CN113105496B - 一种镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法 - Google Patents
一种镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法 Download PDFInfo
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- CN113105496B CN113105496B CN202110310688.3A CN202110310688A CN113105496B CN 113105496 B CN113105496 B CN 113105496B CN 202110310688 A CN202110310688 A CN 202110310688A CN 113105496 B CN113105496 B CN 113105496B
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- benzofuran
- substituted phenyl
- nickel
- phenyl
- alkyl
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- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000002194 synthesizing effect Effects 0.000 title claims abstract description 9
- 238000007142 ring opening reaction Methods 0.000 title claims description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 65
- -1 benzofuran compound Chemical class 0.000 claims abstract description 54
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 23
- 239000003446 ligand Substances 0.000 claims abstract description 22
- 239000010703 silicon Substances 0.000 claims abstract description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 14
- 239000003960 organic solvent Substances 0.000 claims abstract description 12
- 125000006239 protecting group Chemical group 0.000 claims abstract description 11
- 239000000654 additive Substances 0.000 claims abstract description 9
- 230000000996 additive effect Effects 0.000 claims abstract description 9
- 239000012298 atmosphere Substances 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 239000012429 reaction media Substances 0.000 claims abstract description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 64
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 63
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 42
- 229910052739 hydrogen Inorganic materials 0.000 claims description 39
- 239000001257 hydrogen Substances 0.000 claims description 38
- 238000004440 column chromatography Methods 0.000 claims description 32
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 30
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 29
- 239000012074 organic phase Substances 0.000 claims description 26
- 125000000217 alkyl group Chemical group 0.000 claims description 23
- 229910052757 nitrogen Inorganic materials 0.000 claims description 20
- 239000003208 petroleum Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 18
- 239000002904 solvent Substances 0.000 claims description 18
- 125000003545 alkoxy group Chemical group 0.000 claims description 17
- JRTIUDXYIUKIIE-KZUMESAESA-N (1z,5z)-cycloocta-1,5-diene;nickel Chemical group [Ni].C\1C\C=C/CC\C=C/1.C\1C\C=C/CC\C=C/1 JRTIUDXYIUKIIE-KZUMESAESA-N 0.000 claims description 16
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical group [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 16
- 239000003480 eluent Substances 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 16
- FPGGTKZVZWFYPV-UHFFFAOYSA-M tetrabutylammonium fluoride Chemical compound [F-].CCCC[N+](CCCC)(CCCC)CCCC FPGGTKZVZWFYPV-UHFFFAOYSA-M 0.000 claims description 15
- WLPUWLXVBWGYMZ-UHFFFAOYSA-N tricyclohexylphosphine Chemical compound C1CCCCC1P(C1CCCCC1)C1CCCCC1 WLPUWLXVBWGYMZ-UHFFFAOYSA-N 0.000 claims description 14
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 8
- LZWQNOHZMQIFBX-UHFFFAOYSA-N lithium;2-methylpropan-2-olate Chemical compound [Li+].CC(C)(C)[O-] LZWQNOHZMQIFBX-UHFFFAOYSA-N 0.000 claims description 8
- 125000002541 furyl group Chemical group 0.000 claims description 7
- 239000012046 mixed solvent Substances 0.000 claims description 7
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- 125000002947 alkylene group Chemical group 0.000 claims description 5
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims description 4
- 125000003342 alkenyl group Chemical group 0.000 claims description 4
- 125000004429 atom Chemical group 0.000 claims description 4
- 239000002274 desiccant Substances 0.000 claims description 4
- 229910052990 silicon hydride Inorganic materials 0.000 claims description 4
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 claims description 4
- JCYWCSGERIELPG-UHFFFAOYSA-N imes Chemical compound CC1=CC(C)=CC(C)=C1N1C=CN(C=2C(=CC(C)=CC=2C)C)[C]1 JCYWCSGERIELPG-UHFFFAOYSA-N 0.000 claims description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 3
- 125000005504 styryl group Chemical group 0.000 claims description 3
- 125000005017 substituted alkenyl group Chemical group 0.000 claims description 3
- HTJWUNNIRKDDIV-UHFFFAOYSA-N bis(1-adamantyl)-butylphosphane Chemical compound C1C(C2)CC(C3)CC2CC13P(CCCC)C1(C2)CC(C3)CC2CC3C1 HTJWUNNIRKDDIV-UHFFFAOYSA-N 0.000 claims description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims description 2
- 238000003810 ethyl acetate extraction Methods 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 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
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 claims description 2
- 150000001907 coumarones Chemical class 0.000 claims 7
- 125000004432 carbon atom Chemical group C* 0.000 claims 5
- 125000004442 acylamino group Chemical group 0.000 claims 1
- 150000001408 amides Chemical class 0.000 claims 1
- 238000004821 distillation Methods 0.000 claims 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims 1
- 239000003054 catalyst Substances 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 5
