CN111592567B - 一种双齿膦烯配体的合成方法 - Google Patents
一种双齿膦烯配体的合成方法 Download PDFInfo
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- CN111592567B CN111592567B CN202010405022.1A CN202010405022A CN111592567B CN 111592567 B CN111592567 B CN 111592567B CN 202010405022 A CN202010405022 A CN 202010405022A CN 111592567 B CN111592567 B CN 111592567B
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- Prior art keywords
- phosphine
- ligand
- ene
- synthesis
- bidentate phosphine
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- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 239000003446 ligand Substances 0.000 title claims abstract description 60
- 229910000073 phosphorus hydride Inorganic materials 0.000 title claims abstract description 53
- 238000001308 synthesis method Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- -1 alkenyl bromide Chemical compound 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 16
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 16
- 239000003054 catalyst Substances 0.000 claims abstract description 14
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052707 ruthenium Inorganic materials 0.000 claims abstract description 7
- 239000003513 alkali Substances 0.000 claims abstract description 5
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 23
- 239000002904 solvent Substances 0.000 claims description 19
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 11
- 230000002194 synthesizing effect Effects 0.000 claims description 10
- 125000003342 alkenyl group Chemical group 0.000 claims description 9
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 9
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000001632 sodium acetate Substances 0.000 claims description 6
- 235000017281 sodium acetate Nutrition 0.000 claims description 6
- 125000001424 substituent group Chemical group 0.000 claims description 6
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 150000002825 nitriles Chemical class 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- HFPZCAJZSCWRBC-UHFFFAOYSA-N p-cymene Chemical compound CC(C)C1=CC=C(C)C=C1 HFPZCAJZSCWRBC-UHFFFAOYSA-N 0.000 claims description 3
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 2
- 125000006552 (C3-C8) cycloalkyl group Chemical group 0.000 claims description 2
- 239000003849 aromatic solvent Substances 0.000 claims description 2
- 239000002585 base Substances 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 125000002827 triflate group Chemical group FC(S(=O)(=O)O*)(F)F 0.000 claims description 2
- 125000000229 (C1-C4)alkoxy group Chemical group 0.000 claims 2
- 125000002541 furyl group Chemical group 0.000 claims 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims 1
- 125000001544 thienyl group Chemical group 0.000 claims 1
- 238000009776 industrial production Methods 0.000 abstract description 3
