CN115353457B - 一种不对称碳酸酯及其制备方法 - Google Patents
一种不对称碳酸酯及其制备方法 Download PDFInfo
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- CN115353457B CN115353457B CN202211039732.2A CN202211039732A CN115353457B CN 115353457 B CN115353457 B CN 115353457B CN 202211039732 A CN202211039732 A CN 202211039732A CN 115353457 B CN115353457 B CN 115353457B
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- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 64
- 238000000034 method Methods 0.000 claims abstract description 35
- 239000002904 solvent Substances 0.000 claims abstract description 21
- 239000003513 alkali Substances 0.000 claims abstract description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 60
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 57
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 39
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 27
- -1 alcohol compound Chemical class 0.000 claims description 21
- 239000003208 petroleum Substances 0.000 claims description 18
- 239000003480 eluent Substances 0.000 claims description 17
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 10
- 238000004440 column chromatography Methods 0.000 claims description 9
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 7
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 6
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 claims description 5
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 claims description 5
- 125000001424 substituent group Chemical group 0.000 claims description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 2
- 239000004305 biphenyl Substances 0.000 claims description 2
- 235000010290 biphenyl Nutrition 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 abstract description 12
- 239000002994 raw material Substances 0.000 abstract description 10
- 150000001298 alcohols Chemical class 0.000 abstract description 6
- 239000003054 catalyst Substances 0.000 abstract description 6
- 238000003786 synthesis reaction Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000003792 electrolyte Substances 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 3
- 238000005580 one pot reaction Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 21
- 125000000217 alkyl group Chemical group 0.000 description 13
- 239000003921 oil Substances 0.000 description 12
- 238000010898 silica gel chromatography Methods 0.000 description 11
- 239000007787 solid Substances 0.000 description 8
