CN117820075A - 4-溴-2-环丙基-三氟甲苯的合成方法 - Google Patents
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- -1 4-bromo-2-cyclopropyl-benzotrifluoride Chemical compound 0.000 title claims abstract description 14
- 238000001308 synthesis method Methods 0.000 title abstract description 8
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 14
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000047 product Substances 0.000 claims abstract description 11
- 229910021589 Copper(I) bromide Inorganic materials 0.000 claims abstract description 9
- 238000004440 column chromatography Methods 0.000 claims abstract description 9
- NKNDPYCGAZPOFS-UHFFFAOYSA-M copper(i) bromide Chemical compound Br[Cu] NKNDPYCGAZPOFS-UHFFFAOYSA-M 0.000 claims abstract description 9
- 235000010288 sodium nitrite Nutrition 0.000 claims abstract description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229940125904 compound 1 Drugs 0.000 claims abstract description 8
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 8
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- VMERAUXEEDONDK-UHFFFAOYSA-N 3-bromo-4-(trifluoromethyl)aniline Chemical compound NC1=CC=C(C(F)(F)F)C(Br)=C1 VMERAUXEEDONDK-UHFFFAOYSA-N 0.000 claims abstract description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000012043 crude product Substances 0.000 claims abstract description 5
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000160 potassium phosphate Inorganic materials 0.000 claims abstract description 4
- 235000011009 potassium phosphates Nutrition 0.000 claims abstract description 4
- AUNNTHNQWVSPPP-UHFFFAOYSA-N cyclopropyloxyboronic acid Chemical compound OB(O)OC1CC1 AUNNTHNQWVSPPP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 3
- USFPINLPPFWTJW-UHFFFAOYSA-N tetraphenylphosphonium Chemical compound C1=CC=CC=C1[P+](C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 USFPINLPPFWTJW-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 2
- PGFPLTAEOHMUKY-UHFFFAOYSA-N 4-bromo-2-iodo-1-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(Br)C=C1I PGFPLTAEOHMUKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002547 new drug Substances 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- WLVKDFJTYKELLQ-UHFFFAOYSA-N cyclopropylboronic acid Chemical compound OB(O)C1CC1 WLVKDFJTYKELLQ-UHFFFAOYSA-N 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/68—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/02—Systems containing only non-condensed rings with a three-membered ring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
