CN102675215A - 一种2-甲基嘧啶-4-羧酸乙酯的合成方法 - Google Patents

一种2-甲基嘧啶-4-羧酸乙酯的合成方法 Download PDF

Info

Publication number
CN102675215A
CN102675215A CN2012101533610A CN201210153361A CN102675215A CN 102675215 A CN102675215 A CN 102675215A CN 2012101533610 A CN2012101533610 A CN 2012101533610A CN 201210153361 A CN201210153361 A CN 201210153361A CN 102675215 A CN102675215 A CN 102675215A
Authority
CN
China
Prior art keywords
ethyl ester
ethyl
methylpyrimidine
carboxylic acid
compound method
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.)
Pending
Application number
CN2012101533610A
Other languages
English (en)
Inventor
徐余冬
丁炬平
张仁延
余强
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.)
Cgenetech Suzhou China Co Ltd
Original Assignee
Cgenetech Suzhou China 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 Cgenetech Suzhou China Co Ltd filed Critical Cgenetech Suzhou China Co Ltd
Priority to CN2012101533610A priority Critical patent/CN102675215A/zh
Publication of CN102675215A publication Critical patent/CN102675215A/zh
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

本发明公开了一种2-甲基嘧啶-4-羧酸乙酯的合成方法,在现有文献上以2-溴嘧啶和丙二酸二乙酯,以及3-乙氧基-2-甲基丙烯酸乙酯和醋酸乙脒为原料,尝试多次未能得到目标产物。现优化合成线路,得到了合成2-甲基嘧啶-4-羧酸乙酯得方法。本发明主要对2-甲基嘧啶-4-羧酸乙酯的合成方法进行改进,降低了反应条件的苛刻性,以及简化了操作。

Description

一种2-甲基嘧啶-4-羧酸乙酯的合成方法
技术领域
本发明涉及一种2-甲基嘧啶-4-羧酸乙酯的合成工艺方法,属医药,化工技术领域。
背景技术
2-甲基嘧啶-4-羧酸乙酯是一种白色固体,是重要的医药中间体。
现有2-甲基嘧啶-4-羧酸乙酯的合成工艺,是采用以3-乙氧基-2-甲基丙烯酸乙酯,以及2-溴嘧啶、丙二酸二乙酯为原料,与醋酸乙脒反应,得到2-甲基嘧啶-4-羧酸乙酯。然而,上述工艺皆在常规实验室条件下未能得到目标产物,故修改合成路径得到现有合成方法。
发明内容
针对原有两种方法都不能行的通,本发明在以乙烯基乙醚和草酰氯单乙酯为原料的前提下,尝试了一条线路后,最终确定了本专利的工艺线路。由乙烯基乙醚和草酰氯单乙酯在吡啶中反应,用二氯甲烷和乙醚过柱得到5-乙氧基-4烯-草酸单乙酯,再与醋酸乙脒在碳酸钾,乙醇下回流得到目标产物。
本发明所述2-甲基嘧啶-4-羧酸乙酯的合成方法,是采用乙烯基乙醚和吡啶混合后在0℃下滴加草酰氯单乙酯,毕升温至室温搅拌过夜,次日直接过柱提纯得到5-乙氧基-4烯-草酸单乙酯。再加入醋酸乙脒和碳酸钾在乙醇里回流过夜后过柱得到目标产物。
上述2-甲基嘧啶-4-羧酸乙酯的合成方法,其特征在于:所述采用经简化并降低反应条件苛刻的线路,是指以3-乙氧基-2-甲基丙烯酸乙酯和醋酸乙脒,以及2-溴嘧啶和丙二酸二乙酯为原料的合成路线不能得到目标产物。
上述2-甲基嘧啶-4-羧酸乙酯的合成方法,其特征在于:所述2-甲基嘧啶-4-羧酸乙酯的合成方法制得:取7.2 g 乙烯基乙醚,9.48 g吡啶,降温至零度后,缓慢滴加16.4 g草酰氯单乙酯,滴加完后,保持相同温度,继续搅拌10分钟,体系升至室温搅拌过夜。次日直接由装好的硅胶柱上提纯得到16.43 g。5-乙氧基-4烯-草酸单乙酯,再与醋酸乙脒和碳酸钾在乙醇中回流过夜,次日过滤,旋干过柱即得2-甲基嘧啶-4-羧酸乙酯8 g。
上述以乙烯基乙醚,草酰氯单乙酯,醋酸乙脒等为原料合成2-甲基嘧啶-4-羧酸乙酯的化学反应及反应式如下:
(1)乙烯基乙醚与草酰氯单乙酯的反应方程式为:
Figure 2012101533610100002DEST_PATH_IMAGE001
(2)反应完成,粗纯化以后醋酸乙脒的反应方程式为:
具体实施方式
实施例:
所述2-甲基嘧啶-4-羧酸乙酯的合成方法制得:取7.2 g 乙烯基乙醚,9.48 g吡啶,降温至零度后,缓慢滴加16.4 g草酰氯单乙酯,滴加完后,保持相同温度,继续搅拌10min,体系升至室温搅拌过夜。次日直接由装好的硅胶柱上提纯得到16.43 g。5-乙氧基-4烯-草酸单乙酯,再与醋酸乙脒和碳酸钾在乙醇中回流过夜,次日过滤,旋干过柱即得2-甲基嘧啶-4-羧酸乙酯8 g。