- 125000000524 functional group Chemical group 0.000 abstract description 4
- 229910052759 nickel Inorganic materials 0.000 abstract description 4
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Natural products P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 abstract description 3
- 229910000073 phosphorus hydride Inorganic materials 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 66
- 238000001228 spectrum Methods 0.000 description 56
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 29
- 229910052799 carbon Inorganic materials 0.000 description 29
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 28
- 238000003756 stirring Methods 0.000 description 17
- AQRLNPVMDITEJU-UHFFFAOYSA-N triethylsilane Chemical compound CC[SiH](CC)CC AQRLNPVMDITEJU-UHFFFAOYSA-N 0.000 description 16
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 14
- 238000005160 1H NMR spectroscopy Methods 0.000 description 14
- 238000000746 purification Methods 0.000 description 14
- 238000002390 rotary evaporation Methods 0.000 description 14
- 238000005406 washing Methods 0.000 description 14
- 238000012512 characterization method Methods 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 13
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 8
- 150000002989 phenols Chemical class 0.000 description 8
- 239000012295 chemical reaction liquid Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 238000006459 hydrosilylation reaction Methods 0.000 description 6
- 125000004172 4-methoxyphenyl group Chemical group [H]C1=C([H])C(OC([H])([H])[H])=C([H])C([H])=C1* 0.000 description 5
- 125000004863 4-trifluoromethoxyphenyl group Chemical group [H]C1=C([H])C(OC(F)(F)F)=C([H])C([H])=C1* 0.000 description 5
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 5
- 125000003261 o-tolyl group Chemical group [H]C1=C([H])C(*)=C(C([H])=C1[H])C([H])([H])[H] 0.000 description 5
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 5
- 229940079593 drug Drugs 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- UPJKDKOHHMKJAY-UHFFFAOYSA-M 1,3-dicyclohexylimidazol-1-ium;chloride Chemical compound [Cl-].C1CCCCC1N1C=[N+](C2CCCCC2)C=C1 UPJKDKOHHMKJAY-UHFFFAOYSA-M 0.000 description 3
- JJXPTUWJVQUHKN-UHFFFAOYSA-N 5-methoxy-1-benzofuran Chemical compound COC1=CC=C2OC=CC2=C1 JJXPTUWJVQUHKN-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 3
- IZGYUJRBTLSOFP-BONVTDFDSA-N (2'S,6S)-2',3,5-trimethylspiro[1-benzofuran-6,1'-cyclopentane]-7-one Chemical compound C[C@H]1CCC[C@@]11C(C)=Cc2c(C)coc2C1=O IZGYUJRBTLSOFP-BONVTDFDSA-N 0.000 description 2
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 2
- OTOSIXGMLYKKOW-UHFFFAOYSA-M 1,3-bis(2,4,6-trimethylphenyl)imidazol-1-ium;chloride Chemical compound [Cl-].CC1=CC(C)=CC(C)=C1N1C=[N+](C=2C(=CC(C)=CC=2C)C)C=C1 OTOSIXGMLYKKOW-UHFFFAOYSA-M 0.000 description 2
- YJCPVMYUISTDKG-UHFFFAOYSA-N 1-phenylethenylboronic acid Chemical compound OB(O)C(=C)C1=CC=CC=C1 YJCPVMYUISTDKG-UHFFFAOYSA-N 0.000 description 2
- GNTXQMPQHDATTO-UHFFFAOYSA-N 2-(2-methylphenyl)-1-benzofuran Chemical compound CC1=CC=CC=C1C1=CC2=CC=CC=C2O1 GNTXQMPQHDATTO-UHFFFAOYSA-N 0.000 description 2
- UKHHJBHJLJNZRN-UHFFFAOYSA-N 2-(4-methoxyphenyl)-1-benzofuran Chemical compound C1=CC(OC)=CC=C1C1=CC2=CC=CC=C2O1 UKHHJBHJLJNZRN-UHFFFAOYSA-N 0.000 description 2
- VXZQHWXQLCYQJH-UHFFFAOYSA-N 2-(4-tert-butylphenyl)-1-benzofuran Chemical compound C1=CC(C(C)(C)C)=CC=C1C1=CC2=CC=CC=C2O1 VXZQHWXQLCYQJH-UHFFFAOYSA-N 0.000 description 2
- DBFDTVVHFWCGJD-UHFFFAOYSA-N 2-(furan-2-yl)-1-benzofuran Chemical compound C1=COC(C=2OC3=CC=CC=C3C=2)=C1 DBFDTVVHFWCGJD-UHFFFAOYSA-N 0.000 description 2
- JESXATFQYMPTNL-UHFFFAOYSA-N 2-ethenylphenol Chemical class OC1=CC=CC=C1C=C JESXATFQYMPTNL-UHFFFAOYSA-N 0.000 description 2
- ZRXHLJNBNWVNIM-UHFFFAOYSA-N 3-methyl-1-benzofuran Chemical compound C1=CC=C2C(C)=COC2=C1 ZRXHLJNBNWVNIM-UHFFFAOYSA-N 0.000 description 2
- GAIZQUHDJDXZOM-UHFFFAOYSA-N 5-(2-phenylethenyl)-1-benzofuran Chemical compound C=1C=C2OC=CC2=CC=1C=CC1=CC=CC=C1 GAIZQUHDJDXZOM-UHFFFAOYSA-N 0.000 description 2
- IQVYQXHAXCWIAE-UHFFFAOYSA-N 5-methoxy-3-phenyl-1-benzofuran Chemical compound C12=CC(OC)=CC=C2OC=C1C1=CC=CC=C1 IQVYQXHAXCWIAE-UHFFFAOYSA-N 0.000 description 2
- DXXGZUXOSCUPAH-UHFFFAOYSA-N 5-phenyl-1-benzofuran Chemical compound C=1C=C2OC=CC2=CC=1C1=CC=CC=C1 DXXGZUXOSCUPAH-UHFFFAOYSA-N 0.000 description 2
- ASYKSLFXWMWVIU-UHFFFAOYSA-N 6-methoxy-1-benzofuran Chemical compound COC1=CC=C2C=COC2=C1 ASYKSLFXWMWVIU-UHFFFAOYSA-N 0.000 description 2
- CZOYEVWOIRECMG-UHFFFAOYSA-N 6-phenyl-1-benzofuran Chemical compound C1=C2OC=CC2=CC=C1C1=CC=CC=C1 CZOYEVWOIRECMG-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000005917 acylation reaction Methods 0.000 description 2
- 150000001345 alkine derivatives Chemical class 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- JRXXLCKWQFKACW-UHFFFAOYSA-N biphenylacetylene Chemical group C1=CC=CC=C1C#CC1=CC=CC=C1 JRXXLCKWQFKACW-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000021523 carboxylation Effects 0.000 description 2
- 238000006473 carboxylation reaction Methods 0.000 description 2
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- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- SMQUZDBALVYZAC-UHFFFAOYSA-N salicylaldehyde Chemical class OC1=CC=CC=C1C=O SMQUZDBALVYZAC-UHFFFAOYSA-N 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- QXTIBZLKQPJVII-UHFFFAOYSA-N triethylsilicon Chemical compound CC[Si](CC)CC QXTIBZLKQPJVII-UHFFFAOYSA-N 0.000 description 2
