CN1073107C - 2-取代的苯并[b]噻吩类化合物的制备方法 - Google Patents
2-取代的苯并[b]噻吩类化合物的制备方法 Download PDFInfo
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- CN1073107C CN1073107C CN96193031A CN96193031A CN1073107C CN 1073107 C CN1073107 C CN 1073107C CN 96193031 A CN96193031 A CN 96193031A CN 96193031 A CN96193031 A CN 96193031A CN 1073107 C CN1073107 C CN 1073107C
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- iodine
- acid
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- 238000000034 method Methods 0.000 title claims abstract description 42
- -1 2-substituted benzo [b] thiophene compounds Chemical class 0.000 title abstract description 32
- 239000000543 intermediate Substances 0.000 title abstract 2
- 150000001875 compounds Chemical class 0.000 claims abstract description 77
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 22
- 238000002360 preparation method Methods 0.000 claims description 18
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 13
- 229910052794 bromium Inorganic materials 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 10
- 229910052740 iodine Inorganic materials 0.000 claims description 10
- 239000011630 iodine Chemical group 0.000 claims description 10
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 230000031709 bromination Effects 0.000 claims description 5
- 238000005893 bromination reaction Methods 0.000 claims description 5
- 125000001246 bromo group Chemical group Br* 0.000 claims description 4
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 claims description 4
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 125000006239 protecting group Chemical group 0.000 abstract description 9
- 125000004185 ester group Chemical group 0.000 abstract description 2
- 125000000587 piperidin-1-yl group Chemical group [H]C1([H])N(*)C([H])([H])C([H])([H])C([H])([H])C1([H])[H] 0.000 abstract description 2
- 125000004356 hydroxy functional group Chemical group O* 0.000 abstract 5
- 125000004214 1-pyrrolidinyl group Chemical group [H]C1([H])N(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 abstract 1
- OUHGTOMCWYHIPN-UHFFFAOYSA-N FC(F)(F)S(=O)(=O)[IH]Br Chemical compound FC(F)(F)S(=O)(=O)[IH]Br OUHGTOMCWYHIPN-UHFFFAOYSA-N 0.000 abstract 1
- 230000003213 activating effect Effects 0.000 abstract 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 24
- 150000003839 salts Chemical class 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 17
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 15
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 12
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical class C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 239000002904 solvent Substances 0.000 description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 4
- 238000005481 NMR spectroscopy Methods 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- YNCYPMUJDDXIRH-UHFFFAOYSA-N benzo[b]thiophene-2-boronic acid Chemical compound C1=CC=C2SC(B(O)O)=CC2=C1 YNCYPMUJDDXIRH-UHFFFAOYSA-N 0.000 description 3
- 239000004327 boric acid Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 239000012442 inert solvent Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012044 organic layer Substances 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000007520 diprotic acids Chemical class 0.000 description 2
- DGXRZJSPDXZJFG-UHFFFAOYSA-N docosanedioic acid Chemical compound OC(=O)CCCCCCCCCCCCCCCCCCCCC(O)=O DGXRZJSPDXZJFG-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000012336 iodinating agent Substances 0.000 description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical group II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- UQPUONNXJVWHRM-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 UQPUONNXJVWHRM-UHFFFAOYSA-N 0.000 description 2
- 102000004196 processed proteins & peptides Human genes 0.000 description 2
- 108090000765 processed proteins & peptides Proteins 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical compound [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- UWYVPFMHMJIBHE-OWOJBTEDSA-N (e)-2-hydroxybut-2-enedioic acid Chemical class OC(=O)\C=C(\O)C(O)=O UWYVPFMHMJIBHE-OWOJBTEDSA-N 0.000 description 1
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- HCSBTDBGTNZOAB-UHFFFAOYSA-N 2,3-dinitrobenzoic acid Chemical compound OC(=O)C1=CC=CC([N+]([O-])=O)=C1[N+]([O-])=O HCSBTDBGTNZOAB-UHFFFAOYSA-N 0.000 description 1
- HCVAHOALJPEBKZ-UHFFFAOYSA-N 2-acetyl-3-aminobenzoic acid Chemical class CC(=O)C1=C(N)C=CC=C1C(O)=O HCVAHOALJPEBKZ-UHFFFAOYSA-N 0.000 description 1
- QKSGIGXOKHZCQZ-UHFFFAOYSA-N 2-chloro-2-phenylacetic acid Chemical compound OC(=O)C(Cl)C1=CC=CC=C1 QKSGIGXOKHZCQZ-UHFFFAOYSA-N 0.000 description 1
- HMGCGUWFPZVPEK-UHFFFAOYSA-N 2-naphthalen-2-ylbenzoic acid Chemical compound OC(=O)C1=CC=CC=C1C1=CC=C(C=CC=C2)C2=C1 HMGCGUWFPZVPEK-UHFFFAOYSA-N 0.000 description 1
- OFJWFSNDPCAWDK-UHFFFAOYSA-N 2-phenylbutyric acid Chemical class CCC(C(O)=O)C1=CC=CC=C1 OFJWFSNDPCAWDK-UHFFFAOYSA-N 0.000 description 1