- BYEAHWXPCBROCE-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropan-2-ol Chemical compound FC(F)(F)C(O)C(F)(F)F BYEAHWXPCBROCE-UHFFFAOYSA-N 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- AXCHZLOJGKSWLV-UHFFFAOYSA-N (4-phenylphenyl)methanol Chemical compound C1=CC(CO)=CC=C1C1=CC=CC=C1 AXCHZLOJGKSWLV-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 229910052731 fluorine Inorganic materials 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 4
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 4
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 230000002194 synthesizing effect Effects 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000005809 transesterification reaction Methods 0.000 description 3
- VAJVDSVGBWFCLW-UHFFFAOYSA-N 3-Phenyl-1-propanol Chemical compound OCCCC1=CC=CC=C1 VAJVDSVGBWFCLW-UHFFFAOYSA-N 0.000 description 2
- 229960000549 4-dimethylaminophenol Drugs 0.000 description 2
- GDWRKZLROIFUML-UHFFFAOYSA-N 4-phenylbutan-2-ol Chemical compound CC(O)CCC1=CC=CC=C1 GDWRKZLROIFUML-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 125000003710 aryl alkyl group Chemical group 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000012230 colorless oil Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000012973 diazabicyclooctane Substances 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 125000000623 heterocyclic group Chemical group 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005832 oxidative carbonylation reaction Methods 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- GETTZEONDQJALK-UHFFFAOYSA-N (trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=CC=C1 GETTZEONDQJALK-UHFFFAOYSA-N 0.000 description 1
- VWIHWVBGVWJAPL-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropan-2-yl hydrogen carbonate Chemical compound OC(=O)OC(C(F)(F)F)C(F)(F)F VWIHWVBGVWJAPL-UHFFFAOYSA-N 0.000 description 1
- VLHYAWNCTMZTSC-UHFFFAOYSA-N 1,1,3,3,3-pentafluoropropan-1-ol Chemical compound OC(F)(F)CC(F)(F)F VLHYAWNCTMZTSC-UHFFFAOYSA-N 0.000 description 1
- DEUJSGDXBNTQMY-UHFFFAOYSA-N 1,2,2-trifluoroethanol Chemical compound OC(F)C(F)F DEUJSGDXBNTQMY-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- SUHKSQTXXZQEBH-UHFFFAOYSA-N 1-benzothiophen-2-ylmethanol Chemical compound C1=CC=C2SC(CO)=CC2=C1 SUHKSQTXXZQEBH-UHFFFAOYSA-N 0.000 description 1
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-methyl-1H-imidazole Chemical compound CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 description 1
- KYUUZCUXYXNPFO-UHFFFAOYSA-N 2,4-dinitro-1-(trifluoromethoxy)benzene Chemical compound [O-][N+](=O)C1=CC=C(OC(F)(F)F)C([N+]([O-])=O)=C1 KYUUZCUXYXNPFO-UHFFFAOYSA-N 0.000 description 1
- YQHJFPFNGVDEDT-UHFFFAOYSA-N 2-tert-butyl-1,1,3,3-tetramethylguanidine Chemical compound CN(C)C(N(C)C)=NC(C)(C)C YQHJFPFNGVDEDT-UHFFFAOYSA-N 0.000 description 1