Claims (4)

1.2-甲基嘧啶-4-羧酸乙酯的合成方法,是采用新的初始原料溶于吡啶后再0℃下滴加草酰氯单乙酯,并在这一温度反应10分钟后升温至室温,再经过过层析柱后得到5-乙氧基-4烯-草酸单乙酯,再由5-乙氧基-4烯-草酸单乙酯与醋酸乙脒在碳酸钾和乙醇的条件下回流过夜后,过滤旋转蒸发干,过层析柱得到目标产物2-甲基嘧啶-4-羧酸乙酯。
2.如权利要求所述2-甲基嘧啶-4-羧酸乙酯的合成方法,其特征在于:所述新的初始原料,是指以乙烯基乙醚为原料。
3.如权利要求所述2-甲基嘧啶-4-羧酸乙酯的合成方法,其特征在于:所述采用经优化并降低反应条件苛刻的线路,其中优化是指以廉价的乙烯基乙醚为原料,与草酰氯单乙酯反应得到关键的中间体-乙氧基-4烯-草酸单乙酯,再与醋酸乙脒反应得到目标产物。
4.如权利要求所述2-甲基嘧啶-4-羧酸乙酯的合成方法,其特征在于:所述2-甲基嘧啶-4-羧酸乙酯的合成方法制得:取7.2 g 乙烯基乙醚,9.48 g吡啶,降温至零度后,缓慢滴加16.4 g草酰氯单乙酯,滴加完后,保持相同温度,继续搅拌10分钟,体系升至室温搅拌过夜,次日直接由装好的硅胶柱上提纯得到16.43 g,5-乙氧基-4烯-草酸单乙酯,再与醋酸乙脒和碳酸钾在乙醇中回流过夜,次日过滤,旋干过柱即得2-甲基嘧啶-4-羧酸乙酯8 g。
CN2012101533610A 2012-05-17 2012-05-17 一种2-甲基嘧啶-4-羧酸乙酯的合成方法 Pending CN102675215A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101533610A CN102675215A (zh) 2012-05-17 2012-05-17 一种2-甲基嘧啶-4-羧酸乙酯的合成方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101533610A CN102675215A (zh) 2012-05-17 2012-05-17 一种2-甲基嘧啶-4-羧酸乙酯的合成方法

Publications (1)

Publication Number Publication Date
CN102675215A true CN102675215A (zh) 2012-09-19

Family

ID=46807836

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012101533610A Pending CN102675215A (zh) 2012-05-17 2012-05-17 一种2-甲基嘧啶-4-羧酸乙酯的合成方法

Country Status (1)

