774A (zh) 一种1,2,3,6-四氢邻苯二甲酰亚胺的制备方法
CN101899012A (zh) 一种阿昔莫司合成工艺改进方法
CN107417637A (zh) 一种合成异噁唑草酮的方法
CN115991686B (zh) 一种制备2,5-呋喃二甲酸的方法
CN109651244A (zh) 一种烟酸的制备方法
CN115819369B (zh) 一种中间体4-甲基噻唑的制备工艺
CN111153853B (zh) 一种2-氯烟酸的制备方法
CN106187867B (zh) 一种2-硝基-5-溴吡啶的制备方法
CN108947950A (zh) 一种天然麦芽酚的制备方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant