CN1056139C - 1-(杂)芳基-3-羟基吡唑的制备 - Google Patents
1-(杂)芳基-3-羟基吡唑的制备 Download PDFInfo
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- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
- C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole 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
- C07D231/18—One oxygen or sulfur atom
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- C—CHEMISTRY; METALLURGY
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
- C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole 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
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Abstract
本发明涉及在溶剂中在碱的存在下从式II丙炔酸酯和式III(杂)芳基肼制备式I1-(杂)芳基-3-羟基吡唑的方法,它包括首先在溶剂中将II与III混合,然后用碱在0-60℃下处理该混合物。式I、II和III以下(其中各基团和符号定义见说明书):
Description
本发明涉及在溶剂中在碱的存在下从式II丙炔酸酯和式III(杂)芳基肼制备式I1-(杂)芳基-3-羟基吡唑的方法,式I为:式中R是未取代的或取代的芳香或杂芳基团,n是0、1或2,R′是在反应条件下稳定的基团;式II为:
R′-C≡C-CO2R1 II式中R1是烷基、环烷基或芳基;式III为:
R-NH-NH2 III
1-(杂)芳基吡唑类化合物可用多种方法获得,所述方法被总结在例如Bull.Chim.Soc.1970,2717,Chem.Heterocyclic Compd.(Engl.Transl.)16(1980),1或Chem.Ber.102(1969),3260中。然而,这些方法或者有必须使用难以获取的原料的缺点,或者除了生成3-羟基吡唑类化合物之外,还生成相当大量的甚至是主要产物的5-羟基吡唑类化合物。
从J.Med.Chem.19(1976),715还知道一种从丙烯酸酯和肼衍生物制备3-羟基吡唑类化合物的方法,其缺点是初步形成的吡唑类化合物必须进一步氧化,使得制备至少要包括两个反应步骤。根据Chem.Pharm.Bull.1971,1389的方法,丙炔酸酯和肼衍生物在溶剂中在碱的存在下在溶剂的沸点反应得到3-羟基吡唑类化合物。然而这些方法的条件会导致原料的分解。
从Tetrahedron Lett.1970,875所述的实验结果,可以预料不能通过降低温度避免原料的分解,因为大多数5-羟基吡唑类化合物是在室温下反应生成的。
本发明的目的是提供提备1-(杂)芳基-3-羟基吡唑的简单而温和的方法,用它也能够大规模地制备敏感性原料。
我们发现,这一目的可通过在溶剂中在碱的存在下从式II丙炔酸酯和式III(杂)芳基肼制备式I1-(杂)芳基-3-羟基吡唑的方法达到,式I为:式中R是未取代的或取代的芳香或杂芳基团,n是0、1或2,R′是在反应条件下稳定的基团;式II为:
R′-C≡C-CO2R1 II式中R′是烷基、环烷基或芳基;式III为:
R-NH-NH2 III它包括首先在溶剂中将II与III相互混合,然而用碱在0-60℃下处理该混合物。
对于本发明的方法而言,重要的是式II和III原料首先在溶剂中相互混合,然后在0-60℃、优选0-40℃,特别是20-40℃下加入碱(必要是可在冷却下进行)。
原料II与III的摩尔比通常并不重要,然而,为使反应完全,推荐过量使用一种成分。因此,对于每摩尔肼III或相应的盐一般使用1-3mol丙炔酸酯II、优选1-1.5mol。
根据目前了解的情况来看,本发明方法中碱的用量也不重要。如果碱的用量为每摩尔肼III或相应的盐1-3mol通常已足够,优选1.5-2.5mol,特别是1.8-2.2mol。
所用溶剂基本上可以是可使原料II和III充分溶解的所有非质子传递溶剂。因而,适宜的溶剂是例如烃类或卤代烃类如二氯甲烷和四氢化碳或醚类如***、甲基·叔丁基醚和四氢呋喃或其混合物。此外适宜的溶剂还有醇类,但该醇必须不参与反应。因而适宜的醇类是特定的立***阻的醇类,即仲醇或叔醇,特别是叔醇如叔丁醇。
一般来说,所有非亲核碱都适宜于该反应。特别适宜的是叔胺{例如N,N-二异丙基-N-乙胺(Hunig′s碱)、1,5-二氮杂二环[4.3.0]壬-5-烯(DBN)、1,4-二氮杂二环[2.2.2]辛烷(Dabco)和1,8-二氮杂二环[5.4.0]十一碳-7-烯(DBU)}和具有4-8个碳原子的叔醇的碱金属盐(例如叔丁醇钾)。
原则上讲,所有在反应条件下酯基可被肼置换的丙炔酸酯II均可用于该反应。因此,可使用烷基酯、环烷基酯或芳基酯(例如C1-C6烷基酯、C3-C6环烷基酯、苯酯或苄酯)。基团R′的性质对于反应并不重要,只要该基团不参与反应(即在反应条件下稳定)便可。除了氢之外,还可提及下列稳定基团的实例:硝基、氰基、卤素、烷基、环烷基、卤代烷基、烷氧基、烷硫基、芳基或杂芳基。所述烷基基团通常含有不超过6个碳原子并且上述碳有机基团还可再带有在反应条件下稳定的基团。
适宜的(杂)芳基肼III是式中R是芳族或杂芳族基团(例如苯基、萘基、6元杂芳环如吡啶基、哒嗪基、嘧啶基、吡嗪基或三嗪基和5元杂芳环如呋喃基、噻吩基、吡咯基、异噁唑基、异噻唑基、噁唑基、噻唑基、吡唑基、咪唑基、噁二唑基、噻二唑基和***基)的化合物。这些基团又可带有上述在反应条件下稳定的基团。
除了肼III之外,也可使用相应的盐,特别是无机酸酸盐(例如:卤化物如氯化物和溴化物、硫酸盐、磷酸盐、硫酸氢盐、乙酸盐)。如果碱的用量较大,则这些盐在反应条件下也表现出相应的行为。因而,对于每摩尔盐,使用2-4mol,优选2.5-3.5mol,特别是2.8-3.2mol上述碱之一。
按照本发明方法尤其可制得式I1-(杂)芳基-3-羟基吡唑:式中各其团和符号具有如下意义:R是芳族或杂芳族基团,特别是苯基、吡啶基、嘧啶基、吡嗪基或哒嗪基,这些基团可以是部分或全部卤代(即,氢原子可以全部或部分地被相同或不同的囟原子、尤其是氟和氯所取代)和/或带有一 至三个下列基团:C1-C4烷基、C1-C4卤代烷基、C1-C4烷氧基、C1-C4卤代烷氧基和C1-C4烷硫基,和/或这些基团的两个相邻的碳原子通过C3-C5亚烷基链、C3-C5卤代亚烷氧基链、C2-C4亚烷氧基链、C2-C4卤代亚烷氧基链、C1-C3氧代亚烷氧基链或C1-C3氧代卤代亚烷氧基链连接成桥;n是0、1或2,尤其是0(≡R′=氢)或1,且R′是硝基、氰基、卤素(尤其是氟、氯和溴)、C1-C4烷基(尤其是甲基和乙基)、C1-C4卤代烷基(尤其是三氟甲基、二氟甲基和氯代甲基)、C1-C4烷氧基(尤其是甲氧基或乙氧基、C1-C4卤代烷氧基(尤其是三氟甲氧基)、C1-C4烷硫基(尤其是甲硫基)和C1-C4烷氧羰基(尤其是甲氧羰基和乙氧羰基)。
