CN110669002B - 一种2-氟-3-羟基吡啶-4-羧酸的合成方法 - Google Patents
一种2-氟-3-羟基吡啶-4-羧酸的合成方法 Download PDFInfo
- Publication number
- CN110669002B CN110669002B CN201911079169.XA CN201911079169A CN110669002B CN 110669002 B CN110669002 B CN 110669002B CN 201911079169 A CN201911079169 A CN 201911079169A CN 110669002 B CN110669002 B CN 110669002B
- Authority
- CN
- China
- Prior art keywords
- fluoro
- hydroxypyridine
- carboxylic acid
- compound
- trimethylsilyl
- 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
Links
- ILTRDDUNTDIMDR-UHFFFAOYSA-N 2-fluoro-3-hydroxypyridine-4-carboxylic acid Chemical compound OC(=O)c1ccnc(F)c1O ILTRDDUNTDIMDR-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000010189 synthetic method Methods 0.000 title claims abstract description 10
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 claims abstract description 27
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 claims abstract description 23
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 claims abstract description 19
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- BPXKZEMBEZGUAH-UHFFFAOYSA-N 2-(chloromethoxy)ethyl-trimethylsilane Chemical compound C[Si](C)(C)CCOCCl BPXKZEMBEZGUAH-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 9
- 229940043279 diisopropylamine Drugs 0.000 claims abstract description 9
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 20
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229940126062 Compound A Drugs 0.000 claims description 4
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 claims description 2
- 230000002194 synthesizing effect Effects 0.000 claims 4
- 239000002994 raw material Substances 0.000 abstract description 9
- UEQRKEWMEMJXQO-UHFFFAOYSA-N 2-fluoropyridin-3-ol Chemical compound OC1=CC=CN=C1F UEQRKEWMEMJXQO-UHFFFAOYSA-N 0.000 abstract description 4
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 2
- 238000007039 two-step reaction Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000010511 deprotection reaction Methods 0.000 abstract 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 18
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 9
- HDSFRRGQPSVUMD-UHFFFAOYSA-N C[Si](C)(C)C1=C(N=CC=C1)COCCF Chemical compound C[Si](C)(C)C1=C(N=CC=C1)COCCF HDSFRRGQPSVUMD-UHFFFAOYSA-N 0.000 description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 239000012043 crude product Substances 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- 229910052731 fluorine Inorganic materials 0.000 description 6
