CN1152872C - 4-(3-吡啶基)-1h-咪唑的制备方法和所用的中间体 - Google Patents

4-(3-吡啶基)-1h-咪唑的制备方法和所用的中间体 Download PDF

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CN1152872C
CN1152872C CNB998084425A CN99808442A CN1152872C CN 1152872 C CN1152872 C CN 1152872C CN B998084425 A CNB998084425 A CN B998084425A CN 99808442 A CN99808442 A CN 99808442A CN 1152872 C CN1152872 C CN 1152872C
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pyridyl
alc
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R·布彻特
���ŷ�
J·拉古尔达特
J·肖尔
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D401/00Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/04Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
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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
    • C07D213/24Heterocyclic 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 substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D213/44Radicals substituted by doubly-bound oxygen, sulfur, or nitrogen atoms, or by two such atoms singly-bound to the same carbon atom
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Abstract

本发明的目的是化合物(I)的制备方法:式中,R表示氢原子或含有直至8个碳原子的烷基,该方法的特征在于,将alc代表的含有直至4个碳原子的化合物(II)不与在其中的反应介质分离而与化合物(III)RCONH2反应得到化合物(IV),再将其加热环化。

Description

4-(3-吡啶基)-1H-咪唑的制备方法和所用的中间体
本发明涉及4-(3-吡啶基)-1H-咪唑、其某些衍生物以及使用的中间产物的制备方法。
本发明的目的是通式(I)的化合物的制备方法
Figure C9980844200051
其中,R表示氢原子或含有直至8个碳原子的烷基,其特征在于,让通式(A)的化合物与醇和碱金属醇化物alc1OH/alc2OL反应,得到通式(B)的3-(2H-氮杂环丙烯-3-基)-吡啶,其中alc1和alc2相同或不同,表示含有直至4个碳原子的烷基,L表示金属钠或钾:
Figure C9980844200052
其中,OM表示容易离去基团形式的被保护羟基,
再将其不经从反应介质中分离而与选自草酸和甲酸的酸反应,得到相应的通式(II)化合物:
Figure C9980844200061
其中R的定义同前
通式(IV)化合物经环化反应得到通式(I)的化合物。
R是烷基时,其是例如甲基、乙基、正丙基、异丙基、正丁基、异丁基或叔丁基。
Alk代表例如甲基、乙基或正丙基。
在优选实施方案中,化合物(II)和(III)之间的反应发生于醇和甲酰胺的混合物中,所说的醇是甲醇、乙醇或丙醇。
式(IV)化合物的环化发生于甲酰胺中。
本发明更特别的主题是R为氢原子的通式(I)化合物的制备。
本发明更特别的主题是一种方法,其特征在于alk代表甲基。
环化反应优选在加热下进行。
4-(3-吡啶)-1H-咪唑是已知产品,例如叙述于J.Chem.Soc.753-5,1938中,该化合物可用于制备药物(cf.EP680967)。
本发明的主题还在于一种方法,其特征在于通过醇与碱金属醇盐(alk1OH/alk2OM)的作用制备通式(II)的产物,alk1和alk2可以相同或不同,代表含至多4个碳原子的烷基和M代表通式(A)化合物中的钠或钾原子,
Figure C9980844200062
