CN111533644B - 氟代苄酯类杀虫剂关键中间体4-炔丙基-2,3,5,6-四氟苄醇的合成方法 - Google Patents
氟代苄酯类杀虫剂关键中间体4-炔丙基-2,3,5,6-四氟苄醇的合成方法 Download PDFInfo
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- HSWOILMZLAARCG-UHFFFAOYSA-N (2,3,5,6-tetrafluoro-4-prop-2-ynylphenyl)methanol Chemical compound OCC1=C(F)C(F)=C(CC#C)C(F)=C1F HSWOILMZLAARCG-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000002917 insecticide Substances 0.000 title description 5
- 125000004175 fluorobenzyl group Chemical group 0.000 title description 4
- 238000010189 synthetic method Methods 0.000 title description 2
- 238000006243 chemical reaction Methods 0.000 claims abstract description 122
- 239000000126 substance Substances 0.000 claims abstract description 47
- FPGGTKZVZWFYPV-UHFFFAOYSA-M tetrabutylammonium fluoride Chemical compound [F-].CCCC[N+](CCCC)(CCCC)CCCC FPGGTKZVZWFYPV-UHFFFAOYSA-M 0.000 claims abstract description 36
- 150000001875 compounds Chemical class 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 20
- ADIJGVURNDURDC-UHFFFAOYSA-N [4-(bromomethyl)-2,3,5,6-tetrafluorophenyl]methanol Chemical compound OCC1=C(F)C(F)=C(CBr)C(F)=C1F ADIJGVURNDURDC-UHFFFAOYSA-N 0.000 claims abstract description 19
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000005046 Chlorosilane Substances 0.000 claims abstract description 7
- 239000007810 chemical reaction solvent Substances 0.000 claims abstract description 7
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- 150000001879 copper Chemical class 0.000 claims abstract description 6
- 238000001308 synthesis method Methods 0.000 claims abstract description 4
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 3
- 239000003446 ligand Substances 0.000 claims abstract description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 86
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 75
- 238000004809 thin layer chromatography Methods 0.000 claims description 37
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 27
- 239000000706 filtrate Substances 0.000 claims description 27
- 239000002904 solvent Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 19
- 239000012074 organic phase Substances 0.000 claims description 19
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical group CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 18
- ILMRJRBKQSSXGY-UHFFFAOYSA-N tert-butyl(dimethyl)silicon Chemical compound C[Si](C)C(C)(C)C ILMRJRBKQSSXGY-UHFFFAOYSA-N 0.000 claims description 17