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- AVJBQMXODCVJCJ-UHFFFAOYSA-M 1,3-bis[2,6-di(propan-2-yl)phenyl]imidazol-1-ium;chloride Chemical compound [Cl-].CC(C)C1=CC=CC(C(C)C)=C1N1C=[N+](C=2C(=CC=CC=2C(C)C)C(C)C)C=C1 AVJBQMXODCVJCJ-UHFFFAOYSA-M 0.000 description 1
- AVJBQMXODCVJCJ-UHFFFAOYSA-N 1,3-bis[2,6-di(propan-2-yl)phenyl]imidazol-1-ium;hydrochloride Chemical compound Cl.CC(C)C1=CC=CC(C(C)C)=C1N1C=[N+](C=2C(=CC=CC=2C(C)C)C(C)C)C=C1 AVJBQMXODCVJCJ-UHFFFAOYSA-N 0.000 description 1
- NBYNIEZPFNQVQK-UHFFFAOYSA-N 1,3-dicyclohexyl-1,2-dihydroimidazol-1-ium;chloride Chemical compound [Cl-].C1N(C2CCCCC2)C=C[NH+]1C1CCCCC1 NBYNIEZPFNQVQK-UHFFFAOYSA-N 0.000 description 1
- NCJDDKWHXVXKIQ-UHFFFAOYSA-N 1,3-dicyclohexylimidazolidin-1-ium;chloride Chemical compound [Cl-].C1C[NH+](C2CCCCC2)CN1C1CCCCC1 NCJDDKWHXVXKIQ-UHFFFAOYSA-N 0.000 description 1
- VADKRMSMGWJZCF-UHFFFAOYSA-N 2-bromophenol Chemical compound OC1=CC=CC=C1Br VADKRMSMGWJZCF-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 102000015081 Blood Coagulation Factors Human genes 0.000 description 1
- 108010039209 Blood Coagulation Factors Proteins 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000010499 C–H functionalization reaction Methods 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- AFBPFSWMIHJQDM-UHFFFAOYSA-N N-methylaniline Chemical compound CNC1=CC=CC=C1 AFBPFSWMIHJQDM-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical class [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
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- 125000005982 diphenylmethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- VDCSGNNYCFPWFK-UHFFFAOYSA-N diphenylsilane Chemical compound C=1C=CC=CC=1[SiH2]C1=CC=CC=C1 VDCSGNNYCFPWFK-UHFFFAOYSA-N 0.000 description 1
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- 229930014626 natural product Natural products 0.000 description 1
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- AUONHKJOIZSQGR-UHFFFAOYSA-N oxophosphane Chemical compound P=O AUONHKJOIZSQGR-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 125000002097 pentamethylcyclopentadienyl group Chemical group 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
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- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- PARWUHTVGZSQPD-UHFFFAOYSA-N phenylsilane Chemical compound [SiH3]C1=CC=CC=C1 PARWUHTVGZSQPD-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Chemical class 0.000 description 1
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- OXNIZHLAWKMVMX-UHFFFAOYSA-N picric acid Chemical compound OC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O OXNIZHLAWKMVMX-UHFFFAOYSA-N 0.000 description 1
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- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
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- 238000007363 ring formation reaction Methods 0.000 description 1
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Abstract
本发明属于有机合成技术领域,公开了一种镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法。方法:在保护性氛围下,以有机溶剂为反应介质,苯并呋喃化合物与硅氢化合物在镍催化剂、配体或镍催化剂、配体和添加剂的作用下反应,获得含硅保护基的产物即含硅保护基的邻烯基苯酚衍生物;或者脱去含硅保护基,获得邻烯基苯酚衍生物即含酚羟基的邻烯基苯酚衍生物。本发明的方法以镍为催化剂,膦化合物或氮杂卡宾做为配体,具有产率较高、底物适用性广等特点。此外,该反应以苯并呋喃化合物为原料,具有原料廉价易得、操作简便、反应条件温和且官能团位置兼容性良好等优点,具有很强实用性。
Description
技术领域
本发明属于有机合成技术领域,具体涉及一种镍催化的苯并呋喃在硅氢化合物作用下开环合成邻烯基苯酚衍生物的方法。
背景技术
苯酚衍生物是一类含有酚羟基的化合物,是许多天然产物和药物分子的核心结构,如苦味酸、水杨酸、酚酞等。酚类化合物由于其酚羟基的存在,其易被氧化的特性使其可以作为抗氧化剂广泛用于药品、保健品、护肤品。另外,苯酚衍生物作为一种有机化工原料,可以用来合成酚醛树脂、双酚A等化工产品,在制备合成纤维、塑料、合成橡胶、农药、香料、染料等领域发挥着至关重要的作用。
利用酚羟基的给电子特性,使其作为富电子底物可以通过简单的卤代、氧化、烷基化、酰基化、羧基化等反应在羟基所在的苯环的邻位或对位定向引入各种不同的取代基,从而获得结构多样的、官能团丰富的苯酚衍生物。然而在苯酚的邻位引入烯基官能团则不能通过上述的过程简单获得。邻烯基苯酚是一类重要的有机合成子,在合成化学中占有着十分重要的作用。例如,从邻烯基苯酚出发以下几种方式构建生物活性中间体骨架:1)它可以在Pd(OAc)2的催化下插入一氧化碳或者二氧化碳合成香豆素的核心骨架,该类化合物在食品添加剂和抑制凝血因子等方面应用广泛。(Synthesis of coumarins via Pd-catalyzedoxidative cyclocarbonylation of 2-vinylphenols.[J].Org.Lett.,2012,14,5602;Palladium(II)-Catalyzed Direct Carboxylation of Alkenyl C-H Bonds withCO2[J].J.Am.Chem.Soc.,2013,45,10954-10957;2)邻烯基苯酚也可以在[Cp*RhCl2]2(Cp*=pentamethylcyclopentadienyl)的催化下插入二苯基乙炔得到多种药物分子的核心骨架--苯并噁庚因(Straightforward Assembly of Benzoxepinesby Means of a Rhodium(III)-Catalyzed C-H Functionalization of o-Vinylphenols[J].J.Am.Chem.Soc.,2014,136,834-837;3)2-(1-苯乙烯基)苯酚则在[Cp*RhCl2]2(Cp*=pentamethylcyclopentadienyl)的催化下与二苯基乙炔反应可以得到药物分子spirovirgafuran的中间体。(Kujawa S,Best D,Burns D J,et al.SynthesisofSpirocyclic Enones by Rhodium-Catalyzed Dearomatizing Oxidative Annulationof 2-Alkenylphenols with Alkynes and Enynes[J].Chem.Eur.J.,2014,20,8599-8602).
虽然邻烯基苯酚用途广泛,但是目前合成苯环上具有邻位烯基取代的苯酚衍生物的方法比较局限。迄今为止,有三种常见的合成邻烯基取代苯酚的反应模式:(1)利用取代水杨醛和磷叶立德进行witting反应,向苯酚衍生物的酚羟基邻位引入烯基结构。但是,该方法反应过程中需要使用当量的witting试剂,产生化学当量的氧膦副产物,反应的原子经济性不高(Albert S,Horbach R,Deising H B,et a1.Synthesis and antimicrobialactivity of(E)stilbene derivatives[J].Bio.Med.Chem.,2011,19,5155-5166.);(2)利用苯酚和炔烃反应向苯酚邻位引入烯基结构,该方法通过路易斯酸作为催化剂活化苯酚羟基邻位接受亲电试剂的进攻,得到邻烯基苯酚产物,但是该方法合成的邻烯基苯酚官能团区域选择性不佳大多数只能兼容对位取代的苯酚并且炔烃衍生物的价格比较昂贵进一步限制了它的应用(Ortho-Vinylation and Ortho-Alkenylation of Phenols[J].J.Am.Chem.Soc.2002,117,1151-1152.);(3)利用1-苯基乙烯基硼酸与邻溴苯酚发生Suzuki反应得到邻烯基苯酚产物,但是1-苯基乙烯基硼酸的价格昂贵且合成过程复杂需要使用到具有危险性的正丁基锂试剂这就进一步限制了该方法的实际应用(HighlyEnantioselective Hydrogenation of Styrenes Directed by 2’-Hydroxyl Groups.[J].Org.Lett.2011,13,1881-1883).
