CN103788010B - 非布索坦中间体及其制备方法 - Google Patents
非布索坦中间体及其制备方法 Download PDFInfo
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- CN103788010B CN103788010B CN201210431202.2A CN201210431202A CN103788010B CN 103788010 B CN103788010 B CN 103788010B CN 201210431202 A CN201210431202 A CN 201210431202A CN 103788010 B CN103788010 B CN 103788010B
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- Prior art keywords
- reaction
- formula
- grignard
- febuxostat
- dehydrating agent
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- BQSJTQLCZDPROO-UHFFFAOYSA-N febuxostat Chemical compound C1=C(C#N)C(OCC(C)C)=CC=C1C1=NC(C)=C(C(O)=O)S1 BQSJTQLCZDPROO-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229960005101 febuxostat Drugs 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 86
- 239000012024 dehydrating agents Substances 0.000 claims abstract description 23
- 150000001875 compounds Chemical class 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims description 69
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 54
- -1 2-bromo-4-methylthiazole carboxylate benzyl ester Chemical compound 0.000 claims description 40
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims description 26
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 26
- 150000004795 grignard reagents Chemical class 0.000 claims description 25
- 230000035484 reaction time Effects 0.000 claims description 22
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 22
- 238000003747 Grignard reaction Methods 0.000 claims description 21
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007818 Grignard reagent Substances 0.000 claims description 20
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 18
- 239000000010 aprotic solvent Substances 0.000 claims description 18
- 238000006297 dehydration reaction Methods 0.000 claims description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 17
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 15
- 239000011777 magnesium Substances 0.000 claims description 15
- 229910052749 magnesium Inorganic materials 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical group BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 12
- 229910052794 bromium Inorganic materials 0.000 claims description 12
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 11
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 10
- 235000019270 ammonium chloride Nutrition 0.000 claims description 10
- 239000003153 chemical reaction reagent Substances 0.000 claims description 10
- QAEDZJGFFMLHHQ-UHFFFAOYSA-N trifluoroacetic anhydride Chemical compound FC(F)(F)C(=O)OC(=O)C(F)(F)F QAEDZJGFFMLHHQ-UHFFFAOYSA-N 0.000 claims description 10
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 8
- 229910052740 iodine Chemical group 0.000 claims description 8
- 239000011630 iodine Chemical group 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- 229910052736 halogen Inorganic materials 0.000 claims description 6
- 150000002367 halogens Chemical group 0.000 claims description 6
- 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 claims description 6
- 230000002378 acidificating effect Effects 0.000 claims description 4
- YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical compound O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 claims description 4
- DLYUQMMRRRQYAE-UHFFFAOYSA-N phosphorus pentoxide Inorganic materials O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- AQIMPRZQCKYTCG-UHFFFAOYSA-N C(=O)OCC1=CC=CC=C1.BrC=1SC=C(N1)C Chemical compound C(=O)OCC1=CC=CC=C1.BrC=1SC=C(N1)C AQIMPRZQCKYTCG-UHFFFAOYSA-N 0.000 claims description 2
- 125000001246 bromo group Chemical group Br* 0.000 claims 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims 2
- KVNYFPKFSJIPBJ-UHFFFAOYSA-N ortho-diethylbenzene Natural products CCC1=CC=CC=C1CC KVNYFPKFSJIPBJ-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 abstract description 4
- 231100000331 toxic Toxicity 0.000 abstract description 3