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 15
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 15
- 229910021595 Copper(I) iodide Inorganic materials 0.000 claims description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- LSXDOTMGLUJQCM-UHFFFAOYSA-M copper(i) iodide Chemical compound I[Cu] LSXDOTMGLUJQCM-UHFFFAOYSA-M 0.000 claims description 14
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 claims description 13
- 229910000024 caesium carbonate Inorganic materials 0.000 claims description 13
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 11
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- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 10
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 10
- 230000002194 synthesizing effect Effects 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- KQIADDMXRMTWHZ-UHFFFAOYSA-N chloro-tri(propan-2-yl)silane Chemical compound CC(C)[Si](Cl)(C(C)C)C(C)C KQIADDMXRMTWHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- ZGYICYBLPGRURT-UHFFFAOYSA-N tri(propan-2-yl)silicon Chemical compound CC(C)[Si](C(C)C)C(C)C ZGYICYBLPGRURT-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 claims description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- BCNZYOJHNLTNEZ-UHFFFAOYSA-N tert-butyldimethylsilyl chloride Chemical group CC(C)(C)[Si](C)(C)Cl BCNZYOJHNLTNEZ-UHFFFAOYSA-N 0.000 claims description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 3
- 229910021589 Copper(I) bromide Inorganic materials 0.000 claims description 3
- NKNDPYCGAZPOFS-UHFFFAOYSA-M copper(i) bromide Chemical group Br[Cu] NKNDPYCGAZPOFS-UHFFFAOYSA-M 0.000 claims description 3
- PQDJYEQOELDLCP-UHFFFAOYSA-N trimethylsilane Chemical compound C[SiH](C)C PQDJYEQOELDLCP-UHFFFAOYSA-N 0.000 claims description 3
- ZXSQEZNORDWBGZ-UHFFFAOYSA-N 1,3-dihydropyrrolo[2,3-b]pyridin-2-one Chemical compound C1=CN=C2NC(=O)CC2=C1 ZXSQEZNORDWBGZ-UHFFFAOYSA-N 0.000 claims description 2
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 claims description 2
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 2
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims description 2
- 239000012043 crude product Substances 0.000 claims description 2
- 229940045803 cuprous chloride Drugs 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 238000001953 recrystallisation Methods 0.000 claims description 2
- 229910001958 silver carbonate Inorganic materials 0.000 claims description 2
