CN110590652A - 2-氨基-5-碘吡啶的合成方法 - Google Patents

2-氨基-5-碘吡啶的合成方法 Download PDF

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CN110590652A
CN110590652A CN201910912461.9A CN201910912461A CN110590652A CN 110590652 A CN110590652 A CN 110590652A CN 201910912461 A CN201910912461 A CN 201910912461A CN 110590652 A CN110590652 A CN 110590652A
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amino
iodopyridine
temperature
iodine
aminopyridine
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CN110590652B (zh
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蒋坤
谢雨
徐少强
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Jiangsu Hongbang Chemical Technology Co ltd
Wanxiang Technology Group Co.,Ltd.
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JIANGSU HONGBANG CHEMICAL TECHNOLOGY Co Ltd
Wanxiang Technology 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
    • C07D213/04Heterocyclic 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
    • C07D213/72Nitrogen atoms
    • C07D213/73Unsubstituted amino or imino radicals

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  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)

Abstract

本发明公开了一种2‑氨基‑5‑碘吡啶的合成方法,合成步骤如下:(1)将2‑氨基吡啶溶解于水;(2)搅拌下分3~5批加入碘,加完碘,保温2h;(3)保温结束,滴加双氧水,滴完继续保温2~3h;(4)反应完后,升温回流20~30min,后冷却过滤,滤饼用冰水漂洗后烘干,得2‑氨基‑5‑碘吡啶。本发明的合成以水为溶剂,不使用有机溶剂,反应过程安全无污染。

Description

2-氨基-5-碘吡啶的合成方法
技术领域
本发明属于有机合成技术领域,涉及一种医药中间体的合成,具体涉及2-氨基-5-碘吡啶的合成方法。
背景技术
2-氨基-5-碘吡啶别名2-氨基-5-碘代吡啶,5-碘-2-氨基吡啶,CAS:20511-12-0,为有机合成的重要中间体,主要用于医药中间体,也用于染料生产,农药生产及香料等方面。
一般工艺是2-氨基吡啶在溶剂中与碘反应合成,收率约为83%,制备过程中生成有机废液,给环境带来压力。另一常用合成路线为以2-氨基-5-溴吡啶为原料,原料成本高且不易得,合成时仍有有机废液生成。
发明内容
针对现有技术的缺陷,本发明的目的在于提供一种2-氨基-5-碘吡啶的合成方法,本发明的合成以水为溶剂,不使用有机溶剂,反应过程安全无污染。
本发明是通过以下技术方案实现的:
2-氨基-5-碘吡啶的合成方法,合成步骤如下:
(1)将2-氨基吡啶溶解于水;
(2)搅拌下分3~5批加入碘,加完碘,保温1~3h;
(3)保温结束,滴加双氧水,滴完继续保温1~4h;
(4)反应完后,升温回流20~30min,后冷却过滤,滤饼用冰水漂洗后烘干,得2-氨基-5-碘吡啶。
本发明的进一步改进方案为:
所述2-氨基吡啶、碘以及双氧水的摩尔比为1:1~1.2:0.3~1.2,所述2-氨基吡啶与水的质量比为1:2~8。
所述双氧水为质量浓度为28%~32%的双氧水水溶液。
步骤(2)加碘时保持反应液温度不超过80℃,所述保温时温度为80℃~90℃。
步骤(3)中所述保温时温度为80℃~90℃。
步骤(4)中所述冷却过滤需冷却至10℃以下再过滤。
化学反应方程式如下:
本发明的有益效果为:
本发明在合成过程中不使用有机溶剂,而是以水为溶剂,不产生有机废液,反应过程安全无污染。
本发明后处理只需通过简单的冷却过滤即可,得到的2-氨基-5-碘吡啶固体含量超过99%,收率超过84%。
具体实施方式
实施例1
(1)在装有冷凝器、温度计带有搅拌的1000ML的四口烧瓶中,加入300克水,常温加入94克2-氨基吡啶,搅拌下逐渐溶解。
(2)升温至70℃,分3批加入140克碘。加完碘在80℃-90℃下保温2小时。
(3)保温结束,滴加50克30%双氧水,滴完在80℃-90℃下保温3小时,液相检测原料2-氨基吡啶反应完全。
(4)反应完后,升温至100℃,回流20-30分钟,冷却10℃以下过滤,滤饼用冰水漂洗,烘干得淡黄色晶体,即为2-氨基-5-碘吡啶,重量185克,经液相色谱检测纯度为99.2%,收率为84.7%。
实施例2
(1)在装有冷凝器、温度计带有搅拌的1000ML的四口烧瓶中,加入400克水,常温加入94克2-氨基吡啶,搅拌下逐渐溶解。
(2)升温至80℃,分5批加入140克碘。加完碘在80℃-90℃下保温1小时。
(3)保温结束,滴加70克30%双氧水,滴完在80℃-90℃下保温3小时,液相检测原料2-氨基吡啶反应完全。
(4)反应完后,升温至100℃,回流20-30分钟,冷却5℃以下过滤,滤饼用冰水漂洗,烘干得淡黄色晶体,即为2-氨基-5-碘吡啶,重量188克,经液相色谱检测纯度为99.1%,收率为85%。
实施例3
(1)在装有冷凝器、温度计带有搅拌的1000ML的四口烧瓶中,加入500克水,常温加入94克2-氨基吡啶,搅拌下逐渐溶解。
(2)升温至60℃,分4批加入140克碘。加完碘在80℃-90℃下保温3小时。
(3)保温结束,滴加60克30%双氧水,滴完在80℃-90℃下保温4小时,液相检测原料2-氨基吡啶反应完全。
(4)反应完后,升温至100℃,回流20-30分钟,冷却0℃以下过滤,滤饼用冰水漂洗,烘干得淡黄色晶体,即为2-氨基-5-碘吡啶,重量192克,经液相色谱检测纯度为99.2%,收率为87%。