OM代表保护的羟基,以便得到3-(2H-吖丙啶-3-基)吡啶,的醇混合物和甲酰胺中进行;
—通式(IV)化合物的环化在甲酰胺中进行。
本发明的更具体的目的是制备如前所定义的通式(I)化合物,其特征在于,使用R是氢原子的通式(III)化合物。
本发明的很特定的目的是一种不分离通式(IV)中间体的方法。
本发明更特别的目的是一种方法,其特征在于,将1-(3-吡啶基)-乙酮O-[(4-甲基-苯基)-磺酰基]肟与甲醇和甲醇钠反应,得到3-(2H-氮杂环丙烯-3-基)-吡啶,不用从反应介质中分离,再将其与草酸反应,得到β,β-二甲氧基-2-(3-吡啶基)-乙基]-胺,不用从反应介质中分离,再将其与甲酰胺反应,得到N-[β,β-二甲氧基-2-(3-吡啶基)-乙基]甲酰胺,不用从反应介质分离,再将其加热环化,得到所需的产物。
通式(IV)化合物是新颖的,其本身就是本发明的目的。
本发明的一个更特别的目的是N-[β,β-二甲氧基-2-(3-吡啶基)-乙基]甲酰胺。
4-(3-吡啶基)-1H-咪唑是一种已知在比如《化学协会杂志》(J.Chem.Soc.)753,5(1938)中叙述过的化合物,如在欧洲专利EP 680967中所述,可以用它来制备药物化合物。
下面的实施例说明本发明,而不对其构成限制。
制备:β,β-二甲氢基-3-吡啶-乙胺
步骤A:3-(2H-氮杂环丙烯-3-基)-吡啶
在20℃的氮气氛下,在含有400mL无水甲醇和23.45g甲醇钠的溶液里加入100g的1-(3-吡啶基)乙酮O-[(4-甲基苯基)磺酰基]-肟。在20~22℃下搅拌2小时,得到含有所需产物的悬浮液。
步骤B:β,β-二甲氧基-3-吡啶乙胺
将前面得到的悬浮液冷却到0℃,加入31.03g草酸。在0℃/+5℃下搅拌15分钟。得到一种悬浮液,将其直接用于实施例1。在分离和提纯后,得到β,β-二甲氧基-3-吡啶乙胺。
RMN CDCl3,ppm
1.03(宽m)假定为可移动的NH2Org.Synth.(1986)64,1926外,都是新的产品,它们本身都是本发明的主题。
通式(IV)的化合物是新的,和它们本身是本发明的主题。
本发明的进一步特定的主题是在试验部分叙述的通式(II)和(IV)的化合物,即
β,β-二甲氧基-3-吡啶乙胺和N-[β,β-二甲氧基-2-(3-吡啶基)乙基]甲酰胺。
以下实施例进一步阐明本发明,但不以任何方式限制本发明。
制备β,β-二甲氧基-3-吡啶乙胺
步骤A:3-[2H-吖丙啶-3-基)吡啶
在氮气氛下于20℃,将100g 1-(3-吡啶基)乙烯酮O-[(4-甲基苯基)苯磺酰基]肟导入含400ml无水甲醇和23.45g甲醇钠的溶液中。于20-22℃搅拌2小时,得到含所要产物的悬浮液
步骤B:β,β-二甲氧基-3-吡啶乙胺
将步骤A所得的悬浮液冷至0℃以下,加入31.03g草酸。于0°/+5℃搅拌15分钟。所得悬浮液原样用于实施例1中。在分离和提纯后,得到β,β-二甲氧基-3-吡啶乙胺。
NMR CDCl3ppm
1.03(宽m)假定是可变的NH2
3.02(s)
3.22(s)6H 2 OCH3
7.33(bdd,J=5和9)H5
7.80(dt,J=9和2)H4
8.59(dd,J=5和2)H6
8.73(dd,J=2和1)H2
实施例1 4-(3-吡啶基)-1H-咪唑
步骤A1:N-[β,β-二甲氧基-2-(3-吡啶基)乙基]甲酰胺
于60℃下将100ml甲酰胺加到上面制备的悬浮液中。得到悬浮液原样用于下一步。在分离和提纯后,得到所要的产物。
步骤A2:4-(3-吡啶基)-1H-咪唑
在氮气氛下于80℃加热在15ml甲酰胺中的7.2gβ,β-二甲氧基-3-吡啶乙胺。在20℃搅拌反应混合物16小时。得到所要产物(产率51%)。
NMR CDCl3 ppm
3.24(s)3.26(8)6H 2 CH3O
3.55(d,s交换后)CH2-NHCO
3.75(d,s交换后)CH2-NHCO
5.80(m)mobile H
8.21(m)mobile H
7.32(m)H5
7.64(d,s交换后)NH-CHO
8.00(d,s交换后)NH-CHO
7.75 to 7.82(m)H4
8.54(dd)8.57(dd)H6
8.68(m)8.70(dd)H2
步骤B:4-(3-吡啶基)-1H-咪唑
于125℃加热步骤A所得悬浮液同时蒸馏甲醇。继续搅拌反应介质16小时。将所得悬浮液冷至80℃,加入400ml软化水。于80℃下加入130.3g草酸。冷至60℃后于60℃下搅拌1小时,接着冷至20℃并于20℃下搅拌1小时,再冷至0℃并于0℃搅拌16小时,分离,洗涤,得到所要的草酸盐。经钾碱溶液处理,得到4-(3-吡啶基)-1H-咪唑。
NMR CDCl3 ppm
7.38(dd,J=5 and 8)H5
7.78(bs)7.80(bs)H2′H5
8.12(bd,J=8)H4
8.41(dd,J=2 and 5)H6
9.03(bs)H2
12.36(宽m)可流动的H