- LKZMBDSASOBTPN-UHFFFAOYSA-L silver carbonate Substances [Ag].[O-]C([O-])=O LKZMBDSASOBTPN-UHFFFAOYSA-L 0.000 claims description 2
- 239000001632 sodium acetate Substances 0.000 claims description 2
- 235000017281 sodium acetate Nutrition 0.000 claims description 2
- 239000012295 chemical reaction liquid Substances 0.000 claims 1
- 125000006246 terminal alkyne protecting group Chemical group 0.000 claims 1
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 description 40
- 239000003795 chemical substances by application Substances 0.000 description 26
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 18
- 238000002360 preparation method Methods 0.000 description 15
- 230000008018 melting Effects 0.000 description 12
- 238000002844 melting Methods 0.000 description 12
- 239000007787 solid Substances 0.000 description 12
- CWMFRHBXRUITQE-UHFFFAOYSA-N trimethylsilylacetylene Chemical group C[Si](C)(C)C#C CWMFRHBXRUITQE-UHFFFAOYSA-N 0.000 description 10
- -1 fluorobenzyl ester Chemical class 0.000 description 5
- FELJKJIBCVUWKQ-UHFFFAOYSA-N CC(C)[Si](C(C)C)(C(C)C)OCC(C(F)=C(C(CBr)=C1F)F)=C1F Chemical compound CC(C)[Si](C(C)C)(C(C)C)OCC(C(F)=C(C(CBr)=C1F)F)=C1F FELJKJIBCVUWKQ-UHFFFAOYSA-N 0.000 description 4
- 239000000543 intermediate Substances 0.000 description 4
- 239000007818 Grignard reagent Substances 0.000 description 3
- 150000004795 grignard reagents Chemical class 0.000 description 3
- QJXCFMJTJYCLFG-UHFFFAOYSA-N 2,3,4,5,6-pentafluorobenzaldehyde Chemical compound FC1=C(F)C(F)=C(C=O)C(F)=C1F QJXCFMJTJYCLFG-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- KZGWPHUWNWRTEP-UHFFFAOYSA-N ethynyl-tri(propan-2-yl)silane Chemical group CC(C)[Si](C#C)(C(C)C)C(C)C KZGWPHUWNWRTEP-UHFFFAOYSA-N 0.000 description 2
- 239000012280 lithium aluminium hydride Substances 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- RRWJXAJEGRDMQH-UHFFFAOYSA-N 1-methoxypropa-1,2-diene Chemical compound COC=C=C RRWJXAJEGRDMQH-UHFFFAOYSA-N 0.000 description 1
- ATVJXMYDOSMEPO-UHFFFAOYSA-N 3-prop-2-enoxyprop-1-ene Chemical compound C=CCOCC=C ATVJXMYDOSMEPO-UHFFFAOYSA-N 0.000 description 1
- ABQIERQXAUMNCS-UHFFFAOYSA-N 4-bromo-2,3,5,6-tetrafluorobenzaldehyde Chemical compound FC1=C(F)C(C=O)=C(F)C(F)=C1Br ABQIERQXAUMNCS-UHFFFAOYSA-N 0.000 description 1
- 241001674044 Blattodea Species 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 238000003747 Grignard reaction Methods 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 125000003172 aldehyde group Chemical group 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001345 alkine derivatives Chemical group 0.000 description 1