因此,发展一种由底物廉价易得原料出发,安全、高效、广谱的2-烯基苯酚合成方法显得尤为关键。
发明内容
针对现有技术存在的缺点和不足之处,本发明的目的在于提供一种镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法。本发明的方法使用种类丰富且易得的苯并呋喃及其衍生物为原料,镍作为催化剂,膦化合物或氮杂卡宾作为配体,反应得到苯并呋喃开环后的产物即邻烯基苯酚衍生物。本发明的方法具有价格低廉,操作安全简单,底物适用性广泛,原子经济性高,环境友好等优点。
本发明通过以下技术方案实现:
一种镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法,包括以下步骤:在保护性氛围下,以有机溶剂为反应介质,苯并呋喃化合物与硅氢化合物在镍催化剂、配体或镍催化剂、配体和添加剂的作用下反应,获得含硅保护基的产物即含硅保护基的邻烯基苯酚衍生物;或者脱去含硅保护基,获得邻烯基苯酚衍生物即含酚羟基的邻烯基苯酚衍生物;
所述苯并呋喃化合物的结构为式I;
R1为氢、苯基、取代的苯基、呋喃基;所述取代的苯基优选为烷基取代的苯基、烷氧基取代的苯基、苯基取代的苯基。如:苯基、4-甲氧基苯基、4-三氟甲氧基苯基、4-甲基苯基、3-甲基苯基、2-甲基苯基。
R2为氢、苯基、取代的苯基、烷基;所述取代的苯基优选为烷基取代的苯基、烷氧基取代的苯基、苯基取代的苯基;所述烷基优选为C1~4烷基,如:甲基、乙基等。如:苯基、4-甲氧基苯基、4-三氟甲氧基苯基、4-甲基苯基、3-甲基苯基、2-甲基苯基、甲基、乙基。
R3为氢原子。R3还可以为苯基、4-甲氧基苯基、4-三氟甲氧基苯基、4-甲基苯基、3-甲基苯基、2-甲基苯基、甲氧基、甲基、乙基。
R4为氢、苯基、烷基、烷氧基、烯烃基、取代的烯烃基、酰胺基;所述烷基优选为C1~3烷基,更优选为甲基;所述烷氧基为甲氧基、乙氧基、丙氧基,优选为甲氧基;所述烯烃基为碳数为2~4的烯烃基,如:乙烯基、丙烯基、丁烯基;所述取代的烯烃基是指烯烃基中氢被芳基取代,即芳基取代的烯烃基,如:苯乙烯基;所述酰胺基优选为(R′)2NC(O)-,R′为烷基,如:N,N-二甲基酰胺基。
如:R4为苯基、4-甲氧基苯基、4-三氟甲氧基苯基、4-甲基苯基、3-甲基苯基、2-甲基苯基、甲氧基、甲基、乙基、N,N-二甲基酰胺基、N,N-甲基苯基酰胺基、苯乙烯基。
R5为氢、苯基、烷氧基、烷基(优选为碳数为1~4的烷基)、取代的苯基;所述烷氧基优选为甲氧基、乙氧基;
如:R5为苯基、4-甲氧基苯基、4-三氟甲氧基苯基、4-甲基苯基、3-甲基苯基、2-甲基苯基、甲氧基、甲基、乙基。
R6为H原子。
R7,R8,R9取代基不能为氢原子,R7,R8,R9独自为苯基,烷基(优选碳数为1~4的烷基)或者烷氧基。硅原子上只能连有一个氢原子,如果含有两个或者三个氢原子比如使用苯基硅烷或者二苯基硅烷时,反应无法发生。
如:硅氢化合物为三乙基硅氢、二苯基甲基硅氢、苯基二甲基硅氢、二甲基叔丁基硅氢或三苯基硅氢。
所述含硅保护基的产物的结构为式III:
所述邻烯基苯酚衍生物(不含硅保护基的邻烯基苯酚衍生物)结构为式IV:
所述镍催化剂为双(1,5-环辛二烯)镍,其它镍催化剂均不反应。
式III,式IV中R1~R9如前面式I,式II所定义。
所述配体为正丁基二(1-金刚烷基)膦、三环己基膦、SICy·HCl(1,3-二环己基-4,5-二氢-1H-咪唑氯化物)、ICy·HCl(1,3-二环己基氯化咪唑)、IPr·HCl(1,3-双(2,6-二异丙基苯基)氯化咪唑鎓)、IMes·HCl(1,3-二(2,4,6-三甲基苯基)氯化咪唑)。
SICy·HCl(1,3-二环己基咪唑盐酸盐)ICy·HCl(1,3-二环己基氯化咪唑)IPr·HCl(1,3-双(2,6-二异丙基苯基)咪唑翁盐酸盐)IMes·HCl(1,3-双(2,4,6-三甲基苯基)氯化咪唑)
当苯并呋喃化合物中R1为H原子时,配体优选为三环己基膦。当苯并呋喃R1为苯基、取代的苯基、呋喃基时,配体优选为氮杂卡宾配体ICy·HCl。
所述反应的温度为60~130℃,反应的时间为8~24小时。
所述苯并呋喃化合物与硅氢化合物的摩尔比为1∶(1~5)。所述镍催化剂的加入量与苯并呋喃化合物的摩尔比为(0.05~0.2)∶1。所述配体的加入量与苯并呋喃化化合物的摩尔比为(0.1~0.4)∶1。
当苯并呋喃化合物中R1为苯基、取代的苯基、呋喃基时,反应时需加入添加剂,添加剂优选为叔丁醇钠、叔丁醇钾或叔丁醇锂中一种以上,更优选为叔丁醇锂。添加剂与苯并呋喃化合物的摩尔比为(0.5~2)∶1。
所述有机溶剂为THF、1,4-二氧六环、甲苯、苯、甲基环戊己醚、乙二醇二甲醚中一种以上,优选为1,4-二氧六环。所述保护性氛围为氮气或惰性气体。
反应完后,进行后续处理,或脱去含硅保护基后进行后续处理;所述后续处理是指淬灭反应,乙酸乙酯萃取,收集有机相,去除有机相中溶剂,柱层析分离。所述去除有机相中溶剂是指去除有机相中水,去除有机溶剂。
所述淬灭反应是指向反应体系中加水淬灭;所述去除有机相中水是指采用干燥剂进行干燥,干燥剂为无水硫酸镁,然后过滤;所述去除有机相中有机溶剂是指减压蒸馏去除有机溶剂。
所述柱层析的洗脱液为石油醚或石油醚和乙酸乙酯的混合溶剂,混合溶剂中石油醚和乙酸乙酯的体积比(80~200)∶1。
所述脱去含硅保护基,是指在后续处理前,采用TBAF(四丁基氟化铵)将反应后的体系中含硅保护基的产物中含硅保护基脱除,然后后续处理,得到含酚羟基的邻烯基苯酚衍生物;
具体是指在有机溶剂中,TBAF(四丁基氟化铵)与反应后的体系中含硅保护基的产物反应,含硅保护基的产物中含硅保护基脱除,转化成含酚羟基的邻烯基苯酚衍生物。