- WHBMMWSBFZVSSR-UHFFFAOYSA-N 3-hydroxybutyric acid Chemical class CC(O)CC(O)=O WHBMMWSBFZVSSR-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 206010065687 Bone loss Diseases 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-L Malonate Chemical compound [O-]C(=O)CC([O-])=O OFOBLEOULBTSOW-UHFFFAOYSA-L 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- QIAFMBKCNZACKA-UHFFFAOYSA-N N-benzoylglycine Chemical compound OC(=O)CNC(=O)C1=CC=CC=C1 QIAFMBKCNZACKA-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- PVNIIMVLHYAWGP-UHFFFAOYSA-N Niacin Chemical compound OC(=O)C1=CC=CN=C1 PVNIIMVLHYAWGP-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-L Phosphate ion(2-) Chemical compound OP([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-L 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical class [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- DTQVDTLACAAQTR-UHFFFAOYSA-M Trifluoroacetate Chemical compound [O-]C(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-M 0.000 description 1
- ZZXDRXVIRVJQBT-UHFFFAOYSA-M Xylenesulfonate Chemical compound CC1=CC=CC(S([O-])(=O)=O)=C1C ZZXDRXVIRVJQBT-UHFFFAOYSA-M 0.000 description 1
- IPBVNPXQWQGGJP-UHFFFAOYSA-N acetic acid phenyl ester Natural products CC(=O)OC1=CC=CC=C1 IPBVNPXQWQGGJP-UHFFFAOYSA-N 0.000 description 1
- CGIHPACLZJDCBQ-UHFFFAOYSA-N acibenzolar Chemical group SC(=O)C1=CC=CC2=C1SN=N2 CGIHPACLZJDCBQ-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000010933 acylation Effects 0.000 description 1
- 238000005917 acylation reaction Methods 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000003289 ascorbyl group Chemical class [H]O[C@@]([H])(C([H])([H])O*)[C@@]1([H])OC(=O)C(O*)=C1O* 0.000 description 1
- SRSXLGNVWSONIS-UHFFFAOYSA-M benzenesulfonate Chemical compound [O-]S(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-M 0.000 description 1
- 229940077388 benzenesulfonate Drugs 0.000 description 1
- 125000004196 benzothienyl group Chemical group S1C(=CC2=C1C=CC=C2)* 0.000 description 1
- 230000004071 biological effect Effects 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
- 238000004364 calculation method Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- KVSASDOGYIBWTA-UHFFFAOYSA-N chloro benzoate Chemical compound ClOC(=O)C1=CC=CC=C1 KVSASDOGYIBWTA-UHFFFAOYSA-N 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 229940114081 cinnamate Drugs 0.000 description 1
- 229950002314 closilate Drugs 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- GHVNFZFCNZKVNT-UHFFFAOYSA-M decanoate Chemical compound CCCCCCCCCC([O-])=O GHVNFZFCNZKVNT-UHFFFAOYSA-M 0.000 description 1
- 238000006114 decarboxylation reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical class [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical compound OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229950007655 esilate Drugs 0.000 description 1