- 239000011737 fluorine Substances 0.000 description 6
- 239000012074 organic phase Substances 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 239000000543 intermediate Substances 0.000 description 4
- 238000005160 1H NMR spectroscopy Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical class [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical class [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 3
- 239000005457 ice water Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000012044 organic layer Substances 0.000 description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 3
- 150000003222 pyridines Chemical class 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- MTAODLNXWYIKSO-UHFFFAOYSA-N 2-fluoropyridine Chemical compound FC1=CC=CC=N1 MTAODLNXWYIKSO-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 pyridine compound Chemical class 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 102100032373 Coiled-coil domain-containing protein 85B Human genes 0.000 description 1
- 101000868814 Homo sapiens Coiled-coil domain-containing protein 85B Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- LVTYICIALWPMFW-UHFFFAOYSA-N diisopropanolamine Chemical compound CC(O)CNCC(C)O LVTYICIALWPMFW-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000857 drug effect Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- DLEDOFVPSDKWEF-UHFFFAOYSA-N lithium butane Chemical compound [Li+].CCC[CH2-] DLEDOFVPSDKWEF-UHFFFAOYSA-N 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic 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
- C07D213/02—Heterocyclic 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
- C07D213/04—Heterocyclic 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
- C07D213/60—Heterocyclic 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
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/79—Acids; Esters
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic 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
- C07D213/02—Heterocyclic 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
- C07D213/04—Heterocyclic 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
- C07D213/60—Heterocyclic 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