TBAF(四丁基氟化铵)的用量为苯并呋喃化合物摩尔量的1~3倍。所述反应的时间为15~60min,反应的温度为室温。
本发明合成邻烯基苯酚衍生物的反应方程式:
本发明的合成方法具有如下优点及有益效果:
(1)本发明的方法以廉价金属镍为催化剂,膦化合物或氮杂卡宾为配体,具有产率高、底物适用性广等特点;而且本发明以苯并呋喃化合物为原料,具有原料廉价易制备、操作简便、原子经济性高的优势。
(2)本发明合成方法底物适应性广、催化剂廉价、条件温和,因而有望实际应用于规模生产。
附图说明
图1和图2分别是实施例1所得目标产物的氢谱图、碳谱图;
图3和图4分别是实施例2所得目标产物的氢谱图、碳谱图;
图5和图6分别是实施例3所得目标产物的氢谱图、碳谱图;
图7和图8分别是实施例4所得目标产物的氢谱图、碳谱图;
图9和图10分别是实施例5所得目标产物的氢谱图、碳谱图;
图11和图12分别是实施例6所得目标产物的氢谱图、碳谱图;
图13和图14分别是实施例7所得目标产物的氢谱图、碳谱图;
图15和图16分别是实施例8所得目标产物的氢谱图、碳谱图;
图17和图18分别是实施例9所得目标产物的氢谱图、碳谱图;
图19和图20分别是实施例10所得目标产物的氢谱图、碳谱图;
图21和图22分别是实施例11所得目标产物的氢谱图、碳谱图;
图23和图24分别是实施例12所得目标产物的氢谱图、碳谱图;
图25和图26分别是实施例13所得目标产物的氢谱图、碳谱图;
图27和图28分别是实施例14所得目标产物的氢谱图、碳谱图。
具体实施方式
下面结合实施例对本发明作进一步详细的描述,但本发明的实施方式不限于此。
实施例1
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(Ni(cod)2)(0.05mmol)、三环己基膦(PCy3)(0.1mmol)、5-甲氧基苯并呋喃(I-1)(0.5mmol)、三乙基硅氢(1mmol)和1,4-二氧六环(5mL),于80℃下搅拌反应12h,停止加热和搅拌,冷却至室温。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-1),所用的柱层析洗脱液为体积比为80∶1的石油醚∶乙酸乙酯混合溶剂,以产率70%得到硅基保护的产物。氢谱图、碳谱图分别如图1和2所示。
1H NMR(400MHz,Chloroform-d)δ7.15-6.92(m,2H),6.85-6.58(m,2H),5.71(d,J=17.8Hz,1H),5.26(d,J=11.1Hz,1H),3.81(s,3H),1.01(t,J=7.9Hz,9H),0.77(q,J=7.9Hz,6H).
13C NMR(101MHz,Chloroform-d)δ153.97,147.04,131.97,129.29,120.08,114.34,113.84,110.67,55.64,6.65,5.17.
MS(EI):89,179,207,235,264.
实施例2
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、三环己基膦(0.1mmol)、5-苯乙烯基苯并呋喃(I-2)(0.5mmol)、三乙基硅氢(1mmol)和1,4-二氧六环(5mL),于80℃下搅拌反应12h,停止加热和搅拌,冷却至室温。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-2),所用的柱层析洗脱液为体积比为80∶1的石油醚∶乙酸乙酯混合溶剂,以产率79%得到硅基保护的产物。氢谱图、碳谱图分别如图3和4所示。
所得产物的结构表征数据如下所示:
1H NMR(400MHz,Chloroform-d)δ7.67(d,J=2.2Hz,1H),7.54(d,J=7.3Hz,2H),7.45-7.33(m,3H),7.32-7.23(m,1H),7.17-6.98(m,3H),6.84(d,J=8.4Hz,1H),5.82(dd,J=17.8,1.3Hz,1H),5.32(dd,J=11.1,1.3Hz,1H),1.06(t,J=7.9Hz,9H),0.83(q,J=7.8Hz,6H).
13C NMR(101MHz,Chloroform-d)δ152.90,137.68,131.92,130.62,129.01,128.66,128.40,127.27,126.97,126.75,126.32,124.58,119.62,114.14,6.68,5.26.
MS(EI):59,125,251,279,336.
实施例3
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、三环己基膦(0.1mmol)、5-N,N-二甲基酰胺基苯并呋喃(I-3)(0.5mmol)、三乙基硅氢(1mmol)和1,4-二氧六环(5mL),于80℃下搅拌反应12h,停止加热和搅拌,冷却至室温。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-3),所用的柱层析洗脱液为体积比为80∶1的石油醚∶乙酸乙酯混合溶剂,以产率79%得到硅基保护的产物。氢谱图、碳谱图分别如图5和6所示。
所得产物的结构表征数据如下所示:
1H NMR(500MHz,Chloroform-d)δ7.57(s,1H),7.21(d,J=8.2Hz,1H),7.00(dd,J=17.8,11.2Hz,1H),6.79(d,J=8.3Hz,1H),5.72(d,J=17.8Hz,1H),5.27(d,J=11.1Hz,1H),3.06(d,J=24.8Hz,6H),0.99(t,J=7.9Hz,9H),0.78(q,J=7.9Hz,6H).