- ZKQFHRVKCYFVCN-UHFFFAOYSA-N ethoxyethane;hexane Chemical compound CCOCC.CCCCCC ZKQFHRVKCYFVCN-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
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- 238000007429 general method Methods 0.000 description 1
- 230000026030 halogenation Effects 0.000 description 1
- 238000005658 halogenation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 description 1
- YPGCWEMNNLXISK-UHFFFAOYSA-N hydratropic acid Chemical class OC(=O)C(C)C1=CC=CC=C1 YPGCWEMNNLXISK-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 229940071870 hydroiodic acid Drugs 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- KQNPFQTWMSNSAP-UHFFFAOYSA-N isobutyric acid Chemical compound CC(C)C(O)=O KQNPFQTWMSNSAP-UHFFFAOYSA-N 0.000 description 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical class CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229940049920 malate Drugs 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N malic acid Chemical compound OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- IWYDHOAUDWTVEP-UHFFFAOYSA-M mandelate Chemical compound [O-]C(=O)C(O)C1=CC=CC=C1 IWYDHOAUDWTVEP-UHFFFAOYSA-M 0.000 description 1
- 125000005341 metaphosphate group Chemical group 0.000 description 1
- 150000005342 methoxybenzoic acids Chemical class 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
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- KVBGVZZKJNLNJU-UHFFFAOYSA-N naphthalene-2-sulfonic acid Chemical class C1=CC=CC2=CC(S(=O)(=O)O)=CC=C21 KVBGVZZKJNLNJU-UHFFFAOYSA-N 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 229940049953 phenylacetate Drugs 0.000 description 1
- WLJVXDMOQOGPHL-UHFFFAOYSA-N phenylacetic acid Chemical compound OC(=O)CC1=CC=CC=C1 WLJVXDMOQOGPHL-UHFFFAOYSA-N 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 229920001184 polypeptide Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- UORVCLMRJXCDCP-UHFFFAOYSA-M propynoate Chemical compound [O-]C(=O)C#C UORVCLMRJXCDCP-UHFFFAOYSA-M 0.000 description 1
- GZUITABIAKMVPG-UHFFFAOYSA-N raloxifene Chemical compound C1=CC(O)=CC=C1C1=C(C(=O)C=2C=CC(OCCN3CCCCC3)=CC=2)C2=CC=C(O)C=C2S1 GZUITABIAKMVPG-UHFFFAOYSA-N 0.000 description 1
- 229960004622 raloxifene Drugs 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229940116351 sebacate Drugs 0.000 description 1
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 229960004249 sodium acetate Drugs 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- TYFQFVWCELRYAO-UHFFFAOYSA-L suberate(2-) Chemical compound [O-]C(=O)CCCCCCC([O-])=O TYFQFVWCELRYAO-UHFFFAOYSA-L 0.000 description 1