- 125000000524 functional group Chemical group 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 17
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 12
- 238000005859 coupling reaction Methods 0.000 description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 10
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 239000000758 substrate Substances 0.000 description 8
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 7
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 7
- 239000004471 Glycine Substances 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 5
- UCXDWSTYBSBFFB-UHFFFAOYSA-L 1-methyl-4-propan-2-ylbenzene;ruthenium(2+);dichloride Chemical class Cl[Ru]Cl.CC(C)C1=CC=C(C)C=C1 UCXDWSTYBSBFFB-UHFFFAOYSA-L 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- ZDSKLNZMDGPXID-UHFFFAOYSA-N [2-[2-[2-(4-methoxyphenyl)ethenyl]phenyl]phenyl]-diphenylphosphane Chemical compound COC1=CC=C(C=C1)C=CC2=CC=CC=C2C3=CC=CC=C3P(C4=CC=CC=C4)C5=CC=CC=C5 ZDSKLNZMDGPXID-UHFFFAOYSA-N 0.000 description 4
- 235000010290 biphenyl Nutrition 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000004440 column chromatography Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- MNSBHZNBVJAJND-VOTSOKGWSA-N 1-[(e)-2-bromoethenyl]-4-methoxybenzene Chemical compound COC1=CC=C(\C=C\Br)C=C1 MNSBHZNBVJAJND-VOTSOKGWSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 150000001345 alkine derivatives Chemical class 0.000 description 3
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 description 3
- 239000004305 biphenyl Substances 0.000 description 3
- GPAYUJZHTULNBE-UHFFFAOYSA-N diphenylphosphine Chemical compound C=1C=CC=CC=1PC1=CC=CC=C1 GPAYUJZHTULNBE-UHFFFAOYSA-N 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229910052703 rhodium Inorganic materials 0.000 description 3
- 239000010948 rhodium Substances 0.000 description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000000967 suction filtration Methods 0.000 description 3
- QJCNLJWUIOIMMF-YUMQZZPRSA-N (2s,3s)-3-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]pentanoic acid Chemical compound CC[C@H](C)[C@@H](C(O)=O)NC(=O)OC(C)(C)C QJCNLJWUIOIMMF-YUMQZZPRSA-N 0.000 description 2
- GETTZEONDQJALK-UHFFFAOYSA-N (trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=CC=C1 GETTZEONDQJALK-UHFFFAOYSA-N 0.000 description 2
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 description 2
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical compound COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- DMEGYFMYUHOHGS-UHFFFAOYSA-N cycloheptane Chemical compound C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- LJOODBDWMQKMFB-UHFFFAOYSA-N cyclohexylacetic acid Chemical compound OC(=O)CC1CCCCC1 LJOODBDWMQKMFB-UHFFFAOYSA-N 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 229960000310 isoleucine Drugs 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- WJKHJLXJJJATHN-UHFFFAOYSA-N triflic anhydride Chemical compound FC(F)(F)S(=O)(=O)OS(=O)(=O)C(F)(F)F WJKHJLXJJJATHN-UHFFFAOYSA-N 0.000 description 2