13C NMR(126MHz,Chloroform-d)δ171.69,154.15,131.28,128.99,128.77,127.82,125.75,118.96,114.74,39.82,6.61,5.17.
MS(EI):72,87,248,261,305.
实施例4
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、三环己基膦(0.1mmol)、6-苯基苯并呋喃(I-4)(0.5mmol)、三乙基硅氢(1mmol)和1,4-二氧六环(5mL),于80℃下搅拌反应12h,停止加热和搅拌,冷却至室温。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-4),所用的柱层析洗脱液为纯石油醚,以产率58%得到硅基保护的产物。氢谱图、碳谱图分别如图7和8所示。
所得产物的结构表征数据如下所示:
1H NMR(500MHz,Chloroform-d)δ7.55(t,J=7.3Hz,3H),7.42(t,J=7.6Hz,2H),7.32(t,J=7.4Hz,1H),7.17(d,J=8.0Hz,1H),7.11-6.99(m,2H),5.74(d,J=17.8Hz,1H),5.25(d,J=11.1Hz,1H),1.02(t,J=7.9Hz,9H),0.80(q,J=7.9Hz,6H).
13C NMR(126MHz,Chloroform-d)δ153.36,141.69,140.73,131.63,128.84,127.88,127.41,126.92,126.52,120.20,117.98,113.76,6.77,5.34.
MS(EI):112,225,253,281,310.
实施例5
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、三环己基膦(0.1mmol)、苯并呋喃(I-5)(0.5mmol)、三乙基硅氢(1mmol)和1,4-二氧六环(5mL),于80℃下搅拌反应12h,停止加热和搅拌,冷却至室温。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-5),所用的柱层析洗脱液为纯石油醚,以产率88%得到硅基保护的产物。氢谱图、碳谱图分别如图9和10所示。
所得产物的结构表征数据如下所示:
1H NMR(400MHz,Chloroform-d)δ7.53(dd,J=7.7,1.4Hz,1H),7.21-7.04(m,2H),6.97(t,J=7.5Hz,1H),6.85(d,J=8.1Hz,1H),5.75(dd,J=17.8,1.1Hz,1H),5.28(dd,J=11.1,1.2Hz,1H),1.05(t,J=7.9Hz,9H),0.82(q,J=7.9Hz,6H).
13C NMR(101MHz,Chloroform-d)δ153.03,132.01,128.91,128.63,126.18,121.31,119.39,113.67,6.66,5.25.
MS(EI):77,149,177,205,234.
实施例6
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、三环己基膦(0.1mmol)、3-甲基苯并呋喃(I-6)(0.5mmol)、三乙基硅氢(1mmol)和1,4-二氧六环(5mL),于80℃下搅拌反应12h,停止加热和搅拌,冷却至室温。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-6),所用的柱层析洗脱液为纯石油醚,以产率73%得到硅基保护的产物。氢谱图、碳谱图分别如图11和12所示。
所得产物的结构表征数据如下所示:
1H NMR(400MHz,Chloroform-d)δ7.22(dd,J=7.5,1.6Hz,1H),7.17(td,J=8.0,1.7Hz,1H),6.95(t,J=7.4Hz,1H),6.84(d,J=8.0Hz,1H),5.13(d,J=25.2Hz,2H),2.16(s,3H),1.03(t,J=7.9Hz,9H),0.80(q,J=7.9Hz,6H).
13C NMR(101MHz,Chloroform-d)δ152.73,144.45,135.12,129.53,128.01,121.09,119.34,114.96,23.11,6.67,5.25.
MS(ET):135,163,191,219,248.
实施例7
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、三环己基膦(0.1mmol)、5-苯基苯并呋喃(I-7)(0.5mmol)、三乙基硅氢(1mmol)和1,4-二氧六环(5mL),于80℃下搅拌反应12h,停止加热和搅拌,冷却至室温。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-7),所用的柱层析洗脱液为纯石油醚,以产率88%得到硅基保护的产物。氢谱图、碳谱图分别如图13和14所示。
所得产物的结构表征数据如下所示:
1H NMR(500MHz,Chloroform-d)δ7.70(s,1H),7.56(d,J=8.0Hz,2H),7.41(t,J=7.5Hz,2H),7.37-7.33(m,1H),7.30(t,J=7.4Hz,1H),7.07(dd,J=17.8,11.1Hz,1H),6.86(d,J=8.3Hz,1H),5.77(d,J=17.8Hz,1H),5.27(d,J=11.1Hz,1H),1.02(t,J=7.9Hz,9H),0.80(q,J=8.0Hz,6H).
13C NMR(126MHz,Chloroform-d)δ152.68,140.98,134.31,132.03,129.00,128.70,127.36,126.81,126.74,124.96,119.60,114.05,6.70,5.27.
MS(EI):112,225,253,281,310.
实施例8
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、三环己基膦(0.1mmol)、3-联苯基-5-甲基苯并呋喃(I-8)(0.5mmo1)、三乙基硅氢(1mmol)和1,4-二氧六环(5mL),于80℃下搅拌反应12h,停止加热和搅拌,冷却至室温。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-8),所用的柱层析洗脱液为纯石油醚,以产率69%得到硅基保护的产物。氢谱图、碳谱图分别如图15和16所示。
所得产物的结构表征数据如下所示:
1H NMR(500MHz,Chloroform-d)δ7.57(d,J=7.3Hz,2H),7.49(d,J=8.3Hz,2H),7.43-7.35(m,4H),7.31(t,J=7.4Hz,1H),7.11-7.07(m,1H),7.01(dd,J=8.1,1.8Hz,1H),6.70(d,J=8.1Hz,1H),5.72-5.65(m,1H),5.34-5.28(m,1H),2.30(s,3H),0.79(t,J=7.9Hz,9H),0.52(q,J=7.9Hz,6H).
13C NMR(126MHz,Chloroform-d)δ151.01,147.65,141.19,140.36,140.07,132.76,132.15,130.14,129.36,128.78,127.16,127.11,127.05,126.77,118.82,115.29,20.61,6.66,5.14.
MS(EI):157,189,217,371,400.
实施例9
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、三环己基膦(0.1mmol)、6-甲氧基苯并呋喃(I-9)(0.5mmol)、三乙基硅氢(1mmol)和1,4-二氧六环(5mL),于80℃下搅拌反应12h,停止加热和搅拌,冷却至室温。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-9),所用的柱层析洗脱液为纯石油醚,以产率55%得到硅基保护的产物。氢谱图、碳谱图分别如图17和18所示。
所得产物的结构表征数据如下:
1H NMR(500MHz,Chloroform-d)δ7.32(d,J=8.6Hz,1H),6.86(dd,J=17.8,11.1Hz,1H),6.42(dd,J=8.6,2.5Hz,1H),6.28(d,J=2.5Hz,1H),5.49(dd,J=17.8,1.3Hz,1H),5.02(dd,J=11.1,1.3Hz,1H),3.68(s,3H),0.92(dd,J=9.1,6.8Hz,9H),0.70(t,J=7.9Hz,6H).