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/79—Acids; Esters
- C07D213/803—Processes of preparation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
Abstract
本发明提出一种2‑氟‑3‑羟基吡啶‑4‑羧酸的合成方法,属于有机化学合成领域。以2‑氟‑3‑羟基吡啶为原料,在N,N‑二异丙基乙胺、2‑(三甲基硅烷基)乙氧甲基氯及二异丙胺、正丁基锂、二氧化碳的作用下,通过羟基保护、与二氧化碳加成后脱保护两步反应得到目标产物2‑氟‑3‑羟基吡啶‑4‑羧酸。本方法反应步骤短,合成操作简单,易于实现。
Description
技术领域
本发明涉及有机化学合成领域,具体涉及一种2-氟-3-羟基吡啶-4-羧酸的合成方法。
背景技术
含氟吡啶类化合物是一类重要的精细化工中间体,由于其在性能上具有用量少、毒性低、药效高等特点,使其在新医药、农药品种中所占比例越来越高,也是国内含氟中间体研发的主要方向之一。以一些简单的吡啶类化合物及有机试剂为原料,通过引入一些特定的基团,可得到更具竞争力的新型含氟吡啶类精细中间体产品。因此,开发含氟吡啶类化合物的合成工艺,有重要意义。
鉴于此,我们提出了以含强给电子基团羟基的含氟吡啶为原料制备新型含氟吡啶类中间体的合成方法,该方法目前尚无文献报道。
发明内容
本发明所要解决的技术问题在于提供一种制备含氟吡啶类化合物中间体的合成方法。本发明首次提出2-氟-3-羟基吡啶-4-羧酸的合成方法,提供了一种反应步骤简短、合成操作简单的合成路线。
所述方法的合成路线如下:
所述合成路线通过以下步骤实现:
(1)将化合物A和N,N-二异丙基乙胺溶于二氯甲烷中,冷却,与2-(三甲基硅烷基)乙氧甲基氯反应得到化合物B;
(2)将二异丙胺混溶于四氢呋喃中,在氮气保护下进行冷却,加入正丁基锂搅拌后,再次冷却,加入化合物B,维持在冷却温度下搅拌,与二氧化碳作用,升温反应,得到化合物C。
优选地,步骤(1)中的反应温度为25℃,反应时间为5~40小时。
优选地,步骤(1)中化合物A、N,N-二异丙基乙胺和2-(三甲基硅烷基)乙氧甲基氯的摩尔比为1:1.5:1.2。
优选地,步骤(2)中的冷却温度为-78℃,与二氧化碳反应,升温至10~35℃,反应时间为5~40小时。
优选地,步骤(2)中正丁基锂的浓度为2.5mol/L,化合物B、二异丙胺和正丁基锂的摩尔比为1:1.2:1.1。
本发明的中文释义:DIEA:N,N-二异丙基乙胺;SEMCl:2-(三甲基硅烷基)乙氧甲基氯;DIPA:二异丙胺;n-BuLi:正丁基锂。
本发明的有益效果在于:
a.本发明首次提出2-氟-3-羟基吡啶-4-羧酸的合成方法,为2-氟-3-羟基吡啶-4-羧酸的制备提供了合成路线;
b.本发明2-氟-3-羟基吡啶-4-羧酸的合成方法为两步反应,工艺路线简短;
c.本发明反应操作方便,易于实现。
具体实施方式
本发明用下列实施例来进一步说明本发明,但本发明的保护范围并不限于实施例。本领域的技术人员在不背离本发明的精神和保护范围的情况下可做出许多其他的变化和修改。具体的说,化学和结构上相关的某些试剂可以代替这里描述的试剂以获得相同或相似的结果,并且优选范围之外的条件下反应有可能也能够进行,只是效果未达到最佳。因此,这些显而易见的替代和修改仍包括在权利要求书中保护的范围内。
实施例1
将2-氟-3-羟基吡啶(23.08g,200mmol,1eq.)和N,N-二异丙基乙胺(50ml,300mmol,1.5eq.)溶于200ml二氯甲烷中,冷却后,滴加2-(三甲基硅烷基)乙氧甲基氯(42.5ml,240mmol,1.2eq.),在25℃下反应20小时。
待原料反应完毕后,加入饱和碳酸氢钠溶液,分液,有机层经浓缩后,得到45.26g淡黄色油状物2-氟-3-(三甲基硅烷基)乙氧甲基吡啶,收率93%。
将2-氟-3-(三甲基硅烷基)乙氧甲基吡啶(45.26g,186mmol,1eq.)溶于四氢呋喃中,放入滴加漏斗中备用。向反应器中加入二异丙胺(31.6ml,223.2mmol,1.2eq.)和300ml四氢呋喃,在氮气保护下冷却至-78℃,滴加正丁基锂(82ml,204.6mmol,1.1eq.),升至25℃搅拌1小时后,再次冷却至-78℃,滴加备用的2-氟-3-(三甲基硅烷基)乙氧甲基吡啶的四氢呋喃溶液,-78℃下搅拌2小时。随后与二氧化碳作用,并升温至12℃,反应40小时。
待原料反应完毕后,在冰水浴下,滴加250ml饱和氯化铵溶液,用乙酸乙酯萃取,将得到的有机相进行浓缩后,用4mol/L的盐酸调pH至3~4。搅拌1小时后,用乙酸乙酯萃取,浓缩有机相得到粗品。粗品用乙腈打浆,得到25.13g白色固体2-氟-3-羟基吡啶-4-羧酸,收率86%。
1H NMR(d6-DMSO):13.87(s,br,1H),7.73(d,J=5.2Hz,1H),7.55(d,J=5.2Hz,1H)。
实施例2
将2-氟-3-羟基吡啶(18.46g,160mmol,1eq.)和N,N-二异丙基乙胺(40ml,240mmol,1.5eq.)溶于150ml二氯甲烷中,冷却后,滴加2-(三甲基硅烷基)乙氧甲基氯(34ml,192mmol,1.2eq.),在25℃下反应8小时。
待原料反应完毕后,加入饱和碳酸氢钠溶液,分液,有机层经浓缩后,得到27.64g淡黄色油状物2-氟-3-(三甲基硅烷基)乙氧甲基吡啶,收率71%。