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- RRKODOZNUZCUBN-CCAGOZQPSA-N (1z,3z)-cycloocta-1,3-diene Chemical compound C1CC\C=C/C=C\C1 RRKODOZNUZCUBN-CCAGOZQPSA-N 0.000 description 1
- RNXMVQFMHXXZLO-UHFFFAOYSA-N (2-naphthalen-1-ylphenyl)-diphenylphosphane Chemical compound C1=CC=CC=C1P(C=1C(=CC=CC=1)C=1C2=CC=CC=C2C=CC=1)C1=CC=CC=C1 RNXMVQFMHXXZLO-UHFFFAOYSA-N 0.000 description 1
- DXWOZAKVOAAOEF-UHFFFAOYSA-N (2-naphthalen-2-ylphenyl)-diphenylphosphane Chemical compound c1ccc(cc1)P(c1ccccc1)c1ccccc1-c1ccc2ccccc2c1 DXWOZAKVOAAOEF-UHFFFAOYSA-N 0.000 description 1
- QVHJQCGUWFKTSE-RXMQYKEDSA-N (2r)-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid Chemical compound OC(=O)[C@@H](C)NC(=O)OC(C)(C)C QVHJQCGUWFKTSE-RXMQYKEDSA-N 0.000 description 1
- SZXBQTSZISFIAO-SSDOTTSWSA-N (2r)-3-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoic acid Chemical compound CC(C)[C@H](C(O)=O)NC(=O)OC(C)(C)C SZXBQTSZISFIAO-SSDOTTSWSA-N 0.000 description 1
- ZYJPUMXJBDHSIF-NSHDSACASA-N (2s)-2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-phenylpropanoic acid Chemical compound CC(C)(C)OC(=O)N[C@H](C(O)=O)CC1=CC=CC=C1 ZYJPUMXJBDHSIF-NSHDSACASA-N 0.000 description 1
- LRFZIPCTFBPFLX-SSDOTTSWSA-N (2s)-3,3-dimethyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoic acid Chemical compound CC(C)(C)OC(=O)N[C@H](C(O)=O)C(C)(C)C LRFZIPCTFBPFLX-SSDOTTSWSA-N 0.000 description 1
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- QVLGTXPQVOQRLD-UHFFFAOYSA-N 1-(2-bromoethenyl)-2-methoxybenzene Chemical compound COC1=CC=CC=C1C=CBr QVLGTXPQVOQRLD-UHFFFAOYSA-N 0.000 description 1
- ROVVUKFHORPDSM-UHFFFAOYSA-N 1-[(2-methylpropan-2-yl)oxycarbonylamino]cyclobutane-1-carboxylic acid Chemical compound CC(C)(C)OC(=O)NC1(C(O)=O)CCC1 ROVVUKFHORPDSM-UHFFFAOYSA-N 0.000 description 1
- GGQOMRPVQMGZMZ-UHFFFAOYSA-N 1-amino-2-[(2-methylpropan-2-yl)oxycarbonyl]cyclopropane-1-carboxylic acid Chemical compound CC(C)(C)OC(=O)C1CC1(N)C(O)=O GGQOMRPVQMGZMZ-UHFFFAOYSA-N 0.000 description 1
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- IQSUNBLELDRPEY-UHFFFAOYSA-N 1-ethylcyclopenta-1,3-diene Chemical compound CCC1=CC=CC1 IQSUNBLELDRPEY-UHFFFAOYSA-N 0.000 description 1
- DVWQNBIUTWDZMW-UHFFFAOYSA-N 1-naphthalen-1-ylnaphthalen-2-ol Chemical compound C1=CC=C2C(C3=C4C=CC=CC4=CC=C3O)=CC=CC2=C1 DVWQNBIUTWDZMW-UHFFFAOYSA-N 0.000 description 1
- DCYGAPKNVCQNOE-UHFFFAOYSA-N 2,2,2-triphenylacetic acid Chemical compound C=1C=CC=CC=1C(C=1C=CC=CC=1)(C(=O)O)C1=CC=CC=C1 DCYGAPKNVCQNOE-UHFFFAOYSA-N 0.000 description 1
- FFFIRKXTFQCCKJ-UHFFFAOYSA-N 2,4,6-trimethylbenzoic acid Chemical compound CC1=CC(C)=C(C(O)=O)C(C)=C1 FFFIRKXTFQCCKJ-UHFFFAOYSA-N 0.000 description 1