13C NMR(126MHz,Chloroform-d)δ160.12,154.00,131.50,126.76,122.03,111.44,106.78,105.46,55.24,6.67,5.22.
MS(EI):89,179,207,249,264.
实施例10
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、三环己基膦(0.1mmol)、3-苯基-5-甲氧基苯并呋喃(I-10)(0.5mmol)、三乙基硅氢(1mmol)和1,4-二氧六环(5mL),于80℃下搅拌反应12h,停止加热和搅拌,冷却至室温。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-10),所用的柱层析洗脱液为纯石油醚,以产率70%得到硅基保护的产物。氢谱图、碳谱图分别如图19和20所示。
所得产物的结构表征数据如下所示:
1H NMR(400MHz,Chloroform-d)δ7.41-7.15(m,6H),6.86(d,J=2.9Hz,1H),6.83-6.74(m,2H),5.71(d,J=1.4Hz,1H),5.36(d,J=1.4Hz,1H),3.81(s,3H),0.83(t,J=7.9Hz,9H),0.54(q,J=7.9Hz,6H).
13C NMR(101MHz,Chloroform-d)δ153.59,147.80,147.10,140.92,133.69,128.00,127.28,126.63,119.57,116.79,115.57,113.76,55.65,6.60,5.03.
MS(EI):59,165,205,219,340.
实施例11
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、ICy·HCl(1,3-二环己基氯化咪唑)(0.075mmol)、2-(4-叔丁基苯基)苯并呋喃(I-11)(0.5mmol)、二甲基叔丁基硅氢(1.5mmol)、叔丁醇锂(0.5mmol)和1,4-二氧六环(2.5mL),于130℃下搅拌反应12h,停止加热和搅拌,冷却至室温。加入1毫升1M浓度的TBAF的四氢呋喃溶液,室温继续搅拌30分钟。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-11),所用的柱层析洗脱液为纯石油醚,以产率81%得到邻烯基苯酚类化合物。氢谱图、碳谱图分别如图21和22所示。
所得产物的结构表征数据如下:
1H NMR(500MHz,Chloroform-d)δ7.39(d,J=7.7Hz,1H),7.35(d,J=8.3Hz,2H),7.26(d,J=8.3Hz,2H),7.21(d,J=16.4Hz,1H),7.03-6.95(m,2H),6.82(t,J=7.5Hz,1H),6.67(d,J=8.0Hz,1H),5.03(s,1H),1.22(s,9H).
13C NMR(126MHz,Chloroform-d)δ152.96,141.06,132.99,130.36,129.17,128.75,128.18,127.23,126.86,120.99,115.52,43.60,34.59,19.64.
MS(EI):133,175,253,309,366.
实施例12
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、ICy·HC1(0.075mmol)、2-(4-甲氧基苯基)苯并呋喃(I-12)(0.5mmol)、二甲基叔丁基硅氢(1.5mmol)、叔丁醇锂(0.5mmol)和1,4-二氧六环(2.5mL),于130℃下搅拌反应12h,停止加热和搅拌,冷却至室温。加入1毫升1M浓度的TBAF的四氢呋喃溶液,室温继续搅拌30分钟。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-12),所用的柱层析洗脱液为纯石油醚,以产率67%得到邻烯基苯酚类化合物。氢谱图、碳谱图分别如图23和24所示。
所得产物的结构表征数据如下所示:
1H NMR(500MHz,Chloroform-d)δ7.53-7.44(m,3H),7.22(d,J=16.4Hz,1H),7.11(dd,J=7.7,1.3Hz,1H),7.06(d,J=16.4Hz,1H),6.93(t,J=7.5Hz,1H),6.90(d,J=8.7Hz,2H),6.82-6.78(m,1H),5.08(s,1H),3.83(s,3H).
13C NMR(126MHz,Chloroform-d)δ159.33,152.86,130.44,129.83,128.29,127.78,127.06,125.01,121.11,120.87,115.89,114.14,55.35.
MS(EI):175,252,268,283,340.
实施例13
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、ICy·HCl(0.075mmol)、2-(2-甲基苯基)苯并呋喃(I-13)(0.5mmol)、二甲基叔丁基硅氢(1.5mmol)、叔丁醇锂(0.5mmol)和1,4-二氧六环(2.5mL),于130℃下搅拌反应12h,停止加热和搅拌,冷却至室温。加入1毫升1M浓度的TBAF的四氢呋喃溶液,室温继续搅拌30分钟。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-13),所用的柱层析洗脱液为纯石油醚,以产率59%得到邻烯基苯酚类化合物。氢谱图、碳谱图分别如图25和26所示。
所得产物的结构表征数据如下所示:
1H NMR(500MHz,Chloroform-d)δ7.61(d,J=7.3Hz,1H),7.57-7.48(m,1H),7.34(d,J=16.2Hz,1H),7.26-7.11(m,5H),6.95(t,J=7.5Hz,1H),6.80(d,J=8.0Hz,1H),5.07(s,1H),2.41(s,3H).
13C NMR(126MHz,Chloroform-d)δ153.07,136.69,135.80,130.40,128.69,128.24,127.59,127.45,126.24,125.49,125.09,124.36,121.15,115.98,19.94.
MS(EI):151,175,251,267,324.
实施例14
在氮气保护下,向反应容器中依次加入双(1,5-环辛二烯)镍(0.05mmol)、ICy·HCl(0.075mmol)、2-呋喃基苯并呋喃(I-14)(0.5mmol)、二甲基叔丁基硅氢(1.5mmol)、叔丁醇锂(0.5mmol)和1,4-二氧六环(2.5mL),于130℃下搅拌反应12h,停止加热和搅拌,冷却至室温。加入1毫升1M浓度的TBAF的四氢呋喃溶液,室温继续搅拌30分钟。将反应液水洗、乙酸乙酯萃取,合并有机相,使用无水硫酸镁干燥,过滤,减压旋蒸去除溶剂,再通过柱层析分离纯化,得到目标产物(II-14),所用的柱层析洗脱液为纯石油醚,以产率76%得到邻烯基苯酚类化合物。氢谱图、碳谱图分别如图27和28所示。
所得产物的结构表征数据如下所示:
1H NMR(500MHz,Chloroform-d)δ7.49-7.37(m,2H),7.25(d,J=16.0Hz,1H),7.11(t,J=7.4Hz,1H),7.02-6.88(m,2H),6.78(d,J=8.0Hz,1H),6.45-6.29(m,2H),5.19(s,1H).