本发明方法特别适合用来制备下表所列的式I1-(杂)芳基-3-羟基吡唑,其中有些可从文献得知而有些则是新化合物。
R′ | R | R′ | R | |
H | C6H5 | H | 2,5-Cl2-C6H3 | |
H | 4-CH3-C6H4 | H | 3,4-Cl2-C6H3 | |
H | 3-Cl-C6H4 | H | 3-CF3-C6H4 | |
H | 4-Cl-C6H4 | H | 5-CF3-C6H4 | |
H | 4-F-C6H4 | 4-Cl | 4-CH3-C6H4 | |
H | 2,4-Cl2-C6H3 | 4-Cl | 4-Cl-C6H4 | |
H | 2,4-(CH3)2-C6H3 | H | 3-OCH3-C6H4 | |
H | 2-CH3,4-Cl-C6H3 | H | 3,4-[OCF2O]-C6H3 | |
H | 2-Cl-C6H4 | 4-CO2CH3 | 4-Cl-C6H4 | |
H | 3,5-Cl2-C6H3 | 4-CO2CH3 | 2,4-Cl2-C6H3 | |
H | 2,6-Cl2-C6H3 | H | 4-CF3-C6H4 | |
H | 2-CH3-C6H4 | H | 吡啶-2-基 | |
H | 3-CH3-C6H4 | 5-CH3 | C6H5 | |
H | 4-OCH3-C6H4 | 5-CF3 | 2,4-Cl2-C6H3 | |
4-NO2 | 2,4-Cl2-C6H3 | 4-Cl | 5-CF3-吡啶-2-基 | |
4-Cl | 2,4-Cl2-C6H3 | 4-CO2CH3 | C6H5 | |
H | 5-Cl-吡啶-2-基 | H | 4-OCF3-C6H4 | |
H | 1 1-吡嗪基 | H | 3-Cl-6-哒嗪基 |
实施例1
3-羟基-1-(4-甲氧基苯基)吡唑
在30℃下,向4-甲氧基苯基肼(72.7g)的叔丁醇(700ml)溶液中滴加56.8g丙炔酸乙酯来对其进行处理。然后,将总量为118g的叔丁醇钾在冰冷却下分批加到这样得到混合物中。于25℃保温12小时后,减压蒸除溶剂。将所得残余物溶于水中。用二氯甲烷洗涤该水溶液,然后在冷却下用浓醋酸酸化至pH9,产物以固体的形式沉淀下来。洗涤、干燥后,得60.3g标题化合物(收率:60%);m.p.:167-170℃。实施例2
3-羟基-1-(4-三氟甲氧基苯基)吡唑
按照实施例1所述的方法,由8.4g 4-三氟甲氧基苯基肼和4.7g丙炔酸乙酯(100ml叔丁醇,9.9g叔丁醇钾)制得2.43g标题化合物(收率:23%)。
1NMR(DMSO/TMS):10.40(s-br,1H),8.35(d,1H),7.80(d,2H),7.45(d,2H),5.90(d,1H).实施例3
3-羟基-1-(5-三氟甲基吡啶-2-基)吡唑
按照实施例1所述的的方法,由76.1g 5-三氟甲基吡啶-2-基肼和46.3g丙炔酸乙酯(700ml叔丁醇,96.3g叔丁醇钾)制得57.2g标题化合物(收率:58%);m.p.:199-205℃。
按照Chem.Pharm.Bull.19(1971),1394在例XXI中给出的方法,8.9g 5-三氟甲基吡啶-2-基肼与8.9g丙炔酸甲酯(100ml叔丁醇,11.2g叔丁醇钾)的反应产物根本检测不到。实施例4
3-羟基-1-(2-吡啶基)吡唑
按照实施例1所述的方法,由32.7g吡啶-2-基肼和64.7g丙炔酸乙乙酯(600ml叔丁醇,134.4g叔丁醇钾)制得19.1g标题化合物(收率:40%)。
1NMR(DMSO/TMS):10.40(s-br,1H),8.40(m,2H),7.90(m,1H),7.70(d,1H),7.20(m,1H),5.90(d,1H).