- AOTQGWFNFTVXNQ-UHFFFAOYSA-N 2-(1-adamantyl)acetic acid Chemical compound C1C(C2)CC3CC2CC1(CC(=O)O)C3 AOTQGWFNFTVXNQ-UHFFFAOYSA-N 0.000 description 1
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- JGFXUYLYPITYGR-UHFFFAOYSA-N 2-(2-diphenylphosphanylphenyl)-n,n-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 JGFXUYLYPITYGR-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了一种双齿膦烯配体的合成方法,属于有机化学技术领域。采用联芳基‑2‑(双取代基)膦1和烯基溴代物2为原料,在钌催化剂、配体和碱存在下,有机溶剂中40‑180℃反应得到双齿膦烯配体2‑(双取代基)膦‑2’‑烯烃3。本发明合成步骤简洁,仅采用一步即可完成,合成过程中不需要引入活性官能团或复杂的反应步骤来构筑C‑C键,合成工艺高效、操作过程简单;原材料廉价易得产物收率高达93%,且对工艺设备的要求低,反应过程更加绿色环保,具有潜在的规模工业化生产应用前景。
Description
技术领域
本发明涉及一种双齿膦烯配体的合成方法,更具体涉及通过过渡金属催化烯基化修饰単膦配体合成双齿膦烯配体的系列化方法,属于有机化学技术领域。
背景技术
双齿膦烯配体作为一种高效双齿配体,在过渡金属催化偶联反应中应用广泛,其对于增加反应产率、催化剂活性、区域选择性和对映选择性有着极为重要的促进作用。近年来,过渡金属催化的偶联反应发展迅速,双齿膦烯配体的开发日益受到人们的重视。
双齿膦烯配体的合成在一些文献中已有报道,主要包括使用高活性的烯基氟硼酸钾试剂以及铑、钯等金属催化,从而引入烯基取代基,其合成方法具有较大的局限性,存在反应步骤繁复、底物范围小、反应条件苛刻、催化剂昂贵、生产成本高、不能够大量合成等弊端。
文献(Org.Lett.2011,13,2164-2167.)中通过三氟甲磺酸酐与联萘酚在-78℃条件下磺酰酯化,经钯催化磷酰化再还原后与烯基氟硼酸钾反应,多步合成了双齿膦烯配体,反应方程式如下:
该合成路线步骤繁琐,催化剂成本较高,合成过程中使用的试剂种类繁多,反应条件苛刻,不利于工业化生产且底物单一。
文献(Org.Lett.2017,19,1842-1845.)需先将三价膦采用过氧化氢处理得膦氧化合物,再以二价钯为催化剂,通过与烯烃的交叉偶联进行烯基化,再用三氯硅烷还原得到系列烯基修饰的双齿膦烯配体,反应方程式如下:
该路线虽然实现了双齿膦烯配体的合成,但是需氧化-碳氢活化-还原多步反应才能的到烯基修饰双齿膦烯配体,存在反应步骤繁琐,氧化剂乙酸银价格高昂,不利于大规模生产工业化等问题。
文献(Nat.Commun.2019,10,3539.)以一价铑为催化剂,通过単膦配体和炔烃氢化芳基化直接得到双齿膦烯配体,反应方程式如下:
该方法需使用昂贵的炔烃作为偶联试剂,且只能得到1,1-取代末端烯基修饰的双齿膦烯配体,同时使用的炔烃和铑催化剂成本高昂,不适合大规模工业化生产。
综上,现有技术中双齿膦烯配体的合成方法存在步骤繁琐、操作复杂、反应条件苛刻,且合成过程中使用的试剂种类繁多、成本高、底物范围有限。
发明内容
有鉴于此,本申请提供了一种双齿膦烯配体及其简单、高效、经济、系列化合成方法,使用商业化的原料与廉价的催化剂解决了现有技术中双齿膦烯配体的步骤繁复、原料成本高、底物范围小、产物结构单一、操作过程复杂等问题,并开发出一系列具有空间效应和电子特性的双齿膦烯配体。
为了实现本发明的上述第一个目的,本发明提供的一种双齿膦烯配体,所述双齿膦烯配体3具有如下结构式:
其中:X=C,N,O,S;n=0,1;R1选自氢、双(C1-C4烷基)胺基、-CH=CH-CH=CH-;R2选自氢、C1-C4烷基;R3选自C1-C6烷基、C3-C8环烷基、苯基、取代苯基,取代苯基中取代基为C1-C4烷基、C-C4烷氧基、卤素;R4选自苯基、取代苯基、呋喃、噻吩、烯基、醚基,取代苯基中取代基为C1-C4烷基、C-C4烷氧基、卤素、酯基、OTf。需要说明的是,本发明中X均为芳环中任意位置,并非上述式所标定的具体位置。
本发明的第二个目的在于提供上述所述的双齿膦烯配体的系列化合成方法,所述方法的合成路线如下式所示:
双齿膦烯配体3的合成方法,包括以下步骤:联芳基-2-(双取代基)膦1和烯基溴代物2为原料,在钌催化剂、配体和碱存在下,有机溶剂中40-180℃反应得到双齿膦烯配体2-(双取代基)膦-2’-烯烃3。
进一步地,在上述技术方案中,所述有机溶剂为醚类溶剂、烷烃类溶剂、醇类溶剂、芳烃类溶剂、腈类溶剂、酮类溶剂中的任意一种或者多种的混合;优选地,在上述技术方案中,所述醚类溶剂包括乙醚、苯甲醚、甲基四氢呋喃、四氢呋喃、甲基乙基醚、甲基叔丁基醚、乙二醇二甲醚和二氧六环等醚类溶剂中的任意一种或者多种的混合;所述烷烃类溶剂包括戊烷、己烷、庚烷、异辛烷、辛烷、环己烷、环庚烷、甲基环己烷、环辛烷等烷烃类溶剂中的任意一种或者多种的混合;所述醇类溶剂包括甲醇、乙醇、丙醇、异丙醇、丁醇、戊醇等醇类溶剂中的任意一种或者多种的混合;所述芳烃类溶剂选自苯、甲苯、二甲苯、三甲苯、乙基苯、卤代苯、三氟甲苯等苯类溶剂中的任意一种或者多种的混合;所述腈类溶剂包括乙腈、异丁腈、异戊腈、苯甲腈、三甲基乙腈等腈类溶剂中的任意一种或者多种的混合;所述酮类溶剂包括丙酮、环己酮、丁酮、环戊酮、戊酮等酮类溶剂中的任意一种或者多种的混合。
进一步,上述技术方案,所述联芳基-2-(双取代基)膦1和烯基溴代物2摩尔比为1:1-10。在实验中经过验证和确认,烯基溴代物2中E和Z构型比例对产物比例无影响,均得到相同的产物。
进一步地,上述技术方案,所述钌催化剂包括所有甲基异丙基苯、苯、三苯基膦、环辛二烯、环戊二烯、五甲基环戊二烯、十二羰基、乙基环戊二烯、乙酰丙酮等配体配位及氯离子、溴离子、碘离子、乙酸根等阴离子结合的钌金属盐中的任意一种或者多种混合。
进一步地,在上述技术方案中,所述钌催化剂与联芳基-2-(双取代基)膦1摩尔比为0.001-1:1。
进一步地,在上述技术方案中,所述配体包括N-Boc-甘氨酸、N-Boc-2-氨基异丁酸、Boc-D-缬氨酸、N-Ac-苯丙氨酸、N-Ac-β-丙氨酸、N-Boc-L-苯丙氨酸、N-Boc-D-丙氨酸、N-Boc-L-异亮氨酸、N-Boc-L-叔亮氨酸、N-Ac-异亮氨酸、Boc-1-氨基环丙基甲酸、(2S,3S)-2-(Boc-氨基)-3-甲基戊酸、N-Ac-D-缬氨酸、N-Boc-1-氨基环丁烷羧酸、缬氨酸、苯丙氨酸、丙氨酸、亮氨酸、异亮氨酸、甘氨酸、叔亮氨酸等单保护或无保护氨基酸以及2-甲基丁酸、三甲基乙酸、三苯基乙酸、1-金刚烷甲酸、1-金刚烷乙酸、环己基乙酸、2,2-二苯基丙酸、2,4,6-三甲基苯甲酸等烷基/芳基羧酸中的任意一种或多种混合。