13C NMR(126MHz,Chloroform-d)δ153.60,153.17,142.13,128.60,127.24,124.37,121.67,121.13,118.05,116.08,111.65,108.49.
MS(EI):75,169,225,243,300.
本发明的方法中,在采用镍催化剂进行催化反应时,所述反应的温度为60~130℃,当苯并呋喃化合物中R1为H原子时优选为80℃,当苯并呋喃化合物中R1为苯基、取代的苯基、呋喃基时优选为130℃,反应的时间为8~24小时,优选为12小时。
所述苯并呋喃化合物与硅氢化合物的反应摩尔比为1∶(1~5),当苯并呋喃R1为H原子时优选为1∶2;当苯并呋喃R1为苯基,取代的苯基、呋喃基时优选为1∶3。
所述镍催化剂的加入量与苯并呋喃化合物的摩尔比为(0.05~0.2)∶1,优选为0.1∶1。所述配体的加入量与苯并呋喃化化合物的摩尔比为(0.1~0.4)∶1,优选为0.2∶1。
Claims (8)
1.一种镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法,其特征在于:包括以下步骤:在保护性氛围下,以有机溶剂为反应介质,苯并呋喃化合物与硅氢化合物在镍催化剂、配体或镍催化剂、配体和添加剂的作用下反应,获得含硅保护基的产物即含硅保护基的邻烯基苯酚衍生物;或者脱去含硅保护基,获得邻烯基苯酚衍生物即含酚羟基的邻烯基苯酚衍生物;
所述苯并呋喃化合物的结构为式I;
R1为氢、苯基、取代的苯基、呋喃基;R1中,所述取代的苯基为烷基取代的苯基、烷氧基取代的苯基、苯基取代的苯基、三氟甲氧基苯基;所述烷基取代的苯基中烷基为碳数为1~4的烷基,所述烷氧基取代的苯基中烷氧基为碳数为1~4的烷氧基;
R2为氢、苯基、取代的苯基、烷基;R2中,所述烷基为C1~4烷基;所述取代的苯基为烷基取代的苯基、烷氧基取代的苯基、苯基取代的苯基、三氟甲氧基苯基;所述烷基取代的苯基中烷基为碳数为1~4的烷基,所述烷氧基取代的苯基中烷氧基为碳数为1~4的烷氧基;
R3为氢;
R4为氢、苯基、取代的苯基、烷基、烷氧基、烯烃基、取代的烯烃基、酰胺基;R4中,所述烷基为C1~3烷基;所述烷氧基为甲氧基、乙氧基、丙氧基;所述烯烃基为碳数为2~4的烯烃基;所述取代的苯基为烷基取代的苯基、烷氧基取代的苯基、三氟甲氧基苯基;所述取代的烯烃基为苯乙烯基;所述酰胺基为N,N-二甲基酰胺基,N,N-甲基苯基酰胺基,N,N-二乙基酰胺基;
R5为氢、苯基、烷氧基、烷基、取代的苯基;R5中,所述烷氧基为甲氧基、乙氧基;所述取代的苯基为烷基取代的苯基、烷氧基取代的苯基、三氟甲氧基苯基;
R6为H;
所述硅氢化合物的结构为式II:
R7,R8,R9都为乙基、苯基,或者R7,R8,R9中其中两个为苯基,一个为甲基,或者两个为甲基,一个为叔丁基,或者一个为苯基,两个为甲基;
所述含硅保护基的产物的结构为式III:
所述邻烯基苯酚衍生物结构为式Ⅳ:
式III,式Ⅳ中R1~R9如前面式I,式II所定义;
所述镍催化剂为双(1,5-环辛二烯)镍;
所述配体为正丁基二(1-金刚烷基)膦、三环己基膦、SICy·HCl、ICy·HCl、IPr·HCl或IMes·HCl。
2.根据权利要求1所述镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法,其特征在于:当苯并呋喃化合物中R1为H原子时,配体为三环己基膦;当苯并呋喃R1为苯基、取代的苯基、呋喃基时,配体为氮杂卡宾配体ICy·HCl。
3.根据权利要求1所述镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法,其特征在于:
当苯并呋喃化合物中R1为苯基、取代的苯基、呋喃基时,反应时需加入添加剂,添加剂为叔丁醇钠、叔丁醇钾或叔丁醇锂中一种以上;
所述有机溶剂为THF、1,4-二氧六环、甲苯、苯、甲基环戊己醚、乙二醇二甲醚中一种以上。
4.根据权利要求3所述镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法,其特征在于:所述添加剂为叔丁醇锂;
所述有机溶剂为1,4-二氧六环。
5.根据权利要求1所述镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法,其特征在于:所述反应的温度为60~130℃,反应的时间为8~24小时;
所述苯并呋喃化合物与硅氢化合物的摩尔比为1:(1~5);
所述镍催化剂的加入量与苯并呋喃化合物的摩尔比为(0.05~0.2):1;
所述配体的加入量与苯并呋喃化合物的摩尔比为(0.1~0.4):1。
6.根据权利要求1所述镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法,其特征在于:反应完后,进行后续处理,或者脱去含硅保护基后,进行后续处理;所述后续处理是指淬灭反应,乙酸乙酯萃取,收集有机相,去除有机相中溶剂,柱层析分离;所述去除有机相中溶剂是指去除有机相中水,去除有机溶剂;
所述保护性氛围为氮气或惰性气体。
7.根据权利要求6所述镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法,其特征在于:所述淬灭反应是指向反应体系中加水淬灭;所述去除有机相中水是指采用干燥剂进行干燥,干燥剂为无水硫酸镁,然后过滤;所述去除有机相中有机溶剂是指减压蒸馏去除有机溶剂;
所述柱层析的洗脱液为石油醚或石油醚和乙酸乙酯的混合溶剂,混合溶剂中石油醚和乙酸乙酯的体积比(80~200):1。
8.根据权利要求1所述镍催化的苯并呋喃开环合成邻烯基苯酚衍生物的方法,其特征在于:所述脱去含硅保护基,是指采用四丁基氟化铵将反应后的体系中含硅保护基的产物中含硅保护基脱除,然后后续处理,得到含酚羟基的邻烯基苯酚衍生物。
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