- VEMKTZHHVJILDY-UXHICEINSA-N bioresmethrin Chemical compound CC1(C)[C@H](C=C(C)C)[C@H]1C(=O)OCC1=COC(CC=2C=CC=CC=2)=C1 VEMKTZHHVJILDY-UXHICEINSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 229960001701 chloroform Drugs 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 231100001224 moderate toxicity Toxicity 0.000 description 1
- 150000007530 organic bases Chemical group 0.000 description 1
- 239000003987 organophosphate pesticide Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- YORCIIVHUBAYBQ-UHFFFAOYSA-N propargyl bromide Chemical compound BrCC#C YORCIIVHUBAYBQ-UHFFFAOYSA-N 0.000 description 1
- LJZPPWWHKPGCHS-UHFFFAOYSA-N propargyl chloride Chemical compound ClCC#C LJZPPWWHKPGCHS-UHFFFAOYSA-N 0.000 description 1
- 239000002728 pyrethroid Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/09—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis
- C07C29/10—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
- C07F7/1872—Preparation; Treatments not provided for in C07F7/20
- C07F7/188—Preparation; Treatments not provided for in C07F7/20 by reactions involving the formation of Si-O linkages
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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
一种4‑炔丙基‑2,3,5,6‑四氟苄醇(Ι)的合成方法:以4‑羟甲基‑2,3,5,6‑四氟苄基溴(II)为原料,加入氯硅烷试剂、有机溶剂和碱性物质,于0~30℃下搅拌反应2~10h,之后反应液经后处理,得到化合物(III);将化合物(III)与化合物(IV)溶解在反应溶剂中,在铜盐催化以及1,10‑菲罗啉配体和碱性物质的共同作用下,于10~50℃搅拌反应15~30h,向反应体系中加入四丁基氟化铵,于20~40℃下继续搅拌反应2~7h,之后反应液经后处理,得到目标产物(Ι);本发明方法步骤短、操作简便、反应条件温和,原料廉价易得,收率高且成本低,易实现规模化生产;
Description
技术领域
本发明涉及医药化工中间体合成领域,特别是以4-羟甲基-2,3,5,6-四氟苄基溴(II)为起始原料制备氟代苄酯类杀虫剂关键中间体4-炔丙基-2,3,5,6-四氟苄醇(Ι)的新方法。
背景技术
拟除虫菊酯类是一种应用广泛、高效、低残留和中等毒性的农药杀虫剂。它对害虫十分有效,在高毒有机磷农药杀虫剂退出市场后,成为一种可选择的替代品。氟代苄酯是一种新型拟除虫菊酯类杀虫剂,其特征是对不卫生害虫,如蚊、蝇、蟑螂等既有良好的击倒性能,又有致死作用。
氟代苄酯类杀虫剂关键中间体4-炔丙基-2,3,5,6-四氟苄醇(Ι)结构式如下所示:
现有技术中,4-炔丙基-2,3,5,6-四氟苄醇(Ι)的主要合成方法如下:
1)EP 0271240A2报道了以五氟苯甲醛为原料,先与溴化锂发生溴代反应,再经硼氢化钠还原,接着上THP保护基,再与3-氯丙炔偶联,最后酸性条件下脱去THP保护基得到产物4-炔丙基-2,3,5,6-四氟苄醇。合成路线如下:
此路线共五步,其中五氟苯甲醛和3-溴丙炔原料价格较昂贵,第一步反应需要高温,第四步需用到正丁基锂试剂(要求无水无氧且需-78℃反应),反应条件要求苛刻,不易实现工业化生产。
2)JP 2000159704A报道了以4-溴-2,3,5,6-四氟苯甲醛为起始原料,先形成缩醛以保护醛基,接着与镁反应制得格氏试剂,随后与烯丙基醚反应,再在酸性条件下还原为醛,最后经氢化铝锂还原得到产物4-炔丙基-2,3,5,6-四氟苄醇。合成路线如下:
此路线共四步,其中氢化铝锂价格较贵且1-甲氧基-1,2-丙二烯价格也高昂不易得,第二步格氏反应要求反应体系无水无氧条件,不易实现规模化生产。
发明内容
本发明的目的是提供一种原料成本低、操作简单、反应条件温和的4-炔丙基-2,3,5,6-四氟苄醇(Ι)合成新方法。
本发明的技术方案如下:
一种4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,包括如下步骤:
(A)以4-羟甲基-2,3,5,6-四氟苄基溴(II)为原料,加入氯硅烷试剂、有机溶剂和碱性物质,于0~30℃下搅拌反应2~10h,TLC跟踪监测至反应完成,之后反应液经后处理,得到化合物(III);
所述4-羟甲基-2,3,5,6-四氟苄基溴(II)、碱性物质、氯硅烷试剂的物质的量之比为1.0:1.0~5.0:1.0~2.0,优选1.0:1.2~3.0:1.2~1.5;
所述氯硅烷试剂选自叔丁基二甲基氯硅烷或三异丙基氯硅烷;
所述碱性物质选自有机碱或无机碱,例如:三乙胺、咪唑、吡啶、二异丙基乙基胺、碳酸钾、碳酸钠等,优选咪唑或三乙胺;
所述的有机溶剂选自四氢呋喃、2-甲基四氢呋喃、二氯甲烷、三氯甲烷、乙腈、N,N-二甲基甲酰胺中的一种或两种以上任意比例的混合溶剂,优选二氯甲烷;所述有机溶剂的体积用量以4-羟甲基-2,3,5,6-四氟苄基溴(II)的质量计为3~20mL/g,优选4~15mL/g;
所述后处理的方法为:反应完成后,滤除不溶物,滤液用水洗涤后,经二氯甲烷萃取,合并有机相,经无水硫酸钠干燥、过滤,滤液减压蒸除溶剂并干燥,得到化合物(III);
(B)将化合物(III)与化合物(IV)溶解在反应溶剂中,在铜盐催化以及1,10-菲罗啉配体和碱性物质的共同作用下,于10~50℃搅拌反应15~30h,TLC跟踪监测至反应完全后(无须后处理),向反应体系中加入四丁基氟化铵(TBAF),于20~40℃下继续搅拌反应2~7h(以脱除硅烷保护基),TLC跟踪监测至反应完成,之后反应液经后处理,得到目标产物4-炔丙基-2,3,5,6-四氟苄醇(Ι);
所述化合物(III)、化合物(IV)、铜盐、1,10-菲罗啉、碱性物质的物质的量之比为1.0:1.0~2.5:0.05~0.5:0.1~1.0:1.0~3.0;
所述铜盐选自溴化亚铜、碘化亚铜或氯化亚铜,优选碘化亚铜;
所述碱性物质选自碳酸钠、碳酸钾、碳酸铯、碳酸银、叔丁醇钾、氢氧化钠、氢氧化钾、醋酸钠、三乙胺中的一种或两者以上任意比例的混合物,优选碳酸铯;
所述反应溶剂选自甲苯、N,N-二甲基甲酰胺、乙腈、四氢呋喃、乙醚中的一种或两种以上任意比例的混合溶剂,优选甲苯;所述反应溶剂的体积用量以化合物(III)的质量计为3~20mL/g,优选5~15mL/g;
所述四丁基氟化铵用量为化合物(III)的物质的量的1.0~4.0倍,优选1.0~2.0倍;
所述后处理的方法为:反应结束后,滤除不溶物,滤液依次用稀盐酸(1N)、水洗涤,甲苯萃取,合并有机相,经无水硫酸钠干燥、过滤,滤液减压蒸除溶剂得到粗品,经重结晶(溶剂为石油醚)纯化,得到目标产物(Ι);
反应式如下:
式(III)中,PG代表羟基保护基团,表示叔丁基二甲基硅烷(TBS)或三异丙基硅烷(TIPS);
式(IV)中,R代表端炔保护基团,表示三甲基硅烷(TMS)或三异丙基硅烷(TIPS)。
与现有技术相比,本发明的优点体现在:
(1)本发明方法步骤短、工艺简单、操作简便、反应条件温和。
(2)本发明方法避免了昂贵试剂的使用,原料廉价易得,总收率较高,总成本较低,容易实现规模化生产。
具体实施方式
下面通过具体实施例对本发明作进一步的说明,但本发明的保护范围并不仅限于此。
实施例一:(4-溴甲基-2,3,5,6-四氟苄氧基)三异丙基硅烷(Ⅲ-a)的制备
250mL反应瓶中加入4-羟甲基-2,3,5,6-四氟苄基溴(Ⅱ)(28.4g,100mmol),咪唑(13.6g,200mmol),二氯甲烷200mL,搅拌溶解后滴加三异丙基氯硅烷(21.2g,110mmol),维持温度0-5℃,滴加完毕后缓慢升温至25℃,保温反应8h。TLC跟踪反应进程(展开剂石油醚:乙酸乙酯=10:1,V:V),反应完成后,过滤除去不溶物,滤液中加入水100mL洗涤两次,二氯甲烷(2×60mL)萃取,合并有机相,经无水硫酸钠干燥、过滤,滤液减压浓缩去除溶剂得化合物(Ⅲ-a)(29.1g,收率68%),产物为无色油状液体。
1H NMR(400MHz,CDCl3):δ=5.05(t,J=1.7Hz,2H),4.46(s,2H),1.50-1.41(m,3H),1.07(d,J=6.8Hz,18H).
实施例二:(4-溴甲基-2,3,5,6-四氟苄氧基)叔丁基二甲基硅烷(Ⅲ-b)的制备
250mL反应瓶中加入4-羟甲基-2,3,5,6-四氟苄基溴(Ⅱ)(28.4g,100mmol),咪唑(13.6g,200mmol),二氯甲烷200mL,搅拌溶解后加入叔丁基二甲基氯硅烷(16.6g,110mmol),维持温度10-15℃,保温反应5h。TLC跟踪反应进程(展开剂石油醚:乙酸乙酯=10:1,V:V),反应完成后,过滤除去不溶物,滤液中加入水100mL洗涤两次,二氯甲烷(2×60mL)萃取,合并有机相,经无水硫酸钠干燥、过滤,滤液减压浓缩去除溶剂得化合物(Ⅲ-b)(23.5g,收率75%),产物为无色结晶固体,熔点39-41℃;
1H NMR(400MHz,CDCl3):δ=4.80(t,J=1.4Hz,2H),4.54(s,2H),0.93(s,9H),0.15(s,6H)。
实施例三:(4-溴甲基-2,3,5,6-四氟苄氧基)叔丁基二甲基硅烷(Ⅲ-b)的制备
250mL反应瓶中加入4-羟甲基-2,3,5,6-四氟苄基溴(Ⅱ)(28.4g,100mmol),三乙胺(21.6mL,150mmol),N,N-二甲基甲酰胺150mL,搅拌溶解后0℃下滴加叔丁基二甲基氯硅烷(16.6g,110mmol),滴加完毕后缓慢升温至25℃,保温反应3h。TLC跟踪反应进程(展开剂石油醚:乙酸乙酯=10:1,V:V),反应完成后,过滤除去不溶物,减压蒸发去除大部分溶剂,残留物中加入水150mL洗涤两次,乙酸乙酯(2×60mL)萃取,合并有机相,经无水硫酸钠干燥、过滤,滤液减压浓缩去除溶剂得化合物(Ⅲ-b)(21.9g,收率70%),产物为无色结晶固体,熔点40-41℃。