- NITUNGCLDSFVDL-UHFFFAOYSA-N 3-phenylprop-2-yn-1-ol Chemical compound OCC#CC1=CC=CC=C1 NITUNGCLDSFVDL-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- CRFWPRGVIUNSQD-UHFFFAOYSA-N C1=CC=C(C=C1)COC(=O)OC(C(F)(F)F)C(F)(F)F Chemical compound C1=CC=C(C=C1)COC(=O)OC(C(F)(F)F)C(F)(F)F CRFWPRGVIUNSQD-UHFFFAOYSA-N 0.000 description 1
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- GCXUHGZBBGZTII-UHFFFAOYSA-N a828071 Chemical compound ClC(Cl)=O.ClC(Cl)=O GCXUHGZBBGZTII-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- 125000005619 boric acid group Chemical group 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/96—Esters of carbonic or haloformic acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
- C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
- C07D233/66—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two 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
- C07D233/91—Nitro radicals
- C07D233/92—Nitro radicals attached in position 4 or 5
- C07D233/94—Nitro radicals attached in position 4 or 5 with hydrocarbon radicals, substituted by oxygen or sulfur atoms, attached to other ring members
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more 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, directly attached to ring carbon atoms
- C07D239/32—One oxygen, sulfur or nitrogen atom
- C07D239/42—One nitrogen atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
- C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
- C07D333/54—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring
- C07D333/56—Radicals substituted by oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02P20/141—Feedstock
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
本发明公开了一种不对称碳酸酯及其制备方法,所述的不对称碳酸酯由两种不同的醇类化合物与R‑OCF3直接一锅反应制备。其具体步骤为:将两种不同的醇类化合物与R‑OCF3、碱混合于溶剂中进行反应,反应结束后,经过分离纯化得到目标产物。本发明方法反应条件温和、原料价廉易得、操作简单、底物适用范围广,并且能够以中等至良好的产率、选择性地获得不对称碳酸酯产物。这些不对称碳酸酯有望在功能分子合成和电解液开发等领域得到应用。
Description
技术领域
本发明属于有机合成领域,尤其涉及一种不对称碳酸酯的制备方法。
背景技术
不对称碳酸酯已广泛用于药物合成、香料及中间体的合成、发泡剂和润滑油的合成、以及用作锂电池电解质溶剂等,但是它们普遍都是以简单的烷基醇为原料来合成的,化学结构较为简单。关于结构复杂的不对称碳酸酯的报道还比较少见。
目前,不对称碳酸酯的合成方法主要有三种:光气法、氧化羰基化法、酯交换法:1)光气法在上世纪就已经被广泛应用,它以碳酰氯(光气)和醇为原料、碱为催化剂,在室温下反应,即可制备相应的碳酸酯。该方法通常需要分批加入两种不同的醇、操作繁琐,在得到不对称碳酸酯的同时还会产生两种对称的碳酸酯产物,反应选择性较差。此外,该反应还会生成一些具有强腐蚀性的副产物,使用的原料碳酰氯(光气)也是剧毒的,会对操作人员造成一定的危害。2)氧化羰基化法是一种以醇、CO和O2为原料、在催化剂作用下制备碳酸酯的方法。根据反应相态不同,还可分为液相法和气相法:液相法是通过向醇的体系中通入原料气体,高压反应,虽然操作简单,但是需要使用高压反应釜,有一定的安全隐患。此外,液相法还存在产物分离困难的问题,并且由于反应中有水生成,催化剂的寿命也受到了较大的影响。气相法能够克服液相法反应压力高、催化剂寿命短等缺点,但是还存在原料转化率低、反应选择性差、容易同时生成对称的碳酸酯产物等缺点,从而导致其目标产物分离困难、底物适用性差等问题。3)酯交换法主要包括酯与醇之间的反应和酯与酯之间的反应,该方法需要催化剂的参与才能顺利进行。酯交换法操作简单、绿色环保、反应选择性较好,被认为是最有前景的不对称碳酸酯的合成方法,但是这种方法主要适用于简单饱和烷基不对称碳酸酯的合成。因此,开发一种条件温和、操作简单、安全高效的方法,以极高的转化率和产率、优秀的反应选择性,方便地合成结构复杂、含有多种官能团的不对称碳酸酯,并深入探究这类化合物的用途,显得很有必要。