将2-氟-3-(三甲基硅烷基)乙氧甲基吡啶(27.64g,113.6mmol,1eq.)溶于四氢呋喃中,放入滴加漏斗中备用。向反应器中加入二异丙胺(19.3ml,136.3mmol,1.2eq.)和200ml四氢呋喃,在氮气保护下冷却至-78℃,滴加正丁基锂(50ml,125mmol,1.1eq.),升至25℃搅拌1小时后,再次冷却至-78℃,滴加备用的2-氟-3-(三甲基硅烷基)乙氧甲基吡啶的四氢呋喃溶液,-78℃下搅拌2小时。随后与二氧化碳作用,并升温至35℃,反应7小时。
待原料反应完毕后,在冰水浴下,滴加180ml饱和氯化铵溶液,用乙酸乙酯萃取,将得到的有机相进行浓缩后,用4mol/L的盐酸调pH至3~4。搅拌1小时后,用乙酸乙酯萃取,浓缩有机相得到粗品。粗品用乙腈打浆,得到15.53g白色固体2-氟-3-羟基吡啶-4-羧酸,收率87%。
1H NMR(d6-DMSO):13.87(s,br,1H),7.73(d,J=5.2Hz,1H),7.55(d,J=5.2Hz,1H)。
实施例3
将2-氟-3-羟基吡啶(28.85g,250mmol,1eq.)和N,N-二异丙基乙胺(62ml,375mmol,1.5eq.)溶于200ml二氯甲烷中,冷却后,滴加2-(三甲基硅烷基)乙氧甲基氯(53.1ml,300mmol,1.2eq.),在25℃下反应36小时。
待原料反应完毕后,加入饱和碳酸氢钠溶液,分液,有机层经浓缩后,得到51.1g淡黄色油状物2-氟-3-(三甲基硅烷基)乙氧甲基吡啶,收率84%。
将2-氟-3-(三甲基硅烷基)乙氧甲基吡啶(51.1g,210mmol,1eq.)溶于四氢呋喃中,放入滴加漏斗中备用。向反应器中加入二异丙胺(35.7ml,252mmol,1.2eq.)和400ml四氢呋喃,在氮气保护下冷却至-78℃,滴加正丁基锂(92.5ml,231mmol,1.1eq.),升至25℃搅拌1小时后,再次冷却至-78℃,滴加备用的2-氟-3-(三甲基硅烷基)乙氧甲基吡啶的四氢呋喃溶液,-78℃下搅拌2小时。随后与二氧化碳作用,并升温至23℃,反应25小时。
待原料反应完毕后,在冰水浴下,滴加250ml饱和氯化铵溶液,用乙酸乙酯萃取,将得到的有机相进行浓缩后,用4mol/L的盐酸调pH至5~6。搅拌1小时后,用乙酸乙酯萃取,浓缩有机相得到粗品。粗品用乙腈打浆,得到23.75g白色固体2-氟-3-羟基吡啶-4-羧酸,收率72%。
1H NMR(d6-DMSO):13.87(s,br,1H),7.73(d,J=5.2Hz,1H),7.55(d,J=5.2Hz,1H)。
Claims (5)
2.根据权利要求1所述的一种2-氟-3-羟基吡啶-4-羧酸的合成方法,其特征在于,步骤(1)中的反应温度为25℃,反应时间为5~40小时。
3.根据权利要求2所述的一种2-氟-3-羟基吡啶-4-羧酸的合成方法,其特征在于,步骤(1)中化合物A、N,N-二异丙基乙胺和2-(三甲基硅烷基)乙氧甲基氯的摩尔比为1:1.5:1.2。
4.根据权利要求1所述的一种2-氟-3-羟基吡啶-4-羧酸的合成方法,其特征在于,步骤(2)中的冷却温度为-78℃,与二氧化碳反应,升温至10~35℃,反应时间为5~40小时。
5.根据权利要求4所述的一种2-氟-3-羟基吡啶-4-羧酸的合成方法,其特征在于,步骤(2)中正丁基锂的浓度为2.5mol/L,化合物B、二异丙胺和正丁基锂的摩尔比为1:1.2:1.1。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911079169.XA CN110669002B (zh) | 2019-11-07 | 2019-11-07 | 一种2-氟-3-羟基吡啶-4-羧酸的合成方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911079169.XA CN110669002B (zh) | 2019-11-07 | 2019-11-07 | 一种2-氟-3-羟基吡啶-4-羧酸的合成方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110669002A CN110669002A (zh) | 2020-01-10 |
CN110669002B true CN110669002B (zh) | 2022-03-11 |
Family
ID=69086504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201911079169.XA Active CN110669002B (zh) | 2019-11-07 | 2019-11-07 | 一种2-氟-3-羟基吡啶-4-羧酸的合成方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110669002B (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111559967B (zh) * | 2020-06-04 | 2022-03-11 | 阿里生物新材料(常州)有限公司 | 一种4-氨基-2-羟基-3-异丙氧基苯甲酸的合成方法 |
CN111909078B (zh) * | 2020-09-02 | 2022-03-11 | 阿里生物新材料(常州)有限公司 | 一种(2-氟-6-(三氟甲基)吡啶-3-基)甲醇的合成方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103897028A (zh) * | 2014-04-04 | 2014-07-02 | 亿腾药业(泰州)有限公司 | 一种硼替佐米的合成方法 |