实施例四:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-a)(8.6g,20mmol)、碘化亚铜(0.4g,2mmol)、1,10-菲罗啉(0.7g,4mmol)、碳酸铯(13.1g,40mmol),再加入60mL甲苯和三甲基硅基乙炔(4.2mL,30mmol),在30-35℃下剧烈搅拌20h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,待温度降至室温,向反应体系中加入四丁基氟化铵(7.8g,30mmol)继续反应4h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,甲苯(2×30mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.6g,收率59%),产物为白色固体,熔点51-53℃;1H NMR(400MHz,CDCl3):δ=6.24(t,J=7.0Hz,1H),5.17(d,J=7.0Hz,2H),4.77(s,2H),2.31(s,1H);13C NMR(400MHz,CDCl3):δ=144.9(dmc,J=246.5Hz),143.7(dmc,J=251.5Hz),116.3(t,J=17.9Hz),114.2(t,J=12.8Hz),80.1(p,J=3.7Hz),77.9,52.8(tt,J=3.9,2.0Hz),21.0;MS(ESI):m/z(%)=219[M+H]+。
实施例五:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-a)(8.6g,20mmol)、碘化亚铜(0.4g,2mmol)、1,10-菲罗啉(0.7g,4mmol)、碳酸铯(13.1g,40mmol),再加入60mL甲苯和三异丙基硅基乙炔(5.5g,30mmol),在30-35℃下剧烈搅拌20h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,待温度降至室温,向反应体系中加入四丁基氟化铵(7.8g,30mmol)继续反应4h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,甲苯(2×30mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.3g,收率52%),产物为白色固体,熔点50-51℃。
实施例六:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-b)(7.7g,20mmol)、碘化亚铜(0.4g,2mmol)、1,10-菲罗啉(0.7g,4mmol)、碳酸铯(13.1g,40mmol),再加入60mL甲苯和三异丙基硅基乙炔(5.5g,30mmol),在20-25℃下剧烈搅拌26h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,向反应体系中加入四丁基氟化铵(7.8g,30mmol)于室温下继续反应4h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,甲苯(2×30mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.5g,收率58%),产物为白色固体,熔点51-53℃。
实施例七:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-b)(7.7g,20mmol)、碘化亚铜(0.4g,2mmol)、1,10-菲罗啉(0.7g,4mmol)、碳酸铯(13.1g,40mmol),再加入60mL甲苯和三甲基硅基乙炔(4.2mL,30mmol),在30-35℃下剧烈搅拌20h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,待温度降至室温,向反应体系中加入四丁基氟化铵(7.8g,30mmol)继续反应4h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,甲苯(2×30mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.9g,收率67%),产物为白色固体,熔点52-53℃。
实施例八:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-b)(7.7g,20mmol)、碘化亚铜(0.4g,2mmol)、1,10-菲罗啉(0.5g,3mmol)、碳酸铯(13.1g,40mmol),再加入60mL甲苯和三甲基硅基乙炔(4.2mL,30mmol),在30-35℃下剧烈搅拌20h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,待温度降至室温,向反应体系中加入四丁基氟化铵(7.8g,30mmol)继续反应4h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,甲苯(2×30mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.8g,收率65%),产物为白色固体,熔点50-52℃。