- 229940086735 succinate Drugs 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 229950004288 tosilate Drugs 0.000 description 1
- WBYWAXJHAXSJNI-VOTSOKGWSA-M trans-cinnamate Chemical compound [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 description 1
- NHDIQVFFNDKAQU-UHFFFAOYSA-N tripropan-2-yl borate Chemical compound CC(C)OB(OC(C)C)OC(C)C NHDIQVFFNDKAQU-UHFFFAOYSA-N 0.000 description 1
- 229940071104 xylenesulfonate Drugs 0.000 description 1
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- 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
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- 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
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- 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
- C07D333/62—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes 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 carbon atoms of the hetero ring
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Abstract
本发明提供制备式(Ⅰ)的化合物的方法,在式(Ⅰ)中,R1是-H、-OH,或-OR3,其中,R3是羟基保护基;R2是-H、-OH,或-OR4,其中,R4是羟基保护基,本发明还提供制备式(Ⅶ)化合物的方法,在式(Ⅶ)中,R1是-H、-OH,或-OR3,其中R3是羟基保护基;R2是-H、-OH,或-OR4,其中R4是羟基保护基;R5是1-哌啶基、1-吡咯烷基、甲基-1-吡咯烷基、二甲基-1-吡咯烷基、4-吗啉代、二甲基氨基、二乙基氨基、二异丙基氨基,或1-六亚甲基亚氨基;R6是溴、氯、碘,或活化酯基;n是2或3。另外,还提供了制备式(Ⅶ)化合物的方法以及式(Ⅸ)中间体,在式(Ⅸ)中,R1′是-OH或-OR3,其中R3是羟基保护基;Z是溴、碘、三氟甲磺酸酯基或-B(OH)2。
Description
本发明涉及药物和有机化学领域,并提供制备2-取代的苯并〔b〕噻吩类化合物的方法,这些化合物中的某些可用作制备药学活性化合物的中间体,其它化合物用于,特别是用于治疗绝经后妇女的骨质疏松症。
通式Ⅶ的化合物,或其可药用的盐:式中:R1是-H、-OH或-OR3,其中R3是羟基保护基;
R2是-H、-OH或-OR4,其中R4是羟基保护基;
R5是1-哌啶基、1-吡咯烷基、甲基-1-吡咯烷基、二甲基-1-吡咯烷基、4-吗啉代、二甲基氨基、二乙基氨基、二异丙基氨基,或1-六亚甲基亚氨基;
n是2或3,已知用作抗受精剂(例如参见US4,133,814)。某些通式Ⅶ化合物,尤其是其中的R1、R2和n如上述所定义的,R5是1-哌啶基、1-吡咯烷基,或1-六亚甲基亚氨基的化合物,或其可药用的盐,众所周知是常用于阻抑人骨质流失(例如参见U.S.5,393,763)。此在现有技术中称为raloxifene的式Ⅶ的化合物,其中,R1和R2分别是-OH,n是2,R5是1-哌啶基,或其可药用的盐,特别是盐酸盐,是本文所讨论方法的优选产物。
由于制备本发明的式Ⅰ化合物的Jones方法成本高和耗时长,所以急需一种制备式Ⅰ化合物,最终为式Ⅻ化合物的廉价和更直接的方法,并且是本领域的一个重大进展。所以,本发明提供了制备式Ⅰ和Ⅶ以及其新的中间体的新方法。
本发明提供制备式Ⅰ化合物的方法:其包括:
R1是-H、-OH,或OR3,其中R3是羟基保护基;
R2是-H、-OH,或OR4,其中R4是羟基保护基;
X是溴、碘或三氟甲磺酸酯基。
本发明还提供一种制备式Ⅰ化合物的方法:其包括:
b)所说的式Ⅴ化合物同式Ⅵ化合物偶合:式中:
R1是-H、-OH,或OR3,在其中R3是羟基保护基;
R2是-H、-OH,或OR4,在其中R4是羟基保护基;
X是溴、碘或三氟甲磺酸酯基。
此外,本发明提供的制备式Ⅰ的化合物的方法,其包含本发明上述方法中之一的步骤a)和步骤b),还包含
R1是-H、-OH,或OR3,其中,R3是羟基保护基;
R2是-H、-OH,或OR4,其中,R4是羟基保护基;
R5是1-哌啶基、1-吡咯烷基、甲基-1-吡咯烷基、二甲基-1-吡咯烷基、4-吗啉代、二甲基氨基、二乙基氨基、二异丙基氨基,或1-六亚甲基亚氨基;
R1′是-OH或-OR3,在其中R3是羟基保护基;
Z是溴、碘、三氟甲磺酸酯基或-B(OH)2,此化合物用作制备本发明式Ⅰ和Ⅶ化合物的中间体。
本发明一方面是提供制备式Ⅰ的苯并噻吩化合物的方便方法。