发明内容
针对现有技术的不足,本发明的目的在于提出一种不对称碳酸酯及其制备方法。利用两种不同的醇类化合物直接合成不对称的碳酸酯,能够有效解决上述方法的不足之处。本发明方法具有原料价廉易得、条件温和、操作简单、底物适用性好且产率优良等优点。
本发明的目的通过以下技术方案实现:
一种不对称碳酸酯,其具有如下的化学结构式:
其中,R’为含6~23个碳原子的烷基、芳烷基、含杂环的烷基和稠环芳烃中的任意一种;R”为烷基、含碳碳双键的烷基、含碳碳三键的烷基和含2~7个氟的烷基中的任意一种。
优选的,所述的不对称碳酸酯,其化学结构式选自以下之一,其中,R1为六氟异丙基,R2为联苯甲基;每个结构式下对应的数值为对应产物的产率,每种产物均做过对应的实验,实施例篇幅有限,故没有全部给出:
上述不对称碳酸酯的制备方法,包括如下步骤:
在保护气体氛围下,取第一醇类化合物、第二醇类化合物、碱和溶剂混合,在-50℃下,加入R-OCF3溶液,升温至-50~120℃反应,反应结束后减压除去溶剂,经过柱层析处理,得到所述不对称碳酸酯。所述的第一醇类化合物具有如下结构式:R’-OH,其中R’为含6~23个碳原子的烷基、芳烷基、含杂环的烷基和稠环芳烃中的任意一种;所述的第二醇类化合物具有如下结构式:R”-OH,其中R”为烷基、含碳碳双键的烷基、含碳碳三键的烷基和含2~7个氟的烷基中的任意一种。
优选的,所述保护气体为氮气。
优选的,所述第一醇类化合物、第二醇类化合物、R-OCF3和碱的摩尔比为1:1:0.2~1:0.2~1;更优选的为1:1:1:1。
优选的,所述R-OCF3为(E)-O-三氟甲基苯甲醛肟、2,4-二硝基三氟甲氧基苯、CF3SO3CF3、C4F9SO3CF3、AgOCF3、CsOCF3、KOCF3、[n-Bu4N][OCF3]、R1-PhCO2CF3和R2-PhSO3CF3中的一种,其中R1和R2分别独立选自苯环邻位、间位、对位取代基中的一种、两种或三种,取代基为氢原子、氟原子、氯原子、溴原子、碘原子、甲基、三氟甲基、甲氧基、三氟甲氧基、乙基、丙基、丁基、苯基、硝基、氰基、羧基、硼酸基、酯基、酮羰基、醛羰基、酰胺基中的一种。
优选的,所述溶剂为二氯甲烷、三氯甲烷、1,2-二氯乙烷、苯、甲苯、二甲苯、1,4-二氧六环、乙腈、丙酮、乙酸乙酯、乙酸丁酯、N,N-二甲基甲酰胺、二甲基亚砜、四氢呋喃、乙醚、异丙醚、甲基叔丁基醚、乙二醇二甲醚和二乙二醇二甲醚中的至少一种;更优选为二氯甲烷。
优选的,所述R-OCF3溶液为R-OCF3的二氯甲烷溶液、R-OCF3的1,2-二氯乙烷溶液、R-OCF3的四氢呋喃溶液、R-OCF3的甲苯溶液、R-OCF3的三氟甲苯溶液、R-OCF3的乙腈溶液和R-OCF3的二乙二醇二甲醚溶液中的至少一种。
优选的,所述碱为Et3N(三乙胺)、DMAP(4-二甲氨基吡啶)、DABCO(三乙烯二胺)、BTMG(2-叔丁基-1,1,3,3-四甲基胍)、N-甲基咪唑、吡啶、CsF、KF、NaF、LiF、K2HPO4、KH2PO4、K3PO4、K2CO3、CaCO3和Cs2CO3中的至少一种,更优选的为Et3N。
优选的,向反应体系中加入R-OCF3的溶液,升温至40~80℃反应。
优选的,所述反应时间为1~48h,更优选的为12~48h。
优选的,所述柱层析处理选择硅胶柱。
优选的,所述柱层析处理的洗脱剂为石油醚和乙酸乙酯中的至少一种。
优选的,所述柱层析处理的洗脱剂为石油醚和乙酸乙酯的混合物,石油醚和乙酸乙酯的体积比为40~1:1。
本发明所述不对称碳酸酯的反应方程式如下:
与现有技术相比,本发明的有益效果包括:
本发明以廉价易得的醇和R-OCF3为原料,加入适量的碱,在非常温和的条件下进行反应,无需加入其它添加剂,即可实现不同醇之间的碳酸酯化,从而选择性地得到不对称的碳酸酯产品。这种方法为合成结构复杂的不对称碳酸酯产物提供了一种高效的策略。本发明制备的产物在电解液、以及作为医药和材料中间体等方面具有较好的潜力。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
实施例中,进行柱层析处理时,每次洗脱大概使用700mL洗脱液,流速为0.35L/h,洗脱时间为2小时。
1.C4F9SO3CF3按照如下文献所述的方法制备得到:Angew.Chem.Int.Ed.,2021,60,16171-16177.(doi:10.1002/ange.202104975.)
2.PhCO2CF3按照如下文献所述的方法制备得到:J.Am.Chem.Soc.,2018,140,6801-6805.(doi:10.1021/jacs.8b04000.)
3.AgOCF3按照如下文献所述的方法制备得到:Chem.Commun.,2016,52,7458-7461.(doi:10.1039/c6cc03040h.)
实施例1
一种不对称碳酸酯的制备方法,步骤如下:
在氮气保护下,向史林克管中加入4-联苯甲醇(0.2mmol,36.9mg)、六氟异丙醇(0.2mmol,33.6mg)及三乙胺(0.2mmol,20.2mg)的二氯甲烷(1.5mL)溶液;随后冷却至-50℃,加入CF3SO3CF3(0.2mmol,43.7mg)的二氯甲烷(0.5mL)溶液;然后置于40℃的油浴中搅拌反应12小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=20:1(v/v)为洗脱剂,即可得到产物:4-联苯甲基六氟异丙基碳酸酯(白色固体,68.8mg),产率:91%。1H NMR(500MHz,CDCl3)δ7.66(d,J=7.8Hz,2H),7.62(d,J=7.8Hz,2H),7.50-7.47(m,4H),7.40(t,J=7.3Hz,1H),5.61(m,1H),5.36(s,2H).19F NMR(471MHz,CDCl3):δ=-73.5(d,J=5.8Hz,6F).13C NMR(126MHz,CDCl3)δ152.9,142.2,140.4,132.5,129.0,128.9,127.7,127.6,127.2,120.2(q,J=285.5Hz),71.8,70.4(m).