Country Link
CN (1) CN102675215A (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004111011A2 (en) * 2003-05-30 2004-12-23 Euro-Celtique S.A. Synthesis of 2-aryl pyrimidine 4-carboxylic acid amides
CN102060783A (zh) * 2010-12-06 2011-05-18 张家港市蓝迪森新材料科技有限公司 2-取代-5-硝基-4,6-二氯嘧啶的制备方法
CN102399196A (zh) * 2011-11-22 2012-04-04 太仓市运通化工厂 一种4,6-二羟基-2-甲基嘧啶的合成方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004111011A2 (en) * 2003-05-30 2004-12-23 Euro-Celtique S.A. Synthesis of 2-aryl pyrimidine 4-carboxylic acid amides
CN102060783A (zh) * 2010-12-06 2011-05-18 张家港市蓝迪森新材料科技有限公司 2-取代-5-硝基-4,6-二氯嘧啶的制备方法
CN102399196A (zh) * 2011-11-22 2012-04-04 太仓市运通化工厂 一种4,6-二羟基-2-甲基嘧啶的合成方法

Similar Documents

Publication Publication Date Title
Zhao et al. Novel μ5‐Coordination Modes of Aryl and Alkyl Ethynides and Classification of Metal–Ligand Interactions in Silver (i) Complexes
Lee et al. Role and effect of anions in the construction of silver complexes based on a pyridylimidazole ligand with L-type coordination vectors and their photoluminescence properties
Wang et al. Controlling structural topology of metal-organic frameworks with a desymmetric 4-connected ligand through the design of metal-containing nodes
CN104327078A (zh) Cdk-4/6抑制剂的新合成方法
Czakler et al. Titanium oxo/alkoxo clusters with both phosphonate and methacrylate ligands
CN105801475A (zh) 一种甲苯磺酸索拉非尼的制备方法
Caltagirone et al. Anion recognition properties of pyridine-2, 6-dicarboxamide and isophthalamide derivatives containing L-tryptophan moieties
Maiti et al. Dinuclear zinc (II) complexes with compartmental ligands: syntheses, structures, and bioactivities as artificial nuclease
CN102675215A (zh) 一种2-甲基嘧啶-4-羧酸乙酯的合成方法
CN109369608B (zh) 一种制备苯并-1,3-氧硫杂环己二烯-4-亚基胺的方法
Olyaei et al. One-pot, three-component coupling reaction: catalyst-free green synthesis of novel N-heteroaryl α-naphthylglycines
Lin et al. Assembly and properties of four new metal–organic coordination polymers with flexible bis-pyridyl-bis-amide ligands: effect of aromatic dicarboxylates and central metal ions on the structures
CN103172639A (zh) 一种基于盐酸胍的六元二环胍的制备方法
CN104356110A (zh) 一种硫诱导3,6-芳香杂环不对称取代-1,2,4,5-四嗪化合物及其合成方法
Dubey et al. Synthesis and spectral studies of some new dimeric [(μ-Cl) 2M2 (L) 2· x THF][M= Zn (II) and Hg (II)] complexes containing Schiff-base ligands
Reindl et al. Dinuclear palladium complexes of pyrazolato-bridged imidazolium-and NHC-ligands: Synthesis and characterization
CN109096091A (zh) 肉桂酸的制备方法
CN105017077B (zh) 一种亚胺酸酯衍生物的合成方法
Smuts et al. Synthesis of ditopic ligands for the selective extraction of copper (II) nitrate and crystal structures of their Cu (II) complexes
CN101333220A (zh) 一种苯并[4,5]咪唑并[1,2-а]嘧啶类衍生物的合成方法
Hussain et al. Synthesis and coordination chemistry of organotin (IV) complexes of 2, 3-methylenedioxyphenylpropenoic acid
CN103588754B (zh) 伊马替尼的制备方法
Chandrasekhar et al. Organostannoxanes containing peripheral thiomethyl groups
Yun et al. Connecting modes of linking ligands containing different terminal groups (pyridyl–amine or pyridyl–pyridyl): Preparation and structures of {[Cd (L1) 2 (OH2) 2]·(ClO4) 2·(C6H6)}∞,{[Cd (L2) 2 (ClO4) 2]·(CH3OH) 2}∞,{[Cd (L3) 2 (OH2) 2]·(ClO4) 2}∞, and [Cd (L4) 2 (CH3OH) 2 (ClO4) 2]{(m-py)–CHN–(CH3) C6H3–C6H3 (CH3)–NH2 (m= 3 (L1) or 4 (L2));(n-py)–CHN–(CH3) C6H3–C6H3 (CH3)–NCH–(n-py);(n= 3 (L3) or 4 (L4))}
Zhou et al. Complexes of unsymmetric bis-hydrazide ligands: crystal structures and properties

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120919