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Abstract
本发明涉及一种4‑溴‑2‑环丙基‑三氟甲苯的合成方法。主要解决此化合物缺少工业化合成方法的技术问题。本发明合成步骤:将3‑溴‑4‑三氟甲基苯胺,环丙基硼酸,磷酸钾,和四三苯基膦钯在甲苯和水中,加热得到化合物1,产品柱层析提纯;提纯后的化合物1在丙酮中,与氢溴酸,亚硝酸钠和溴化亚铜反应,粗品柱层析纯化得到目标产物。
Description
技术领域
本发明涉及多取代苯类化合物合成方法,特别涉及到4-溴-2-环丙基-三氟甲苯(CAS:1353854-78-0)的合成方法。
背景技术
4-溴-2-环丙基-三氟甲苯是一种有机小分子化合物,其结构中包含一个三氟甲基和一个环丙基,都是当今新药研发中的热门取代基。它还包含一个溴原子,可以作为连接点,偶联各种分子结构。所以该分子可以作为一种重要的有机切块,广泛的应用于新药研发之中。但迄今为止关于其工业化合成方法未见公开报道。最初设计用市场有售的2-碘-4-溴三氟甲苯(CAS:1256945-00-2)与环丙基硼酸偶联,一步得到目标产品,但该方法选择性不好,得到的是原料,产品和双环丙基杂质的混合物,这些化合物极性非常相近,无法通过常规柱层析方法纯化。
发明内容
本发明的目的是提供一种4-溴-2-环丙基-三氟甲苯的合成方法, 主要解决此化合物缺少合成方法的技术问题。
本发明技术方案如下:一种4-溴-2-环丙基-三氟甲苯的合成方法,包括以下步骤:将3-溴-4-三氟甲基苯胺,环丙基硼酸,磷酸钾,和四三苯基膦钯在甲苯和水中,加热得到化合物1,产品柱层析提纯;提纯后的化合物1在丙酮中,与氢溴酸,亚硝酸钠水溶液和溴化亚铜反应,粗品柱层析纯化得到目标产物。
。
上述反应中,步骤1所述加热温度为90℃-120℃,优选100℃,反应10-18小时,优选反应时间14小时。步骤2滴加亚硝酸钠水溶液温度为0℃-10℃,优选反应温度为5℃,反应5-20分钟,优选反应时间10分钟,加完溴化亚铜反应1-3小时,优先反应时间2小时。
本发明的有益效果是:本发明以3-溴-4-三氟甲基苯胺(CAS:172215-91-7)为起始原料,两步得到目标产物,规避了偶联选择性问题,且每步产品与原料和生成杂质的极性差别大,易于纯化。该方法两步总收率55%,产品纯度99% ,具有很高市场应用价值,适合工厂放大生产。
附图说明
图1为本发明产物的液相色谱图。
图2为本发明产物的核磁图谱。
具体实施方式
实施例1:4-溴-2-环丙基-三氟甲苯。
步骤1:
将3-溴-4-三氟甲基苯胺(25 g,0.104 mol),环丙基硼酸(12.5 g,0.146 mol),磷酸钾(77.2 g,0.364 mol)和四三苯基膦钯(6 g,5.2 mmol)加入甲苯(500 mL)和水(50 mL)中,反应体系用氮气置换3次,在100摄氏度下搅拌14小时。冷却至室温,将反应液倒入水(500 mL)和乙酸乙酯(500 mL)中,搅拌,分液。有机相无水硫酸钠干燥,过滤,减压浓缩干。所得粗品柱层析纯化(石油醚:乙酸乙酯体积比= 10:1)得无色液体化合物1(17.3 g,83%收率)。
MS (ESI) M/Z: 202.1 [M+H] +。
步骤2:
化合物1(17.3 g,0.086 mol)溶于丙酮(350 mL)中,加入氢溴酸水溶液(48%质量百分浓度,30 mL)。冰水浴冷却,在5摄氏度下滴加亚硝酸钠(5.9 g ,0.086 mol)的水(30mL)溶液。加完继续搅拌10分钟。再加入溴化亚铜(1.85 g,0.013 mol),反应液缓慢升至室温搅拌2小时。将反应液倒入水(1 L)中,用乙酸乙酯(500 mL*2)萃取,有机相用依次用饱和食盐水洗,无水硫酸钠干燥,减压浓缩干。所得粗品柱层析纯化(石油醚:乙酸乙酯体积比=50:1)得无色液体产品(14.9 g,66%收率,纯度99.14%)。1H NMR (400 MHz, Chloroform-d)δ 7.45 (d, J = 8.4 Hz, 1H), 7.37 (ddd, J = 8.4, 2.0, 0.9 Hz, 1H), 7.16 (d, J= 1.9 Hz, 1H), 2.18 (dtdq, J = 8.7, 7.0, 5.3, 1.7 Hz, 1H), 1.13 – 0.96 (m,2H), 0.80 –0.75 (m, 2H)。液相色谱图和核磁图谱参照图1、2。
实施例2,步骤1反应温度为90℃,反应时间18小时;步骤2滴加亚硝酸钠水溶液反应温度为0℃,反应时间20分钟,加完溴化亚铜反应3小时。其余同实施例1。
实施例3,步骤1反应温度为120℃,反应时间10小时;步骤2滴加亚硝酸钠水溶液反应温度为10℃,反应时间5分钟,加完溴化亚铜反应1小时。其余同实施例1。
Claims (5)
1.一种4-溴-2-环丙基-三氟甲苯的合成方法,其特征是:包括以下步骤:将3-溴-4-三氟甲基苯胺,环丙基硼酸,磷酸钾,和四三苯基膦钯在甲苯和水中,加热得到化合物1,产品柱层析提纯;提纯后的化合物1在丙酮中,与氢溴酸,亚硝酸钠水溶液和溴化亚铜反应,粗品柱层析纯化得到目标产物;合成线路如下:
。
2.根据权利要求1所述的4-溴-2-环丙基-三氟甲苯的合成方法,其特征是:步骤1所述加热温度为90℃-120℃,反应10-18小时。
3.根据权利要求2所述的4-溴-2-环丙基-三氟甲苯的合成方法,其特征是:所述加热温度为100℃,反应14小时。
4.根据权利要求1所述的4-溴-2-环丙基-三氟甲苯的合成方法,其特征是:所述步骤2,滴加亚硝酸钠水溶液温度为0℃-10℃, 反应5-20分钟,加完溴化亚铜后继续搅拌1-3小时。
5.根据权利要求4所述的4-溴-2-环丙基-三氟甲苯的合成方法,其特征是:滴加亚硝酸钠水溶液温度为5℃,反应10分钟,完溴化亚铜后继续搅拌2小时。
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