CN104478913A (zh) * | 2014-12-31 | 2015-04-01 | 大连联化化学有限公司 | 2-氟吡啶-4-硼酸的制备方法 |
CN108675954A (zh) * | 2018-04-03 | 2018-10-19 | 爱斯特(成都)生物制药股份有限公司 | 2-氨基-3-羟甲基吡啶的一种制备方法 |
-
2019
- 2019-11-07 CN CN201911079169.XA patent/CN110669002B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103897028A (zh) * | 2014-04-04 | 2014-07-02 | 亿腾药业(泰州)有限公司 | 一种硼替佐米的合成方法 |
CN104478913A (zh) * | 2014-12-31 | 2015-04-01 | 大连联化化学有限公司 | 2-氟吡啶-4-硼酸的制备方法 |
CN108675954A (zh) * | 2018-04-03 | 2018-10-19 | 爱斯特(成都)生物制药股份有限公司 | 2-氨基-3-羟甲基吡啶的一种制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN110669002A (zh) | 2020-01-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110669002B (zh) | 一种2-氟-3-羟基吡啶-4-羧酸的合成方法 | |
CN106928214A (zh) | 一种噁唑烷酮类化合物及其中间体的制备方法 | |
CN106660959B (zh) | 3-羟基吡啶甲酸的制备方法 | |
CN106674264A (zh) | (2,2,2‑三氟乙氧基)苯硼酸类化合物的合成方法 | |
JP2000063334A (ja) | エンイン誘導体の新規製造中間体及びその製造法 | |
JP6218077B2 (ja) | 有機ホウ素化合物及びその製造方法 | |
CN108218754B (zh) | 一种2-(2,5-二氟苯基)吡咯烷的制备方法 | |
Fiandanese et al. | A straightforward method for the synthesis of unsymmetrically substituted 1, 3-diynes | |
CN108503552A (zh) | 一种三氟甲基芳香胺的制备方法 | |
CN103787968B (zh) | 化合物的制备方法 | |
JP2022516863A (ja) | スルホンアミド除草剤プロセス中間生成物の調製 | |
JP2007297297A (ja) | 不純物の低減された2−シアノフェニルボロン酸又はそのエステル体、並びにその製造方法 | |
CN109503578A (zh) | 1-氧亚基-2,8-二氮杂螺[4.5]癸烷-4-甲酸乙酯-8-甲酸叔丁酯合成方法 | |
CN106316953A (zh) | 一种6-氰基菲啶类化合物的合成方法 | |
CN105237483B (zh) | 一种对称型嘧啶基碘鎓盐及其制备方法 | |
CN110862421B (zh) | 含氮杂环二茂铁衍生物的合成方法 | |
CN110283040B (zh) | 3-甲基-d3-苄溴的合成方法 | |
CN108976198B (zh) | 一种3-(4-吡啶)吲哚类化合物的合成方法 | |
CN113004248A (zh) | 一种钴催化碳氢胺化反应合成咔唑类化合物的方法 | |
CN104926847B (zh) | 一种合成硼胺类化合物工艺及产品应用 | |
WO2015163446A1 (ja) | イミダゾール化合物の製造方法 | |
CN110016030B (zh) | 一种5-氟-1H-吡咯-[2,3-b]吡啶-4-甲醛的制备方法 | |
CN115850232B (zh) | 一种氟哌噻吨ep杂质h的制备方法及其应用 | |
CN106977535A (zh) | 一种合成2‑氰基3‑氟苯硼酸工艺 | |
CN106467557A (zh) | 他瓦硼罗的一种制备方法 |
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 | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A synthesis method of 2-fluoro-3-hydroxypyridin-4-carboxylic acid Effective date of registration: 20231020 Granted publication date: 20220311 Pledgee: China Construction Bank Corporation Changzhou Xinbei sub branch Pledgor: ALI BIOLOGICAL NEW MATERIAL (CHANGZHOU) CO.,LTD. Registration number: Y2023980061693 |