Claims (8)
1.在溶剂中在碱的存在下从式II的丙炔酸酯和式III的(杂)芳基肼制备式I的1-(杂)芳基-3-羟基吡唑的方法,式I为:式中R是未取代的或被取代的芳香基团或杂芳基基团,其中芳香基团选自苯基或萘基,而杂芳基基团选自吡啶基、哒嗪基、嘧啶基、吡嗪基、三嗪基、呋喃基、噻吩基、吡咯基、异噁唑基、异噻唑基、噁唑基、噻唑基、吡唑基、咪唑基、噁二唑基、噻二唑基和***基,而取代基则选自卤原子和/或C1-C4烷基、C1-C4卤代烷基、C1-C4烷氧基、C1-C4卤代烷氧基和C1-C4烷硫基,和/或这些基团的两个相邻的碳原子通过C3-C5亚烷基链、C3-C5卤代亚烷基链、C2-C4亚烷氧基链、C2-C4卤代亚烷氧基链、C1-C3氧代亚烷氧基链或C1-C3氧代卤代亚烷氧基链连接成桥,n是0或1,R′是在反应条件下稳定的基团,该基团选自硝基、氰基、卤素、C1-C4烷基、C1-C4卤代烷基、C1-C4烷氧基、C1-C4烷硫基和C1-C4烷氧羰基;式II为:
R′-C≡C-CO2R1 II式中R1是C1-C6烷基、C3-C6环烷基或选自苯基或苯甲基的芳基,R′的定义如上所述;式III为:
R-NH-NH2 III
式中R基团的定义如上所述,或其盐,该盐选自氯化物、溴化物、硫酸盐磷酸盐、硫酸氢盐或乙酸盐,该方法包括首先在溶剂中将式II化合物和式III化合物混合,然后用碱在0-60℃下处理该混合物。
2.权利要求1所述的方法,其中所用的碱是叔胺。
3.权利要求1所述的方法,其中所用的碱是具有4-8个碳原子的醇的碱金属盐。
4.权利要求1所述的方法,其中所述的反应在非质子传递溶剂中进行。
5.权利要求1所述的方法,其中所述的反应在叔醇中进行。
6.权利要求1所述的方法,其中所述碱的用量为每摩尔式III化合物1-3mol。
7.权利要求1所述的方法,其中对于每摩尔式III化合物,使用1-3mol式II化合物。
8.权利要求1所述的方法,其中不使用式III的(杂)芳基肼,而使用适当的鏻盐。
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DE4415484A DE4415484A1 (de) | 1994-05-03 | 1994-05-03 | Verfahren zur Herstellung von 1-(Het)aryl-3-hydroxy-pyrazolen |
DEP4415484.4 | 1994-05-03 |
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EP (1) | EP0680954B1 (zh) |
JP (1) | JP4042164B2 (zh) |
KR (1) | KR100365873B1 (zh) |
CN (1) | CN1056139C (zh) |
AT (1) | ATE197707T1 (zh) |
AU (1) | AU682257B2 (zh) |
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DE (2) | DE4415484A1 (zh) |
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JP5073664B2 (ja) | 2005-08-31 | 2012-11-14 | エフ.ホフマン−ラ ロシュ アーゲー | 11−βHSD1インヒビターとしてのピラゾロン誘導体 |
CN102482225B (zh) | 2009-09-04 | 2016-10-05 | 巴斯夫欧洲公司 | 制备1-苯基吡唑类的方法 |
JP2013522277A (ja) | 2010-03-18 | 2013-06-13 | ビーエーエスエフ ソシエタス・ヨーロピア | N−カルボメトキシ−n−メトキシ−(2−クロロメチル)−アニリン、その製造および2−(ピラゾール−3’−イルオキシメチレン)−アニリドを製造するための前駆体としてのその使用 |
CN103275011A (zh) * | 2013-06-13 | 2013-09-04 | 南京工业大学 | 咪唑烷类杂环的新合成方法 |
EP2881387A1 (en) | 2013-12-09 | 2015-06-10 | Basf Se | Pyrazolone compounds having herbicidal activity |
CN108558762A (zh) * | 2018-05-31 | 2018-09-21 | 浙江新农化工股份有限公司 | 吡唑醚菌酯中间体的纯化方法以及制备吡唑醚菌酯的工艺 |
WO2020094440A1 (en) | 2018-11-07 | 2020-05-14 | Basf Se | Process for the synthesis of aryl hydrazines |
Citations (3)
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EP0366328A1 (en) * | 1988-10-26 | 1990-05-02 | Nissan Chemical Industries, Limited | Process for preparing 4-methylpyrazoles |