实施例九:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-b)(7.7g,20mmol)、碘化亚铜(0.4g,2mmol)、1,10-菲罗啉(0.7g,4mmol)、碳酸铯(13.1g,40mmol),再加入60mL乙腈和三甲基硅基乙炔(4.2mL,30mmol),在35-40℃下剧烈搅拌18h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,待温度降至室温,向反应体系中加入四丁基氟化铵(7.8g,30mmol)继续反应4h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液减压浓缩去除溶剂,残留物依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,乙酸乙酯(2×40mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.7g,收率62%),熔点53-55℃。
实施例十:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-b)(7.7g,20mmol)、碘化亚铜(0.4g,2mmol)、1,10-菲罗啉(0.7g,4mmol)、碳酸铯(13.1g,40mmol),再加入60mL四氢呋喃和三甲基硅基乙炔(4.2mL,30mmol),在35-40℃下剧烈搅拌18h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,待温度降至室温,向反应体系中加入四丁基氟化铵(7.8g,30mmol)继续反应4h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液减压浓缩去除溶剂,残留物依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,乙酸乙酯(2×40mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.3g,收率53%),熔点51-53℃。
实施例十一:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-b)(7.7g,20mmol)、碘化亚铜(0.4g,2mmol)、1,10-菲罗啉(0.7g,4mmol)、碳酸钾(5.5g,40mmol),再加入60mL甲苯和三甲基硅基乙炔(4.2mL,30mmol),在35-40℃下剧烈搅拌18h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,待温度降至室温,向反应体系中加入四丁基氟化铵(7.8g,30mmol)继续反应4h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,甲苯(2×30mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.0g,收率47%),产物为白色固体,熔点51-52℃。
实施例十二:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-b)(7.7g,20mmol)、碘化亚铜(0.4g,2mmol)、1,10-菲罗啉(0.7g,4mmol)、氢氧化钠(1.6g,40mmol),再加入60mL甲苯和三甲基硅基乙炔(4.2mL,30mmol),在45-50℃下剧烈搅拌15h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,待温度降至室温,向反应体系中加入四丁基氟化铵(7.8g,30mmol)继续反应4h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,甲苯(2×30mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(1.9g,收率44%),产物为白色固体,熔点51-53℃。
实施例十三:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-b)(7.7g,20mmol)、溴化亚铜(0.3g,2mmol)、1,10-菲罗啉(0.7g,4mmol)、碳酸铯(13.1g,40mmol),再加入60mL甲苯和三甲基硅基乙炔(4.2mL,30mmol),在35-40℃下剧烈搅拌18h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,待温度降至室温,向反应体系中加入四丁基氟化铵(7.8g,30mmol)继续反应4h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,甲苯(2×30mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.1g,收率49%),产物为白色固体,熔点52-53℃。
实施例十四:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-b)(7.7g,20mmol)、碘化亚铜(0.8g,4mmol)、1,10-菲罗啉(1.1g,6mmol)、碳酸铯(13.1g,40mmol),再加入60mL甲苯和三甲基硅基乙炔(4.2mL,30mmol),在35-40℃下剧烈搅拌18h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,向反应体系中加入四丁基氟化铵(7.8g,30mmol),35℃下继续反应3h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,甲苯(2×30mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.6g,收率61%),产物为白色固体,熔点51-53℃。