- 230000002588 toxic effect Effects 0.000 abstract description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 63
- 239000000543 intermediate Substances 0.000 description 46
- 239000000047 product Substances 0.000 description 26
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 18
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 18
- 238000006460 hydrolysis reaction Methods 0.000 description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 238000001514 detection method Methods 0.000 description 13
- 238000003756 stirring Methods 0.000 description 13
- 239000003960 organic solvent Substances 0.000 description 12
- 238000004128 high performance liquid chromatography Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000012535 impurity Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 10
- 239000002904 solvent Substances 0.000 description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 9
- 238000004896 high resolution mass spectrometry Methods 0.000 description 9
- 239000012074 organic phase Substances 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 8
- SUAKRJMTORILHI-UHFFFAOYSA-N benzyl 2-[3-cyano-4-(2-methylpropoxy)phenyl]-4-methyl-1,3-thiazole-5-carboxylate Chemical compound C1=C(C#N)C(OCC(C)C)=CC=C1C1=NC(C)=C(C(=O)OCC=2C=CC=CC=2)S1 SUAKRJMTORILHI-UHFFFAOYSA-N 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 8
- 230000007062 hydrolysis Effects 0.000 description 8
- 239000003999 initiator Substances 0.000 description 8
- 238000004949 mass spectrometry Methods 0.000 description 8
- 238000010907 mechanical stirring Methods 0.000 description 8
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 8
- 239000008346 aqueous phase Substances 0.000 description 7
- 230000018044 dehydration Effects 0.000 description 7
- 125000004093 cyano group Chemical group *C#N 0.000 description 6
- 239000005457 ice water Substances 0.000 description 6
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 6
- 238000010791 quenching Methods 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 238000005481 NMR spectroscopy Methods 0.000 description 4
- LEHOTFFKMJEONL-UHFFFAOYSA-N Uric Acid Chemical compound N1C(=O)NC(=O)C2=C1NC(=O)N2 LEHOTFFKMJEONL-UHFFFAOYSA-N 0.000 description 4
- TVWHNULVHGKJHS-UHFFFAOYSA-N Uric acid Natural products N1C(=O)NC(=O)C2NC(=O)NC21 TVWHNULVHGKJHS-UHFFFAOYSA-N 0.000 description 4
- 125000003172 aldehyde group Chemical group 0.000 description 4
- 239000012044 organic layer Substances 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 229940116269 uric acid Drugs 0.000 description 4
- 229910052725 zinc Chemical group 0.000 description 4
- 239000011701 zinc Chemical group 0.000 description 4
- FNMDFUJKRFOYIO-UHFFFAOYSA-N 5-bromo-2-(2-methylpropoxy)benzamide Chemical compound CC(C)COC1=CC=C(Br)C=C1C(N)=O FNMDFUJKRFOYIO-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-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
- 150000007513 acids Chemical class 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 3
- 229920000137 polyphosphoric acid Polymers 0.000 description 3
- 239000003586 protic polar solvent Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000001308 synthesis method Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- PAAZPARNPHGIKF-UHFFFAOYSA-N 1,2-dibromoethane Chemical compound BrCCBr PAAZPARNPHGIKF-UHFFFAOYSA-N 0.000 description 2
- 0 CC(N=C(*)*1)=C1*(OCC1=CC=CCC1)=O Chemical compound CC(N=C(*)*1)=C1*(OCC1=CC=CCC1)=O 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 201000005569 Gout Diseases 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical group C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- 108010093894 Xanthine oxidase Proteins 0.000 description 2
- 102100033220 Xanthine oxidase Human genes 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Chemical group 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000010189 synthetic method Methods 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- ZZPNDIHOQDQVNU-UHFFFAOYSA-N 2-hydroxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane Chemical compound CC1(C)OB(O)OC1(C)C ZZPNDIHOQDQVNU-UHFFFAOYSA-N 0.000 description 1