本实施例的化学反应方程式为:
实施例2
一种不对称碳酸酯的制备方法,步骤如下:
在氮气保护下,向史林克管中加入3-苯基-2-丙炔-1-醇(0.2mmol,26.4mg)、六氟异丙醇(0.2mmol,33.6mg)及三乙胺(0.2mmol,20.2mg)的1,2-二氯乙烷(1.5mL)溶液;随后冷却至-50℃,加入CF3SO3CF3(0.2mmol,43.7mg)的1,2-二氯乙烷(0.5mL)溶液;然后置于40℃的油浴中搅拌反应12小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=10:1(v/v)为洗脱剂,即可得到产物:3-苯基-2-丙炔基六氟异丙基碳酸酯(无色油状液体,44.4mg),产率:68%。1H NMR(500MHz,CDCl3)δ7.48-7.46(m,2H),7.39-7.32(m,3H),5.60(m,1H),5.11(s,1H).19F NMR(471MHz,CDCl3):δ=-73.5(d,J=5.8Hz,6F).13C NMR(126MHz,CDCl3)δ151.5,130.9,128.2,127.4,120.5,119.1(q,J=283.5Hz),87.7,79.5,69.5(m),57.5.
本实施例的化学反应方程式为:
实施例3
在氮气保护下,向史林克管中加入1-苯并噻吩-2-甲醇(0.2mmol,32.8mg)、六氟异丙醇(0.2mmol,33.6mg)及DMAP(0.2mmol,24.4mg)的四氢呋喃(1.5mL)溶液;随后冷却至-50℃,加入CF3SO3CF3(0.2mmol,43.7mg)的四氢呋喃(0.5mL)溶液;然后置于80℃的油浴中搅拌反应48小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=10:1(v/v)为洗脱剂,即可得到产物:1-苯并噻吩-2-甲基六氟异丙基碳酸酯(白色固体,41.6mg),产率:58%。1H NMR(500MHz,CDCl3)δ7.85-7.83(m,1H),7.80-7.79(m,1H),7.41(s,1H),7.39-7.36(m,2H),5.59(m,1H),5.53(s,2H).19F NMR(471MHz,CDCl3):δ=-73.4(d,J=6.7Hz,6F).13C NMR(126MHz,CDCl3)δ152.8,140.8,138.9,135.8,126.0,125.3,124.7,124.2,122.5,120.1(q,J=282.6Hz),70.5(m),66.8.
本实施例的化学反应方程式为:
实施例4
在氮气保护下,向史林克管中加入2-萘甲醇(0.2mmol,31.6mg)与六氟异丙醇(0.2mmol,33.6mg)的二氯甲烷(1.5mL)溶液和CsF(0.2mmol,30.4mg);随后冷却至-50℃,加入PhCO2CF3(0.2mmol,38.0mg)的二氯甲烷(0.5mL)溶液;然后置于40℃的油浴中搅拌反应12小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=20:1(v/v)为洗脱剂,即可得到产物:2-萘甲基六氟异丙基碳酸酯(白色固体,47.9mg),产率:68%。1H NMR(500MHz,CDCl3)δ7.90-7.86(m,4H),7.55-7.53(m,2H),7.50-7.48(m,1H),5.62(m,1H),5.47(s,1H).19F NMR(471MHz,CDCl3):δ=-73.5(d,J=5.7Hz,6F).13C NMR(126MHz,CDCl3)δ152.9,133.5,133.1,131.0,128.8,128.1,128.0,127.8,126.8,126.6,125.5,120.2(q,J=282.6Hz),72.2,70.4(m).