进一步地,在上述技术方案中,所述配体与联芳基-2-(双取代基)膦1摩尔比为0.005-1:1。
进一步地,在上述技术方案中,所述碱包括对甲苯磺酸钠、苯磺酸钠、碳酸钠、碳酸钾、磷酸钠、醋酸钠、醋酸锂、醋酸钾、醋酸铯、碳酸锂、磷酸钾等无机碱中的任意一种或多种混合。
进一步地,在上述技术方案中,所述碱与联芳基-2-(双取代基)膦1摩尔比为1-15:1。
本发明有益效果:
1、合成步骤简洁,仅采用一步即可完成,合成过程中不需要引入活性官能团或复杂的反应步骤来构筑C-C键,合成工艺高效、操作过程简单;
2、本发明反应过程中所需要的原材料廉价易得,产物收率高达93%,且对工艺设备的要求低,降低了投入成本;
3、发明反应过程中产生的三废少,环境危害大大减少,比较适合放大规模制备。
具体实施方式
下面结合具体实施案例对本发明作进一步详细说明。本实施案例在本发明技术方案的前提下进行实施,给出了详细的实施方式和具体的操作过程,但本发明的保护范围不限于下述的实施案例。
实施例1
双齿膦烯配体3a(2'-(4-甲氧基苯乙烯基)-[1,1'-联苯]-2-基)二苯基膦,合成路线如下:
在反应釜中加入101.4mg(0.3mmol)2-二苯基膦-联苯1a、190.8mg 1-(2-溴乙烯基)-4-甲氧基苯2a(E:Z=5.7:1)(0.9mmol)、3.8mg对伞花烃二氯化钌二聚体、7.8mg N-Ac-甘氨酸、49.2mg醋酸钠和1mL甲基叔丁基醚,搅拌混合均匀后向反应体系中通氩气,控制反应在氩气氛围中、温度在120℃条件下反应16h后冷却至室温,硅藻土抽滤、减压蒸馏后柱层色谱分离得E式产物3aa(2'-(4-甲氧基苯乙烯基)-[1,1'-联苯]-2-基)二苯基膦83.2mg(收率为59%)、Z式产物3ab(2'-(4-甲氧基苯乙烯基)-[1,1'-联苯]-2-基)二苯基膦40.9mg(收率为29%),总产物3a质量124.1mg,总收率88%(E:Z=2.0:1)。
当底物为2a(E:Z=1:6.5),所得产物3a收率82%(E:Z=2.0:1);
当底物为2a(E:Z=1:1),所得产物3a收率86%(E:Z=2.0:1)
从上述实验可知,底物烯基溴2a中顺式和反式任意比例都适用该方法且结果一致。
E式产物(2'-(4-甲氧基苯乙烯基)-[1,1'-联苯]-2-基)二苯基膦:1H NMR(400MHz,CDCl3)δ7.66(d,J=8.0Hz,1H),7.41-7.37(m,1H),7.33-7.27(m,5H),7.25-7.08(m,13H),7.00(d,J=7.6Hz,1H),6.86(d,J=16.4Hz,1H),6.80(d,J=8.8Hz,2H),6.57(d,J=16.4Hz,1H),3.79(s,3H).化学位移δ7.66,二重峰,耦合常数为8.0,归属为苯环上的一个氢;化学位移δ7.41-7.37,多重峰,归属为苯环上的一个氢;化学位移δ7.33-7.27,多重峰,归属为苯环上的五个氢;化学位移δ7.25-7.08,多重峰,归属为苯环上的十三个氢;化学位移δ7.00,二重峰,耦合常数为7.6,归属为苯环上的一个氢;化学位移δ6.86,二重峰,耦合常数为16.4,归属为E式烯烃上的一个氢;化学位移δ6.80,二重峰,耦合常数为8.8,归属为苯环上的一个氢;化学位移δ6.57,二重峰,耦合常数为16.4,归属为E式烯烃上的一个氢;化学位移δ3.79,单峰,归属为甲基上的三个氢;13C NMR(101MHz,CDCl3)δ159.2,147.0(d,J=30.7Hz),140.5(d,J=6.6Hz),137.5(d,J=12.3Hz),137.5(d,J=12.5Hz),137.3(d,J=12.5Hz),136.1(d,J=1.3Hz),134.0(d,J=19.3Hz),134.0,133.8(d,J=19.0Hz),130.1(d,J=2.2Hz),130.7(d,J=5.5Hz),130.7,128.8,128.4(d,J=4.4Hz),128.4(d,J=6.3Hz),128.3(d,J=6.5Hz),127.9,127.8,126.3,125.4,124.6,114.1,55.4.31P NMR(162MHz,CDCl3)δ-13.9.HRMS(ESI+)exact mass calculated for[M+H]+(C33H28OP):471.1872,found:471.1877.
Z式产物(2'-(4-甲氧基苯乙烯基)-[1,1'-联苯]-2-基)二苯基膦:1H NMR(400MHz,CDCl3)δ7.34-7.27(m,5H),7.25-7.08(m,13H),7.04(t,J=7.6Hz,1H),6.95(d,J=7.2Hz,1H),6.74-6.71(m,2H),6.31(d,J=12.0Hz,1H),6.09(d,J=12.0Hz,1H),3.74(s,3H).化学位移δ7.34-7.27,多重峰,归属为苯环上的五个氢;化学位移δ7.25-7.08,多重峰,归属为苯环上的十三个氢;化学位移δ7.04,三重峰,耦合常数为7.6,归属为苯环上的一个氢;化学位移δ6.95,二重峰,耦合常数为7.2,归属为苯环上的一个氢;化学位移δ6.74-6.71,多重峰,归属为苯环上的二个氢;化学位移δ6.31,二重峰,耦合常数为12.0,归属为Z式烯烃上的一个氢;化学位移δ6.57,二重峰,耦合常数为12.0,归属为Z式烯烃上的一个氢;化学位移δ3.74,单峰,归属为甲基上的三个氢;13C NMR(101MHz,CDCl3)δ158.7,147.4(d,J=31.2Hz),141.1(d,J=6.7Hz),137.7(d,J=12.9Hz),137.6(d,J=12.5Hz),137.0(d,J=12.5Hz),136.5,134.0,133.9(d,J=20.3Hz),133.8(d,J=19.9Hz),130.9(d,J=3.8Hz),130.4(d,J=1.1Hz),130.3(d,J=5.4Hz),129.8,129.6,129.2,128.7,128.5,128.4,128.4(d,J=3.1Hz),128.3,127.6,127.3,126.3,113.6,55.3.31P NMR(162MHz,CDCl3)δ-14.2.HRMS(ESI+)exact mass calculated for[M+H]+(C33H28OP):471.1872,found:471.1877.