- SFLMFHMYVDQCSF-UHFFFAOYSA-N CC(C)CCc1c(C=N)cc(C(C2)NC(C)=C2C(OCc2ccccc2)=O)cc1 Chemical compound CC(C)CCc1c(C=N)cc(C(C2)NC(C)=C2C(OCc2ccccc2)=O)cc1 SFLMFHMYVDQCSF-UHFFFAOYSA-N 0.000 description 1
- 201000001431 Hyperuricemia Diseases 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000007806 chemical reaction intermediate Substances 0.000 description 1
- DOBRDRYODQBAMW-UHFFFAOYSA-N copper(i) cyanide Chemical compound [Cu+].N#[C-] DOBRDRYODQBAMW-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- AEOCXXJPGCBFJA-UHFFFAOYSA-N ethionamide Chemical compound CCC1=CC(C(N)=S)=CC=N1 AEOCXXJPGCBFJA-UHFFFAOYSA-N 0.000 description 1
- RDULEYWUGKOCMR-UHFFFAOYSA-N ethyl 2-chloro-3-oxobutanoate Chemical compound CCOC(=O)C(Cl)C(C)=O RDULEYWUGKOCMR-UHFFFAOYSA-N 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- DUJKMJZZYGMSQR-UHFFFAOYSA-N fluoromethylsulfonyl fluoromethanesulfonate Chemical compound FCS(=O)(=O)OS(=O)(=O)CF DUJKMJZZYGMSQR-UHFFFAOYSA-N 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- UKVIEHSSVKSQBA-UHFFFAOYSA-N methane;palladium Chemical compound C.[Pd] UKVIEHSSVKSQBA-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000007039 two-step reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/02—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
- C07D277/20—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D277/32—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D277/56—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims (28)
Priority Applications (1)
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CN201210431202.2A CN103788010B (zh) | 2012-11-01 | 2012-11-01 | 非布索坦中间体及其制备方法 |
Applications Claiming Priority (1)
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CN201210431202.2A CN103788010B (zh) | 2012-11-01 | 2012-11-01 | 非布索坦中间体及其制备方法 |
Publications (2)
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CN103788010A CN103788010A (zh) | 2014-05-14 |
CN103788010B true CN103788010B (zh) | 2015-11-25 |
Family
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106470981B (zh) * | 2014-06-23 | 2019-05-07 | 湘北威尔曼制药股份有限公司 | 2-[3-氰基-4-异丁氧基苯基]-4-甲基噻唑-5-甲酸的新型衍生物、其制备方法和应用 |
CN105218479B (zh) * | 2014-06-23 | 2019-10-25 | 湘北威尔曼制药股份有限公司 | 2-[3-氰基-4-异丁氧基苯基]-4-甲基噻唑-5-甲酸的新型衍生物、其制备方法和应用 |
CN107674040B (zh) * | 2017-10-26 | 2021-02-19 | 天津力生制药股份有限公司 | 一种非布司他杂质转化为非布司他的方法 |
CN110642804A (zh) * | 2019-10-17 | 2020-01-03 | 武汉光谷亚太医药研究院有限公司 | 一种非布司他的某个特定杂质的制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011073617A1 (en) * | 2009-12-14 | 2011-06-23 | Cipla Limited | Processes for the preparation of febuxostat and salts thereof |
WO2011139886A2 (en) * | 2010-04-29 | 2011-11-10 | Dr. Reddy's Laboratories Ltd. | Preparation of febuxostat |
WO2012014117A1 (en) * | 2010-07-30 | 2012-02-02 | Ranbaxy Laboratories Limited | Improved process for the preparation of febuxostat |
-
2012
- 2012-11-01 CN CN201210431202.2A patent/CN103788010B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011073617A1 (en) * | 2009-12-14 | 2011-06-23 | Cipla Limited | Processes for the preparation of febuxostat and salts thereof |
WO2011139886A2 (en) * | 2010-04-29 | 2011-11-10 | Dr. Reddy's Laboratories Ltd. | Preparation of febuxostat |
WO2012014117A1 (en) * | 2010-07-30 | 2012-02-02 | Ranbaxy Laboratories Limited | Improved process for the preparation of febuxostat |
Non-Patent Citations (7)
Title |
---|
段行信.酰胺脱水.《实用精细有机合成手册》.化学工业出版社,2000,第183页. * |
荣国斌.卤代汀与金属的反应.《大学有机化学基础 上册》.华东理工大学出版社,2006,第276-279页. * |
荣国斌等.卤代汀与金属的反应.《大学基础有机化学》.化学工业出版社,2011,第170-172页. * |
荣国斌等.酰胺的脱水.《有机化学精析精练》.华东理工大学出版社,2004,第151页. * |
韩广甸等.格氏反应.《有机制备化学手册 中卷》.石油化学工业出版社,1977,第168-174页. * |
高职高专化学教材编写组.酰胺脱水反应.《有机化学》.高等教育出版社,2001,第265页. * |
鲁崇贤等.酰胺的脱水.《有机化学》.科学出版社,2003,第524页. * |
Also Published As
Publication number | Publication date |
---|---|
CN103788010A (zh) | 2014-05-14 |
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