实施例十五:4-炔丙基-2,3,5,6-四氟苄醇(Ι)的制备
100mL反应瓶中依次加入化合物(Ⅲ-b)(7.7g,20mmol)、碘化亚铜(0.8g,4mmol)、1,10-菲罗啉(1.4g,8mmol)、碳酸铯(13.1g,40mmol),再加入60mL甲苯和三甲基硅基乙炔(4.2mL,30mmol),在35-40℃下剧烈搅拌18h。TLC跟踪反应进程(展开剂为石油醚),反应完全后,向反应体系中加入四丁基氟化铵(7.8g,30mmol),35℃下继续反应3h。TLC跟踪反应进程(展开剂为石油醚),反应结束后,将混合物过滤去除不溶物,滤液依次用稀盐酸(1N,40mL)洗涤一次,水40mL洗涤一次,甲苯(2×30mL)萃取,合并有机相,经无水硫酸钠干燥,过滤,滤液减压浓缩去除溶剂得油状物,用石油醚重结晶后得4-炔丙基-2,3,5,6-四氟苄醇(Ι)(2.5g,收率59%),产物为白色固体,熔点49-50℃。
最后应当说明的是,以上所述仅是本发明的优选实施方式,用以说明本发明的技术方案而非限制本发明。
Claims (10)
1.一种4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,其特征在于,所述合成方法包括如下步骤:
(A)以4-羟甲基-2,3,5,6-四氟苄基溴(II)为原料,加入氯硅烷试剂、有机溶剂和碱性物质,于0~30℃下搅拌反应2~10h,TLC跟踪监测至反应完成,之后反应液经后处理,得到化合物(III);
所述4-羟甲基-2,3,5,6-四氟苄基溴(II)、碱性物质、氯硅烷试剂的物质的量之比为1.0:1.0~5.0:1.0~2.0;
所述氯硅烷试剂选自叔丁基二甲基氯硅烷或三异丙基氯硅烷;
(B)将化合物(III)与化合物(IV)溶解在反应溶剂中,在铜盐催化以及1,10-菲罗啉配体和碱性物质的共同作用下,于10~50℃搅拌反应15~30h,TLC跟踪监测至反应完全后,向反应体系中加入四丁基氟化铵,于20~40℃下继续搅拌反应2~7h,TLC跟踪监测至反应完成,之后反应液经后处理,得到目标产物4-炔丙基-2,3,5,6-四氟苄醇(Ι);
所述化合物(III)、化合物(IV)、铜盐、1,10-菲罗啉、碱性物质的物质的量之比为1.0:1.0~2.5:0.05~0.5:0.1~1.0:1.0~3.0;
所述四丁基氟化铵用量为化合物(III)的物质的量的1.0~4.0倍;
式(III)中,PG代表羟基保护基团,表示叔丁基二甲基硅烷或三异丙基硅烷;
式(IV)中,R代表端炔保护基团,表示三甲基硅烷或三异丙基硅烷。
2.如权利要求1所述4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,其特征在于,步骤(A)中,所述碱性物质选自三乙胺、咪唑、吡啶、二异丙基乙基胺、碳酸钾或碳酸钠。
3.如权利要求1所述4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,其特征在于,步骤(A)中,所述的有机溶剂选自四氢呋喃、2-甲基四氢呋喃、二氯甲烷、三氯甲烷、乙腈、N,N-二甲基甲酰胺中的一种或两种以上任意比例的混合溶剂。
4.如权利要求1所述4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,其特征在于,步骤(A)中,所述有机溶剂的体积用量以4-羟甲基-2,3,5,6-四氟苄基溴(II)的质量计为3~20mL/g。
5.如权利要求1所述4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,其特征在于,步骤(A)中,所述后处理的方法为:反应完成后,滤除不溶物,滤液用水洗涤后,经二氯甲烷萃取,合并有机相,经无水硫酸钠干燥、过滤,滤液减压蒸除溶剂并干燥,得到化合物(III)。
6.如权利要求1所述4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,其特征在于,步骤(B)中,所述铜盐选自溴化亚铜、碘化亚铜或氯化亚铜。
7.如权利要求1所述4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,其特征在于,步骤(B)中,所述碱性物质选自碳酸钠、碳酸钾、碳酸铯、碳酸银、叔丁醇钾、氢氧化钠、氢氧化钾、醋酸钠、三乙胺中的一种或两者以上任意比例的混合物。
8.如权利要求1所述4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,其特征在于,步骤(B)中,所述反应溶剂选自甲苯、N,N-二甲基甲酰胺、乙腈、四氢呋喃、乙醚中的一种或两种以上任意比例的混合溶剂。
9.如权利要求1所述4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,其特征在于,步骤(B)中,所述反应溶剂的体积用量以化合物(III)的质量计为3~20mL/g。
10.如权利要求1所述4-炔丙基-2,3,5,6-四氟苄醇(Ι)的合成方法,其特征在于,步骤(B)中,所述后处理的方法为:反应结束后,滤除不溶物,滤液依次用稀盐酸、水洗涤,甲苯萃取,合并有机相,经无水硫酸钠干燥、过滤,滤液减压蒸除溶剂得到粗品,经重结晶纯化,得到目标产物(Ι)。
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