本实施例的化学反应方程式为:
实施例5
在氮气保护下,向史林克管中加入3-苯丙醇(0.2mmol,27.2mg)和六氟异丙醇(0.2mmol,33.6mg)及DABCO(0.2mmol,22.4mg)的二氯甲烷(1.5mL)溶液;随后冷却至-50℃,加入AgOCF3(0.2mmol,38.6mg)的二氯甲烷(0.5mL)溶液;然后置于80℃的油浴中搅拌反应1小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=20:1(v/v)为洗脱剂,即可得到产物:3-苯丙基六氟异丙基碳酸酯(无色油状液体,15.2mg),产率:23%。1H NMR(500MHz,CDCl3)δ7.32-7.30(m,2H),7.24-7.18(m,3H),5.58-5.55(m,1H),4.30(t,J=6.3Hz,2H),2.76-2.73(m,2H),2.09-2.05(m,2H).19F NMR(471MHz,CDCl3):δ=-73.5(d,J=5.3Hz,6F).13C NMR(126MHz,CDCl3)δ152.9,140.4,128.6,128.4,126.3,120.3(q,J=282.3Hz),70.3(m),69.8,31.6,29.9.
本实施例的化学反应方程式为:
实施例6
在氮气保护下,向史林克管中加入4-联苯甲醇(0.2mmol,36.9mg)与乙醇(0.2mmol,9.2mg)的乙腈(1.5mL)溶液和KH2PO4(0.04mmol,5.4mg);随后冷却至-50℃,快速加入CF3SO3CF3(0.2mmol,43.7mg)的乙腈(0.5mL)溶液;然后置于80℃的油浴中搅拌反应24小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=10:1(v/v)为洗脱剂,即可得到产物:乙基4-联苯甲基碳酸酯(白色固体,18.0mg),产率:35%。1H NMR(500MHz,CDCl3)δ7.61-7.59(m,4H),7.48-7.44(m,4H),7.37(t,J=7.3Hz,1H),5.21(s,2H),4.24(q,J=7.1Hz,2H),1.33(t,J=7.1Hz,3H).13C NMR(126MHz,CDCl3)δ155.2,141.5,140.7,134.4,128.8,127.5,127.4,127.2,69.2,64.2,14.3.
本实施例的化学反应方程式为:
实施例7
在氮气保护下,向史林克管中加入4-联苯甲醇(0.2mmol,36.9mg)、环己醇(0.2mmol,20mg)及三乙胺(0.2mmol,20.2mg)的二氯甲烷(1.5mL)溶液;随后冷却至-50℃,加入CF3SO3CF3(0.1mmol,21.9mg)的二氯甲烷(0.5mL)溶液;然后置于-50℃的油浴中搅拌反应24小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=10:1(v/v)为洗脱剂,即可得到产物:环己基4-联苯甲基碳酸酯(白色固体,13.7mg),产率:22%。1H NMR(500MHz,CDCl3)δ7.61-7.59(m,4H),7.48-7.44(m,4H),7.38-7.35(m,1H),5.20(s,2H),4.66(m,1H),1.97-1.93(m,2H),1.79-1.75(m,2H),1.59-1.54(m,2H),1.49-1.37(2H),1.36-1.28(m,2H).13C NMR(126MHz,CD3CN)δ154.5,140.9,140.4,135.3,128.9,128.7,127.6,127.1,127.0,76.6,68.5,31.2,25.0,23.3.
本实施例的化学反应方程式为:
实施例8
在氮气保护下,向史林克管中加入4-联苯甲醇(0.2mmol,36.9mg)与2,2,3,3,3-五氟丙醇(0.2mmol,30mg)的二氯甲烷(1.5mL)溶液和K2CO3(0.1mmol,13.8mg);随后冷却至-50℃,快速加入CF3SO3CF3(0.2mmol,43.7mg)的二氯甲烷(0.5mL)溶液;然后置于80℃的油浴中搅拌反应12小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=40:1(v/v)为洗脱剂,即可得到产物:4-联苯甲基-2,2,3,3,3-五氟丙基碳酸酯(白色固体,38.9mg),产率:54%。1H NMR(500MHz,CDCl3)δ7.63-7.59(m,4H),7.48-7.45(m,4H),7.38(t,J=7.3Hz,1H),5.28(s,2H),4.63(t,J=12.7Hz,2H).19F NMR(471MHz,CDCl3):δ=-83.8(s,3F),-123.9(t,J=13.4Hz,2F).13C NMR(126MHz,CDCl3)δ154.0,142.0,140.5,133.3,129.0,128.9,127.6,127.5,127.2,118.4(qt,J=286.2,34.5Hz),111.7(tq,J=254.1,38.2Hz),70.7,62.4(t,J=27.8Hz).