本发明方法的原料是式Ⅱ的化合物:式中R1如上述定义,此化合物可在市场购得,或用熟知的方法用已知或市场可购得的原料制得〔例如参见Graham,S.L.,等人的J.Med.Chem.,32(12):2548-2554(1989)〕。
在本便利的方法中,制得式Ⅱ化合物的芳基硼酸衍生物,得到式Ⅲ的化合物,然后同通式Ⅳ的芳烃偶合,得到式Ⅰ的化合物。或者,将式Ⅱ化合物选择地卤化,或在2-位上置一三氟甲磺酸酯基离去基团,得到式Ⅴ的化合物,然后同通式Ⅵ的芳基硼酸化合物偶合,得到式Ⅰ化合物。这些反应各示于下面方案Ⅰ的路线A和路线B。
方案Ⅰ式中R1、R2和X如上述定义。
当R1和/或R2各为OR3和OR4时,R3和R4表示羟基保护基,此保护基通常不是最后具有治疗活性化合物式Ⅶ的基团,而只是在合成过程中故意引入的保护基团,以保护在化学操作中其他会发生反应的某基团,而在合成的某一后面步骤中加以除去。由于带有这些保护基团的化合物的重要性主要是作为化学中间体(当然,某些衍生物也显示出生物活性),它们的精确结构是不重要的。在许多标准文献中,例如ProtectiveGroups in Organic Chemistry(有机化学中的保护基),PlenumPress(London and New York,1973);Green,T.W.,ProtectiveGroups in Organic Synthesis(有机合成中的保护基),Wiley NewYork,1981;和The Peptides,Vol.I(多肽,卷Ⅰ),Schrooder andLubke,Academic Press(London and New York,1965),都讨论了这些保护基的生成,除去,和可能的再生成的许多反应。
代表性的羟基保护基包括,例如-C1-C4烷基、-CO-(C1-C6烷基)、-SO2(C4-C6烷基)和-CO-Ar,其中Ar为选择性取代的苯基。术语“取代的苯基”指的是具有一个或多个选自C1-C4烷基、C1-C4烷氧基、羟基、硝基、卤素,和三(氯或氟)甲基的取代基的苯基。其中,甲基是更优选的。
上面和整个本说明书中所用的普通化学名词具有其通常意义。例如,“C1-C4烷基”指的是直链的或支链的含1-4个碳原子的脂族链,包括诸如甲基、乙基、丙基、异丙基、丁基、正丁基等基团。“卤素”指的是溴、氯、氟和碘。
在方案Ⅰ的路线A的第一步,用标准的方法生成式Ⅲ的2-位的芳基硼酸。一般来说,用稍为过量的溶于己烷中的正-烷基锂在一适当的溶剂中,并且常是在惰性气体,如氮下,处理式Ⅱ的化合物,然后缓慢或逐滴加入适当的三烷基硼烷。
适宜的溶剂包括惰性溶剂或溶剂的混合物,诸如二乙醚,二噁烷和四氢呋喃(THF)。其中THF,特别是无水THF,是优选的。
用于本反应的优选的硼酸三烷基酯是硼酸三异丙基酯。
然后将本反应的产物式Ⅲ的化合物同式Ⅳ的芳基化合物反应,通过标准的Suzuki偶合方法得到式Ⅰ的化合物。其中,R2是-H或OR3,而R3是羟基保护基的式Ⅳ化合物,是由市售的化合物通过本领域专业人员熟知的方法制得的〔例如参见Advanced Organic Chemistry:Reactions,Mechanisms,and Structure,4th Eclition(高等有机化学:反应,机理和结构,第四版)(J.March,ed.,John Wiley and Sons,Inc.,1992);和Suzuki.A.,Pure and Appl.Chem.,6(2):213-222(1994)〕。
在本偶合反应中,稍微过量的式Ⅳ化合物在钯催化剂和适当的碱存在下在如甲苯这样的惰性溶剂中,同当量的式Ⅲ化合物反应。
尽管各种钯催化剂都可催化这一偶合反应,但通常选用的催化剂是反应专一的。这样,在本反应中,更优选的是用四重三苯膦钯。
同样,在本偶合反应中可使用各种碱,但是,优选使用碱金属碳酸盐,特别是2N的碳酸钠。
本步所用的温度应足以完成偶合反应。一般地说,将反应混合物加热回流2-4小时是足够的并且是优选的。
在方案Ⅰ的路线B中,第一步包括用标准方法将式Ⅱ化合物的2-位溴化,碘化或生成三氟甲磺酸酯基离去基团。一般地说,当溴化或碘化时,式Ⅱ化合物在一适当的溶剂以及常是在如氮那样的惰性气体下同稍微过量的溶于己烷的正丁基锂反应,接着,逐滴加入稍微过量的溶于适当溶剂中的所要求的溴化或碘化剂。优选的碘化剂是碘,优选的溴化剂包括溴和N-溴代琥珀酰亚胺。
适宜的溶剂包括惰性溶剂或溶剂的混合物,诸如二乙醚,二噁烷或THF。THF是优选的,无水THF是特别优选的。
本反应任选在温度约为-75℃-85℃范围内进行。
然后,将上述反应的产物,式Ⅴ的卤代芳烃,同通式Ⅵ的芳基硼酸化合物偶合,得到通式Ⅰ的化合物。此偶合反应的优选反应条件如同在上面方案1的路线A中涉及的式Ⅲ和式Ⅳ的偶合反应所讨论的一样,
在方案Ⅰ所示的方法和本文所讨论的方法可以在分开的步骤中进行,这时,每步反应产物要进行提纯和表征,或者在路线A和在路线B中所示的方法就地进行。这样,本发明的方法优选在单一容器中进行。
Z是溴、碘、三氟甲磺酸酯基或-B(OH)2。
在本发明的另一方面是制备式Ⅶ化合物的方法,此制备方法包含方案Ⅰ路线A和路线B中所示的各步,还包含
R2是-H、-OH,或OR4,其中R4是羟基保护基;
R5是1-哌啶基、1-吡咯烷基、甲基-1-吡咯烷基、二甲基-1-吡咯烷基、4-吗啉代、二甲基氨基、二乙基氨基、二异丙基氨基,或1-六亚甲基亚氨基;
R6是溴、氯、碘,或活化的酯基;以及
n是2或3;
d)任选除去R3和/或R4羟基保护基;以及
e)任选生成所说式Ⅶ化合物的可药用的盐。
c)、d)和e)步骤的方法在本领域内单独或共同都是熟知的,并在U.S.4,358,593,4,418,068,4,133,814和4,380,635中讨论过,在本文中用作参考。