Claims (7)

1.通式(I)的化合物的制备方法
Figure C9980844200021
其中,R表示氢原子或含有直至8个碳原子的烷基,其特征在于,让通式(A)的化合物与醇和碱金属醇化物alc1OH/alc2OL反应,得到通式(B)的3-(2H-氮杂环丙烯-3-基)-吡啶,其中alc1和alc2相同或不同,表示含有直至4个碳原子的烷基,L表示金属钠或钾:
其中,OM表示易离去基团形式的被保护羟基,
再将其不经从反应介质中分离而与选自草酸和甲酸的酸反应,得到相应的通式(II)化合物:
Figure C9980844200031
其中,alc是1~4个碳原子的烷基,再不经与反应介质分离而与通式(III)的化合物反应,得到通式(IV)的化合物:
           RCONH2             (III)
其中,R具有如前所述的意义,
Figure C9980844200032
其中,R具有如前所述的意义,将其加热环化,得到所需的通式(I)化合物。
2.如权利要求1的方法,其特征在于,使用R表示氢原子的通式(III)化合物。
3.如权利要求1的方法,其特征在于,alc各自表示相同的烷基。
4.如权利要求1的方法,其特征在于,操作时不用分离通式(IV)的中间产物。
5.如权利要求1~4中任何一项的制备方法,其特征在于,将1-(3-吡啶基)-乙酮O-[(4-甲基苯基)-磺酰基]肟与甲醇和甲醇钠反应,得到3-(2H-氮杂环丙烯-3-基)-吡啶,不用从反应介质中分离,再将其与草酸反应,得到β,β-二甲氧基-2-(3-吡啶基)-乙基]胺,不用从反应介质中分离,再将其与甲酰胺反应,得到N-[β,β-二甲氧基-2-(3-吡啶基)-乙基]甲酰胺,不用与反应介质分离,再将其加热环化,得到4-(3-吡啶基)-1H-咪唑。
6.如权利要求1所定义的通式(IV)化合物作为一种新化合物。
7.如权利要求5所定义的N-[β,β-二甲氧基-2-(3-吡啶基)-乙基]甲酰胺作为一种新化合物。
CNB998084425A 1998-07-09 1999-07-08 4-(3-吡啶基)-1h-咪唑的制备方法和所用的中间体 Expired - Fee Related CN1152872C (zh)

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US6649768B1 (en) 2002-12-04 2003-11-18 Sumika Fine Chemicals Co., Ltd. Production methods of imidazole compound and salt thereof and intermediates therefor
DE10305391A1 (de) * 2003-02-11 2004-08-19 Aventis Pharma Deutschland Gmbh Verfahren zur Herstellung von Pyridin-substituierten Aminoketal-Derivaten
US20080188527A1 (en) * 2003-12-23 2008-08-07 Cashman John R Synthetic Compounds and Derivatives as Modulators of Smoking or Nicotine Ingestion and Lung Cancer
TWI387592B (zh) * 2005-08-30 2013-03-01 Novartis Ag 經取代之苯并咪唑及其作為與腫瘤形成相關激酶之抑制劑之方法
JP2006316049A (ja) * 2006-04-11 2006-11-24 Tanabe Seiyaku Co Ltd 2,2−ジアルコキシエチルアミン化合物およびその製造方法
BR112013009823A2 (pt) 2010-10-22 2016-07-05 Bayer Ip Gmbh novos compostos heterocíclicos como pesticidas
KR101898364B1 (ko) 2014-05-22 2018-09-12 에프. 호프만-라 로슈 아게 인돌린-2-온 및 1,3-다이하이드로-피롤로[3,2-c]피리딘-2-온 유도체

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US4302464A (en) * 1980-10-16 1981-11-24 Pfizer Inc. Imidazolylpyridine therapeutic agents
JPS57136573A (en) * 1981-02-17 1982-08-23 Sagami Chem Res Center Preparation of imidazole compound
JPH02145572A (ja) * 1988-11-21 1990-06-05 Zhongguo Yixuekexueyuan Yaowo Yanjiusuo N−置換アミド類
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AR016733A1 (es) 2001-07-25
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AU4625199A (en) 2000-02-01
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PT1095035E (pt) 2010-06-08
CA2337270C (fr) 2009-11-24
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