本实施例的化学反应方程式为:
实施例9
在氮气保护下,向史林克管中加入4-联苯甲醇(0.2mmol,36.9mg)、2,2,2-三氟乙醇(0.2mmol,20mg)及三乙胺(0.2mmol,20.2mg)的二氯甲烷(1.5mL)溶液;随后冷却至-50℃,快速加入CF3SO3CF3(0.04mmol,8.7mg)的二氯甲烷(0.5mL)溶液;然后置于40℃的油浴中搅拌反应12小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=10:1(v/v)为洗脱剂,即可得到产物:4-联苯甲基-2,2,2-三氟乙基碳酸酯(白色固体,20.5mg),产率:33%。1H NMR(500MHz,CDCl3)δ7.63-7.59(m,4H),7.49-7.45(m,4H),7.39-7.36(m,1H),5.28(s,2H),4.54(q,J=8.2Hz,2H).19F NMR(471MHz,CDCl3):δ=-74.2(t,J=8.8Hz,3F).13C NMR(126MHz,CDCl3)δ152.9,140.9,139.5,132.3,128.0,127.8,126.6,126.4,126.1,121.5(q,J=277.6Hz),69.5,62.5(q,J=37.0Hz).
本实施例的化学反应方程式为:
实施例10
在氮气保护下,向史林克管中加入4-联苯甲醇(0.2mmol,36.9mg)、2,2,-二氟乙醇(0.2mmol,16.4mg)及三乙胺(0.2mmol,20.2mg)的二氯甲烷(1.5mL)溶液;随后冷却至-50℃,快速加入CF3SO3CF3(0.2mmol,43.7mg)的二氯甲烷(0.5mL)溶液;然后置于80℃的油浴中搅拌反应12小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=20:1(v/v)为洗脱剂,即可得到产物:4-联苯甲基-2,2,-二氟乙基碳酸酯(白色固体,34.5mg),产率:59%。1H NMR(500MHz,CDCl3)δ7.63-7.59(m,4H),7.49-7.45(m,4H),7.38(t,J=7.3Hz,1H),5.99(tt,J=54.9,3.9Hz,1H),5.26(s,2H),4.36(td,J=13.3,4.0Hz,2H).19F NMR(471MHz,CDCl3):δ=-126.0(dt,J=54.8,13.3Hz,2F).13C NMR(126MHz,CDCl3)δ154.5,141.8,140.5,133.6,129.0,128.9,127.6,127.5,127.2,112.4(t,J=214.5Hz),70.2,65.6(t,J=30.3Hz).
本实施例的化学反应方程式为:
实施例11
在氮气保护下,向史林克管中加入4-苯基-2-丁醇(0.2mmol,30mg)、六氟异丙醇(0.2mmol,33.6mg)及三乙胺(0.2mmol,20.2mg)的二乙二醇二甲醚(1.5mL)溶液;随后冷却至-50℃,快速加入CF3SO3CF3(0.2mmol,43.7mg)的二乙二醇二甲醚(0.5mL)溶液;然后置于120℃的油浴中搅拌反应12小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=40:1(v/v)为洗脱剂,即可得到产物:4-苯基-2-丁基六氟异丙基碳酸酯(无色油状,54.4mg),产率:79%。1H NMR(500MHz,CDCl3)δ7.31(t,J=7.5Hz,2H),7.22(t,J=7.3Hz,1H),7.17(d,J=7.4Hz,2H),5.58(m,1H),4.87(m,1H),2.77-2.64(m,2H),2.11-2.03(m,1H),1.94-1.87(m,1H),1.39(d,J=6.3Hz,3H).19F NMR(471MHz,CDCl3):δ=-73.6(d,J=4.2Hz,6F).13C NMR(126MHz,CDCl3)δ152.4,140.7,128.6,128.3,126.2,120.3(q,J=283.0Hz),78.2,70.1(m),37.2,31.4,19.6.