虽然游离碱形式的式Ⅶ化合物可以用于上述的医学治疗,但优选是制备和使用可药用的盐的形式。因此,式Ⅶ化合物主要同许多有机和无机酸形成可药用的酸加成盐,并包括常用在药物化学上的生理上可接受的盐。这些盐也是本发明的一部分。用来形成这些盐的典型的无机酸包括盐酸、氢溴酸、氢碘酸、硝酸、硫酸、磷酸、次磷酸等。由有机酸,如脂族单和二羧酸、苯基取代的链烷酸、羟基链烷酸和羟基链烷二酸,芳族酸、脂族和芳族磺酸等制得的盐也可应用。因此,这些可药用的盐包括醋酸盐、苯基醋酸盐、三氟醋酸盐、丙烯酸盐、抗坏血酸盐、苯甲酸盐、氯代苯甲酸盐、二硝基苯甲酸盐、羟基苯甲酸盐、甲氧基苯甲酸盐、甲基苯甲酸盐、邻-乙酰氧基苯甲酸盐、萘-2-苯甲酸盐、溴化物、异丁酸盐、苯基丁酸盐、β-羟基丁酸盐、丁炔-1,4-二酸盐、己炔-1,4-二酸盐、癸酸盐、辛酸盐、氯化物、肉桂酸盐、柠檬酸盐、甲酸盐、富马酸盐、乙醇酸盐、庚酸盐、马尿酸盐、乳酸盐、苹果酸盐、马来酸盐、羟基马来酸盐、丙二酸盐、扁桃酸盐、甲磺酸盐、烟酸盐、异烟酸盐、硝酸盐、草酸盐、邻苯二甲酸盐、对苯二甲酸盐、磷酸盐、一氢磷酸盐、二氢磷酸盐、偏磷酸盐、焦磷酸盐、丙炔酸盐、丙酸盐、苯基丙酸盐、水杨酸盐、癸二酸盐、琥珀酸盐、辛二酸盐、硫酸盐、硫酸氢盐、焦硫酸盐、亚硫酸盐、亚硫酸氢盐、磺酸盐、苯磺酸盐、对-溴代苯基磺酸盐、氯苯磺酸盐、乙磺酸盐、2-羟基乙磺酸盐、甲磺酸盐、萘-1-磺酸盐、萘-2-磺酸盐、对甲苯磺酸盐、二甲苯磺酸盐、酒石酸盐等。盐酸盐是优选盐。
下面的实施例用于进一步说明本发明化合物的制备。不能由于任何下列实施例而使本发明范围受到限制。
在-60℃下,将正丁基锂(76.2毫升,0.122摩尔,在己烷中的1.6摩尔的溶液)通过注射器逐滴加到6-甲氧基苯并〔b〕噻吩(18.13克,111摩尔)溶于150毫升的无水四氢呋喃(THF)的溶液中。搅拌30分钟后,通过注射器加入硼酸三异丙酯(28.2毫升,122摩尔)。将得到的混合物逐步升温到0℃。然后,在1当量的盐酸和醋酸乙酯(各为300毫升)之间分配。将各层分开后,用硫酸钠干燥有机层。在真空下浓缩,得到白色固体,由乙醚己烷研制,过滤得到16.4克(71%)6-甲氧基苯并〔b〕噻吩-2-基硼酸的白色固体,熔点200℃(分解),1H NMR(DMSO-d6)d7.83(s,1H),7.78(d,J=8.6Hz,1H),7.51(d,J=2.0Hz,1H),6.97(dd,J=8.6,2.0Hz,1H),3.82(s,3H)。FD ms:208。
苯并〔b〕噻吩-2-基硼酸(已知化合物)用相似的方法制得。
在6-甲氧基苯并〔b〕噻吩-2-基硼酸(1.00克,4.81毫摩尔)溶于甲苯(20毫升)的溶液中,加入4-碘代苯甲醚(1.24克,5.29毫摩尔),然后加入四重三苯膦钯(0.17克,0.15毫摩尔)。在此溶液中,加入5.0毫升的2当量的碳酸钠溶液。将得到的混合物加热回流2小时。冷却后,生成白色沉淀(〔6-甲氧基-2-(4-甲氧基苯基)〕苯并〔b〕噻吩)。过滤收集此固体并用醋酸乙酯洗。滤液在醋酸乙酯和饱和的碳酸氢钠溶液之间进行分配。分离各层,用硫酸钠干燥有机层。在真空下浓缩,得到白色固体(附加的〔6-甲氧基-2-(4-甲氧基苯基)〕苯并〔b〕噻吩),过滤收集此产物。总的收率是1.25克,(96%)。熔点190-194℃。1H NMR(DMSO-d6)δ7.71-7.63(m,3H),7.61(s,1H),7.53(d,J=2.0Hz,1H),7.03(d,J=9.0Hz,2H),6.99(dd,J=9.0,2.0Hz,1H),3.83(s,3H),3.81(s,3H)。对C16H14O2S的分析计算值:C,71.08,H,5.22。实验值:C,71.24,H,5.26。
另外,通过在二氧化硅上的色谱法可以实现提纯。
在-78℃下,在6-甲氧基苯并〔b〕噻吩(5.00克,30.49毫摩尔)溶于200毫升无水THF的溶液中,加入正丁基锂(20毫升,32.01毫摩尔,在己烷中的1.6摩尔溶液)。搅拌15分钟后,用套管逐滴加入I2(8.10克,32.01毫摩尔)溶于25毫升的无水THF中的溶液。使所得到的混合物逐步升温到室温。通过在醋酸乙酯/盐水(各为150毫升)间分配使反应骤停。分离各层,用硫酸钠干燥有机层。在真空中浓缩,得到褐色固体。将产物在己烷中重结晶,得到6.70克(75%)的6-甲氧基-2-碘代苯并〔b〕噻吩,熔点75-77℃。1H NMR(CDCl3)d7.59(d,J=8.6Hz,1H),7.42(s,1H),7.22(d,J=2.0Hz,1H),6.92(dd,J=8.6,2.0Hz,1H),3.86(s,3H)。FD ms:290。对C9H7OSI的分析,计算值:C,37.26,H,2.43。实验值:C,37.55,H,2.43。
按照上述的一般方法,使6-甲氧基-2-碘代苯并〔b〕噻吩同4-甲氧基苯基硼酸反应,得到〔6-甲氧基-2-(4-甲氧基苯基)〕苯并〔b〕噻吩,产率为80%。
Claims (21)
2.权利要求1的方法,其中,R1是-OR3和R2是-OR4,R3和R4各是C1-C4烷基。
3.权利要求2的方法,其中,R3和R4各为甲基。
4.权利要求3的方法,其中X是碘。
5.权利要求4的方法,其中步骤a)和b)在同一容器中进行。
6.权利要求1的方法,其中步骤a)和b)在同一容器中进行。
8.权利要求7的方法,其中R1是OR3和R2是OR4,R3和R4各为C1-C4烷基。
9.权利要求8的方法,其中R3和R4各为甲基。
10.权利要求9的方法,其中X是碘。
11.权利要求10的方法,其中步骤a)和b)在同一容器中进行。
12.权利要求7的方法,其中步骤a)和b)在同一容器中进行。
14.权利要求13的化合物,其中R1′是-OR3,R3如权利要求13的定义。
15.权利要求13的化合物,其中R3是甲基。
16.权利要求15的化合物,其中Z是溴。
17.权利要求15的化合物,其中Z是碘。
18.权利要求15的化合物,其中Z是-B(OH)2。
19.权利要求13的化合物,其中Z是溴。
20.权利要求13的化合物,其中Z是碘。
21.权利要求13的化合物,其中Z是-B(OH)2。
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US5614639A (en) | 1997-03-25 |
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