EP0402722A1 (de) * | 1989-06-10 | 1990-12-19 | BASF Aktiengesellschaft | Verfahren zur Herstellung von Pyrazol und dessen Derivaten |
EP1073941A2 (en) * | 1998-04-16 | 2001-02-07 | Choice Logic Corporation | Methods and apparatus for gauging group choices |
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- 1994-05-03 DE DE4415484A patent/DE4415484A1/de not_active Withdrawn
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1995
- 1995-04-24 CA CA002147725A patent/CA2147725A1/en not_active Abandoned
- 1995-04-24 IL IL11346695A patent/IL113466A/xx not_active IP Right Cessation
- 1995-04-25 AT AT95106153T patent/ATE197707T1/de not_active IP Right Cessation
- 1995-04-25 EP EP95106153A patent/EP0680954B1/de not_active Expired - Lifetime
- 1995-04-25 DE DE59508867T patent/DE59508867D1/de not_active Expired - Lifetime
- 1995-04-26 US US08/429,322 patent/US5559244A/en not_active Expired - Lifetime
- 1995-04-26 JP JP10255695A patent/JP4042164B2/ja not_active Expired - Fee Related
- 1995-05-01 AU AU17778/95A patent/AU682257B2/en not_active Ceased
- 1995-05-02 NZ NZ272044A patent/NZ272044A/en unknown
- 1995-05-02 KR KR1019950010717A patent/KR100365873B1/ko not_active IP Right Cessation
- 1995-05-03 CN CN95103483A patent/CN1056139C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0366328A1 (en) * | 1988-10-26 | 1990-05-02 | Nissan Chemical Industries, Limited | Process for preparing 4-methylpyrazoles |
EP0402722A1 (de) * | 1989-06-10 | 1990-12-19 | BASF Aktiengesellschaft | Verfahren zur Herstellung von Pyrazol und dessen Derivaten |
EP1073941A2 (en) * | 1998-04-16 | 2001-02-07 | Choice Logic Corporation | Methods and apparatus for gauging group choices |
Also Published As
Publication number | Publication date |
---|---|
DE4415484A1 (de) | 1995-11-09 |
EP0680954A2 (de) | 1995-11-08 |
IL113466A0 (en) | 1995-07-31 |
KR950032133A (ko) | 1995-12-20 |
EP0680954A3 (de) | 1997-04-02 |
IL113466A (en) | 1999-08-17 |
JPH0841030A (ja) | 1996-02-13 |
AU682257B2 (en) | 1997-09-25 |
CA2147725A1 (en) | 1995-11-04 |
KR100365873B1 (ko) | 2003-04-10 |
NZ272044A (en) | 1996-01-26 |
EP0680954B1 (de) | 2000-11-22 |
JP4042164B2 (ja) | 2008-02-06 |
US5559244A (en) | 1996-09-24 |
DE59508867D1 (de) | 2000-12-28 |
ATE197707T1 (de) | 2000-12-15 |
AU1777895A (en) | 1995-11-09 |
CN1112552A (zh) | 1995-11-29 |
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