本实施例的化学反应方程式为:
实施例12
在氮气保护下,向史林克管中加入苯甲醇(0.2mmol,21.6mg)、六氟异丙醇(0.2mmol,33.6mg)及三乙胺(0.2mmol,20.2mg)的二氯甲烷(1.5mL)溶液;随后冷却至-50℃,快速加入C4F9SO3CF3(0.2mmol,73.6mg)的二氯甲烷(0.5mL)溶液;然后置于40℃的油浴中搅拌反应12小时。反应结束后,减压蒸馏除去溶剂,所得残留物用硅胶柱层析纯化,以石油醚:乙酸乙酯=40:1(v/v)为洗脱剂,即可得到产物:苯甲基六氟异丙基碳酸酯(无色油状,37.5mg),产率:62%。1H NMR(500MHz,CDCl3)δ7.41(s,5H),5.59(m,1H),5.30(s,2H).19FNMR(471MHz,CDCl3):δ=-73.5(d,J=5.3Hz,6F).13C NMR(126MHz,CDCl3)δ152.9,133.6,129.2,128.8,128.5,120.2(q,J=283.0Hz),72.0,70.4(m).
本实施例的化学反应方程式为:
现有电解液成分中含有一些简单对称结构的碳酸酯以及一些含氟化合物,本申请设想将制得的不对称且含氟的碳酸酯替代这些简单结构的碳酸酯成分,来提升其性能,使其电导率提高1~5%。
以上所述本发明的具体实施方式,并不构成对本发明保护范围的限定。任何根据本发明的技术构思所做出的各种其他相应的改变与变形,均应包含在本发明权利要求的保护范围内。
Claims (5)
1.一种不对称碳酸酯的制备方法,其特征在于,包括如下步骤:
在保护气体氛围下,取第一醇类化合物、第二醇类化合物、碱和溶剂混合,在-50℃下,加入R-OCF3在同一溶剂中的溶液,升温至-50~120℃反应,反应结束后减压除去溶剂,经过柱层析处理,得到所述的不对称碳酸酯;所述的第一醇类化合物具有如下结构式:R’-OH;所述的第二醇类化合物具有如下结构式:R’’-OH,其中R’和R’’为所述不对称碳酸酯所对应的基团;
所述不对称碳酸酯的反应方程式如下:
所述不对称碳酸酯的化学结构式选自以下之一,其中,R1为六氟异丙基,R2为联苯甲基:
;
所述的R-OCF3为CF3SO3CF3、C4F9SO3CF3、AgOCF3和R1-PhCO2CF3中的一种,其中R1选自苯环邻位、间位、对位取代基中的一种、两种或三种,取代基为氢原子;
所述溶剂为二氯甲烷、1,2-二氯乙烷、四氢呋喃、乙腈和二乙二醇二甲醚中的至少一种;
所述的碱为三乙胺、4-二甲氨基吡啶、CsF、三乙烯二胺、KH2PO4和K2CO3中的至少一种。
2. 根据权利要求1所述的一种不对称碳酸酯的制备方法,其特征在于,所述的第一醇类化合物、第二醇类化合物、R-OCF3和碱的摩尔比为1 : 1 : 0.2~1 : 0.2~1。
3.根据权利要求1或2所述的一种不对称碳酸酯的制备方法,其特征在于,向反应体系中加入R-OCF3溶液,升温至40~80℃反应;
所述反应时间为1~48h;
所述保护气体为氮气。
4.根据权利要求1或2所述的一种不对称碳酸酯的制备方法,其特征在于,
所述的柱层析处理选择硅胶柱;
所述的柱层析处理的洗脱剂为石油醚和乙酸乙酯中的至少一种。
5. 根据权利要求4所述的一种不对称碳酸酯的制备方法,其特征在于,所述的柱层析处理的洗脱剂为石油醚和乙酸乙酯的混合物,石油醚和乙酸乙酯的体积比为40~1 : 1。
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