综合上述核磁、质谱测试结果,可以确定,本实施例目标化合物为(2'-(4-甲氧基苯乙烯基)-[1,1'-联苯]-2-基)二苯基膦3a。
实施例2
双齿膦烯配体3b(E)-4-(2-(二苯基膦基)苯基)-3-(4-甲氧基苯乙烯基)吡啶,合成路线如下:
在反应釜中加入101.7mg(0.3mmol)4-(2-(二苯基膦基)苯基)吡啶1b、190.8mg 1-(2-溴乙烯基)-4-甲氧基苯2a(E:Z=5.7:1)(0.9mmol)、3.8mg对伞花烃二氯化钌二聚体、7.8mg N-Ac-甘氨酸、49.2mg醋酸钠和1mL甲基叔丁基醚,搅拌混合均匀后向反应体系中通氩气,控制反应在氩气氛围中、温度在160℃条件下反应16h后冷却至室温,硅藻土抽滤、减压蒸馏后柱层色谱分离得82.0mg目标产物3b,收率为58%(仅E式产物)。1H NMR(400MHz,CDCl3)δ8.85(s,1H),8.31(d,J=5.2Hz,1H),7.42(td,J=7.2Hz,J=1.2Hz,1H),7.36(td,J=7.6Hz,J=1.6Hz,1H),7.33-7.27(m,3H),7.20-7.11(m,11H),6.93-6.88(m,2H),6.83(d,J=8.4Hz,2H),6.48(d,J=16.4Hz,1H),3.81(s,3H).13C NMR(101MHz,CDCl3)δ159.6,147.3(d,J=6.3Hz),147.0,144.1(d,J=30.1Hz),136.9(d,J=14.7Hz),136.7(d,J=11.6Hz),136.4(d,J=11.6Hz),134.1(d,J=20.1Hz),133.9(d,J=19.4Hz),132.1(d,J=1.4Hz),130.7,130.0,129.9,129.0,128.8(d,J=1.5Hz),128.6(d,J=7.1Hz),128.5,128.1,125.3(d,J=3.6Hz),122.1(d,J=1.1Hz),114.1,55.5.31P NMR(162MHz,CDCl3)δ-13.5.HRMS(ESI+)exact mass calculated for[M+H]+(C32H27NOP):472.1825,found:472.1823.
实施例3
双齿膦烯配体3c(2'-(4-甲氧基苯乙烯基)-4-甲基-[1,1'-联苯]-2-基)二苯基膦,合成路线如下:
在反应釜中加入110.9mg(0.3mmol)(4-甲基-[1,1'-联苯]-2-基)二苯基膦1c、190.8mg 1-(2-溴乙烯基)-4-甲氧基苯2a(E:Z=5.7:1)(0.9mmol)、3.8mg对伞花烃二氯化钌二聚体、7.8mg N-Ac-甘氨酸、49.2mg醋酸钠和1mL甲基叔丁基醚,搅拌混合均匀后向反应体系中通氩气,控制反应在氩气氛围中、温度在120℃条件下反应16h后冷却至室温,硅藻土抽滤、减压蒸馏后柱层色谱分离得127.8mg目标产物3c,收率为88%(E:Z=2.5:1)。1H NMR(400MHz,CDCl3)δ7.65(d,J=8.0Hz,2.5H),7.30-7.27(m,12.6H),7.24-6.91(m,51.9H),6.87(d,J=16.4Hz,2.5H),6.81(d,J=8.4Hz,5.0H),6.72(d,J=8.4Hz,2.1H),6.60(d,J=16.4Hz,2.5H),6.31(d,J=12.0Hz,1.0H),6.09(d,J=12.4Hz,1.0H),3.78(s,7.5H),3.75(s,3.0H),2.29(s,7.4H),2.25(s,3.0H).13C NMR(101MHz,CDCl3)δ159.2,158.7,144.6(d,J=31.5Hz),144.2(d,J=31.0Hz),141.1(d,J=6.8Hz),140.5(d,J=6.6Hz),137.8(d,J=10.4Hz),137.7(d,J=9.7Hz),137.7(d,J=12.3Hz),137.4(d,J=11.4Hz),137.2,137.1,136.9(d,J=12.3Hz),136.7(d,J=0.9Hz),136.5(d,J=12.7Hz),136.2(d,J=1.2Hz),134.4,134.3,134.0(d,J=20.5Hz),134.0(d,J=6.1Hz),133.9,133.8(d,J=21.2Hz),133.8(d,J=6.2Hz),131.2(d,J=3.4Hz),131.1(d,J=3.8Hz),130.7,130.6(d,J=5.7Hz),130.4(d,J=1.6Hz),130.2(d,J=5.8Hz),129.8,129.7,129.6,129.4,129.1,128.6,128.5(d,J=1.9Hz),128.4,128.3(d,J=6.5Hz),128.3(d,J=7.0Hz),127.9,127.8,127.1,126.3,125.5(d,J=1.0Hz),124.6,114.0,113.6,55.4,55.3,21.5,21.4.31PNMR(162MHz,CDCl3)δ-13.7,-14.1.HRMS(ESI+)exact mass calculated for[M+H]+(C34H30OP):485.2029,found:485.2024.