Claims (6)

1.2-氨基-5-碘吡啶的合成方法,其特征在于,合成步骤如下:
(1)将2-氨基吡啶溶解于水;
(2)搅拌下分3~5批加入碘,加完碘,保温1~3h;
(3)保温结束,滴加双氧水,滴完继续保温1~4h;
(4)反应完后,升温回流20~30min,后冷却过滤,滤饼用冰水漂洗后烘干,得2-氨基-5-碘吡啶。
2.根据权利要求1所述的2-氨基-5-碘吡啶的合成方法,其特征在于:所述2-氨基吡啶、碘以及双氧水的摩尔比为1:1~1.2:0.3~1.2,所述2-氨基吡啶与水的质量比为1:2~8。
3.根据权利要求1或2任意一项所述的2-氨基-5-碘吡啶的合成方法,其特征在于:所述双氧水为质量浓度为28%~32%的双氧水水溶液。
4.根据权利要求1所述的2-氨基-5-碘吡啶的合成方法,其特征在于:步骤(2)加碘时保持反应液温度不超过80℃,所述保温时温度为80℃~90℃。
5.根据权利要求1所述的2-氨基-5-碘吡啶的合成方法,其特征在于:步骤(3)中所述保温时温度为80℃~90℃。
6.根据权利要求1所述的2-氨基-5-碘吡啶的合成方法,其特征在于:步骤(4)中所述冷却过滤需冷却至10℃以下再过滤。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113773247A (zh) * 2021-07-23 2021-12-10 无锡海伦生物科技有限公司 一种2-氨基-5-碘吡啶的制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106432069A (zh) * 2016-09-09 2017-02-22 安徽工业大学 一种2‑氨基‑5‑氯‑吡啶的制备方法
CN107759514A (zh) * 2017-10-26 2018-03-06 苏州盖德精细材料有限公司 一种2‑氨基‑5‑氟吡啶的制备方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106432069A (zh) * 2016-09-09 2017-02-22 安徽工业大学 一种2‑氨基‑5‑氯‑吡啶的制备方法
CN107759514A (zh) * 2017-10-26 2018-03-06 苏州盖德精细材料有限公司 一种2‑氨基‑5‑氟吡啶的制备方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
AVINASH T. SHINDE等: "A Practical Iodination of Aromatic Compounds by Using Iodine and Iodic Acid", 《SYNTHETIC COMMUNICATIONS》 *
HAMA, YOSHIYUKI等: "Preparation and properties of pyridine-analog of TCNQ dianion salt", 《BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN》 *
SWEETY SINGHAL等: "A simple and improved regioselective bromination of aromatic compounds using N-methylpyrolidin-2-one hydrotribromide and aqueous hydrogen peroxide under mild reaction conditions", 《JOURNAL OF MOLECULAR CATALYSIS A: CHEMICAL》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113773247A (zh) * 2021-07-23 2021-12-10 无锡海伦生物科技有限公司 一种2-氨基-5-碘吡啶的制备方法

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