实施例4
双齿膦烯配体3d(E)-(2'-(4-甲氧基苯乙烯基)-[1,1'-联苯]-2-基)二苯基膦,合成路线如下:
在反应釜中加入101.4mg(0.3mmol)2-二苯基膦-联苯1a,154.8mg 2-(2-溴乙烯基)呋喃2b(E:Z=7.2:1)(0.9mmol)、3.8mg对伞花烃二氯化钌二聚体、7.8mg N-Ac-甘氨酸、49.2mg醋酸钠和1mL甲基叔丁基醚,搅拌混合均匀后向反应体系中通氩气,控制反应在氩气氛围中、温度在120℃条件下反应16h后冷却至室温,硅藻土抽滤、减压蒸馏后柱层色谱分离得110.9mg目标产物,收率为86%(仅E式产物)。1H NMR(400MHz,CDCl3)δ7.58(d,J=8.0Hz,1H),7.35(d,J=7.6Hz,1H),7.28-7.09(m,15H),7.06(d,J=7.2Hz,1H),7.00(d,J=7.2Hz,1H),6.69(d,J=1.6Hz,2H),6.29(t,J=1.6Hz,1.0H),6.15(d,J=1.2Hz,1.0H).13C NMR(101MHz,CDCl3)δ153.6,146.8(d,J=31.0Hz),142.0,140.7(d,J=6.6Hz),137.4(d,J=12.7Hz),137.4(d,J=12.4Hz),137.2(d,J=12.2Hz),135.4,134.0,133.8(d,J=20.0Hz),131.0(d,J=3.2Hz),130.6(d,J=5.3Hz),128.8,128.4(d,J=6.7Hz),128.3,128.2(d,J=6.8Hz),127.9,127.8,126.6,125.7,124.4,117.1,111.5,108.5.31P NMR(162MHz,CDCl3)δ-13.7.HRMS(ESI+)exact mass calculated for[M+H]+(C30H24OP):431.1559,found:431.1550.
仅改变反应原料1,与固定原料2a反应,采用实施例1-3类似的合成方法,制得系列烯基化修饰的双齿膦烯配体,具体见实施例5-10。
实施例5
双齿膦烯配体3e(E)-2'-(二苯基膦基)-6-(4-甲氧基苯乙烯基)-N,N-二甲基-[1,1'-联苯]-2-胺(如下结构式所示)的合成方法,以2'-(二苯基膦基)-N,N-二甲基-[1,1'-联苯]-2-胺为原料,参照实施例2的方法,得到目标产物,目标产物收率为58%(仅E式产物)。
实施例6
双齿膦烯配体3f(E)-(2-(2-(4-(4-甲氧基苯乙烯基)萘-1-基)苯基)二苯基膦(如下结构式所示)的合成方法,以(2-(萘-1-基)苯基)二苯基膦为原料,参照实施例1的方法,得到目标产物,收率为47%(仅E式产物)。
实施例7
双齿膦烯配体3g(2-(3-(4-甲氧基苯乙烯基)萘-2-基)苯基)二苯基膦(如下结构式所示)的合成方法,以(2-(萘-2-基)苯基)二苯基膦为原料,参照实施例1的方法,得到目标产物,收率为56%(E:Z=7.5:1)。
实施例8
双齿膦烯配体3h(E)-(2-(4-(4-甲氧基苯乙烯基)呋喃-3-基)苯基)二苯基膦(如下结构式所示)的合成方法,以(2-(呋喃-3-基)苯基)二苯基膦为原料,参照实施例1的方法,得到目标产物,收率为50%(仅E式产物)。
实施例9
双齿膦烯配体3i(2-(4-(4-甲氧基苯乙烯基)噻吩-3-基)苯基)二苯基膦(如下结构式所示)的合成方法,以二苯基(2-(噻吩-3-基)苯基)膦为原料,参照实施例1的方法,得到目标产物,收率为53%(E:Z=4.5:1)。
实施例10
双齿膦烯配体3j二环己基(2'-(4-甲氧基苯乙烯基)-[1,1'-联苯]-2-基)膦(如下结构式所示)的合成方法,以[1,1'-联苯]-2-基二环己基膦为原料,参照实施例1的方法,得到目标产物,收率为31%(E:Z=1.5:1)。
固定1a为原料、仅改变烯基溴2的结构参与反应,采用实施例4类似的合成方法,制得系列烯基化修饰的双齿膦烯配体,具体见实施例11-16所示。
实施例11
双齿膦烯配体3k(2'-(2-甲氧基苯乙烯基)-[1,1'-联苯]-2-基)二苯基膦(如下结构式所示)的合成方法,以1-(2-溴乙烯基)-2-甲氧基苯(E:Z=6.3:1)为原料,参照实施例4的方法,得到目标产物,收率为48%(E:Z=4.1:1)。
实施例12
双齿膦烯配体3l 4-(2-(2'-(二苯基膦基)-[1,1'-联苯]-2-基)乙烯基)苯甲酸甲酯(如下结构式所示)的合成方法,以4-(2-溴乙烯基)苯甲酸甲酯(E:Z=5.9:1)为原料,参照实施例4的方法,得到目标产物,收率为74%(E:Z=4.2:1)。
实施例13
双齿膦烯配体3m 4-(2-(2'-(二苯基膦基)-[1,1'-联苯]-2-基)乙烯基)苯基三氟甲磺酸酯(如下结构式所示)的合成方法,以4-(2-溴乙烯基)苯基三氟甲磺酸酯(E:Z=4.6:1)为原料,参照实施例4的方法,得到目标产物,收率为81%(E:Z=1.7:1)。
实施例14
双齿膦烯配体3n二苯基(2'-(2-(噻吩-2-基)乙烯基)-[1,1'-联苯基]-2-基)膦(如下结构式所示)的合成方法,以2-(2-溴乙烯基)噻吩(E:Z=6.8:1)为原料,参照实施例4的方法,得到目标产物,收率为75%(E:Z=7.7:1)。
实施例15
双齿膦烯配体3o(2'-(2-(4-甲氧基苯氧基)乙烯基)-[1,1'-联苯]-2-基)二苯基膦(如下结构式所示)的合成方法,以1-((2-溴乙烯基)氧基)-4-甲氧基苯(E:Z=7.5:1)为原料,参照实施例4的方法,得到目标产物,收率为75%(E:Z=4.5:1)。
实施例16
双齿膦烯配体3p二苯基(2'-(((3E)-4-苯基丁-1,3-二烯-1-基)-[1,1'-联苯基]-2-基)膦(如下结构式所示)的合成方法,以((1E)-4-溴丁-1,3-二烯-1-基)苯(E:Z=8.8:1)为原料,参照实施例4的方法,得到目标产物,收率为76%(E:Z=2.7:1)。
从以上实施例以及测定的数据可以看出,采用本申请的方式合成双齿膦烯配体的方法操作过程简单,工艺高效,底物范围广,所需要的原材料廉价易得。
以上仅是本发明的优选实施方式,应当指出的是,上述优选实施方式不应视为对本发明的限制,本发明的保护范围应当以权利要求所限定的范围为准。对于本技术领域的普通技术人员来说,在不脱离本发明的精神和范围内,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (6)
1.一种双齿膦烯配体3的合成方法,其特征在于,包括以下步骤:联芳基-2-(双取代基)膦1和烯基溴代物2为原料,在钌催化剂、配体和碱存在下,有机溶剂中40-180℃反应得到双齿膦烯配体2-(双取代基)膦-2’-烯烃3;反应方程式为:
其中:X=C,N;n=0,1;R1选自氢、双(C1-C4烷基)胺基、-CH=CH-CH=CH-;R2选自氢、C1-C4烷基;R3选自C1-C6烷基、C3-C8环烷基、苯基、取代苯基,取代苯基中取代基为C1-C4烷基、C1-C4烷氧基、卤素;R4选自苯基、取代苯基、呋喃基、噻吩基、烯基,取代苯基中取代基为C1-C4烷基、C1-C4烷氧基、卤素、OTf;所述钌催化剂为[RuCl2(p-cymene)]2,配体为N-Ac-L-Gly-OH,碱为醋酸钠。
2.根据权利要求1所述双齿膦烯配体3的合成方法,其特征在于:所述有机溶剂为醚类溶剂、烷烃类溶剂、醇类溶剂、芳烃类溶剂、腈类溶剂、酮类溶剂中的任意一种或者多种的混合。
3.根据权利要求1所述双齿膦烯配体3的合成方法,其特征在于:所述联芳基-2-(双取代基)膦1和烯基溴代物2摩尔比为1:1-10。
4.根据权利要求1所述双齿膦烯配体3的合成方法,其特征在于:所述钌催化剂与联芳基-2-(双取代基)膦1摩尔比为0.001-1:1。
5.根据权利要求1所述双齿膦烯配体3的合成方法,其特征在于:所述配体与联芳基-2-(双取代基)膦1摩尔比为0.005-1:1。
6.根据权利要求1所述双齿膦烯配体3的合成方法,其特征在于:所述碱与联芳基-2-(双取代基)膦1摩尔比为1-15:1。
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