CN111960924A - 一种4-丁基间苯二酚的制备方法 - Google Patents
一种4-丁基间苯二酚的制备方法 Download PDFInfo
- Publication number
- CN111960924A CN111960924A CN202010809927.5A CN202010809927A CN111960924A CN 111960924 A CN111960924 A CN 111960924A CN 202010809927 A CN202010809927 A CN 202010809927A CN 111960924 A CN111960924 A CN 111960924A
- Authority
- CN
- China
- Prior art keywords
- organic solvent
- butylresorcinol
- ethyl acetate
- catalyst
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- CSHZYWUPJWVTMQ-UHFFFAOYSA-N 4-n-Butylresorcinol Chemical compound CCCCC1=CC=C(O)C=C1O CSHZYWUPJWVTMQ-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- IUNJCFABHJZSKB-UHFFFAOYSA-N 2,4-dihydroxybenzaldehyde Chemical compound OC1=CC=C(C=O)C(O)=C1 IUNJCFABHJZSKB-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- DMYYTMVFUMDOGC-UHFFFAOYSA-N 2,4-bis(phenylmethoxy)benzaldehyde Chemical compound C1=C(OCC=2C=CC=CC=2)C(C=O)=CC=C1OCC1=CC=CC=C1 DMYYTMVFUMDOGC-UHFFFAOYSA-N 0.000 claims abstract description 19
- -1 benzyl halide Chemical class 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000009467 reduction Effects 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 125000003342 alkenyl group Chemical group 0.000 claims abstract description 4
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Substances C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 87
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 48
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- 239000003208 petroleum Substances 0.000 claims description 24
- 239000003960 organic solvent Substances 0.000 claims description 21
- SECXISVLQFMRJM-UHFFFAOYSA-N NMP Substances CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 15
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 15
- 239000012074 organic phase Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 11
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 239000000706 filtrate Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical group [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-dimethylformamide Substances CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 7
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 7
- 230000004224 protection Effects 0.000 claims description 7
- FVOHFBZRPDHVDV-UHFFFAOYSA-N 1-but-1-enyl-2,4-bis(phenylmethoxy)benzene Chemical compound C(C1=CC=CC=C1)OC1=C(C=CC(=C1)OCC1=CC=CC=C1)C=CCC FVOHFBZRPDHVDV-UHFFFAOYSA-N 0.000 claims description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 claims description 6
- 229940073608 benzyl chloride Drugs 0.000 claims description 6
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 claims description 6
- 229910000024 caesium carbonate Inorganic materials 0.000 claims description 6
- 150000007529 inorganic bases Chemical class 0.000 claims description 6
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 5
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 4
- 239000007868 Raney catalyst Substances 0.000 claims description 4
- 229910000564 Raney nickel Inorganic materials 0.000 claims description 4
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims description 4
- AGEZXYOZHKGVCM-UHFFFAOYSA-N benzyl bromide Chemical compound BrCC1=CC=CC=C1 AGEZXYOZHKGVCM-UHFFFAOYSA-N 0.000 claims description 4
- 238000004440 column chromatography Methods 0.000 claims description 4
- 238000005984 hydrogenation reaction Methods 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- UKVIEHSSVKSQBA-UHFFFAOYSA-N methane;palladium Chemical compound C.[Pd] UKVIEHSSVKSQBA-UHFFFAOYSA-N 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- GSNUFIFRDBKVIE-UHFFFAOYSA-N DMF Natural products CC1=CC=C(C)O1 GSNUFIFRDBKVIE-UHFFFAOYSA-N 0.000 claims description 3
- DSVGQVZAZSZEEX-UHFFFAOYSA-N [C].[Pt] Chemical compound [C].[Pt] DSVGQVZAZSZEEX-UHFFFAOYSA-N 0.000 claims description 3
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000001953 recrystallisation Methods 0.000 claims description 3
- 235000009518 sodium iodide Nutrition 0.000 claims description 3
- CMSYDJVRTHCWFP-UHFFFAOYSA-N triphenylphosphane;hydrobromide Chemical compound Br.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 CMSYDJVRTHCWFP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007239 Wittig reaction Methods 0.000 claims description 2
- 125000003172 aldehyde group Chemical group 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- AVCVDUDESCZFHJ-UHFFFAOYSA-N triphenylphosphane;hydrochloride Chemical compound [Cl-].C1=CC=CC=C1[PH+](C=1C=CC=CC=1)C1=CC=CC=C1 AVCVDUDESCZFHJ-UHFFFAOYSA-N 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims 2
- 238000004090 dissolution Methods 0.000 claims 2
- 238000004809 thin layer chromatography Methods 0.000 claims 2
- AHVYPIQETPWLSZ-UHFFFAOYSA-N N-methyl-pyrrolidine Natural products CN1CC=CC1 AHVYPIQETPWLSZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052786 argon Inorganic materials 0.000 claims 1
- 239000002585 base Substances 0.000 claims 1
- 239000012295 chemical reaction liquid Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 4
- 238000009903 catalytic hydrogenation reaction Methods 0.000 abstract description 4
- 238000005580 one pot reaction Methods 0.000 abstract description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 238000005863 Friedel-Crafts acylation reaction Methods 0.000 abstract description 2
- 239000006227 byproduct Substances 0.000 abstract description 2
- 239000012847 fine chemical Substances 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 239000011592 zinc chloride Substances 0.000 abstract description 2
- 235000005074 zinc chloride Nutrition 0.000 abstract description 2
- 230000002152 alkylating effect Effects 0.000 abstract 1
- 238000005574 benzylation reaction Methods 0.000 abstract 1
- 238000006264 debenzylation reaction Methods 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 12
- 239000000047 product Substances 0.000 description 12
- 238000009987 spinning Methods 0.000 description 7
- XMQSELBBYSAURN-UHFFFAOYSA-M triphenyl(propyl)phosphanium;bromide Chemical compound [Br-].C=1C=CC=CC=1[P+](C=1C=CC=CC=1)(CCC)C1=CC=CC=C1 XMQSELBBYSAURN-UHFFFAOYSA-M 0.000 description 6
- 239000012230 colorless oil Substances 0.000 description 5
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 4
- XUMBMVFBXHLACL-UHFFFAOYSA-N Melanin Chemical compound O=C1C(=O)C(C2=CNC3=C(C(C(=O)C4=C32)=O)C)=C2C4=CNC2=C1C XUMBMVFBXHLACL-UHFFFAOYSA-N 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 4
- 102000003425 Tyrosinase Human genes 0.000 description 3
- 108060008724 Tyrosinase Proteins 0.000 description 3
- 239000012043 crude product Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005727 Friedel-Crafts reaction Methods 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- IWADIQGGJLCBRK-UHFFFAOYSA-N 1-(2,4-Dihydroxyphenyl)-1-butanone Chemical compound CCCC(=O)C1=CC=C(O)C=C1O IWADIQGGJLCBRK-UHFFFAOYSA-N 0.000 description 1
- 238000006214 Clemmensen reduction reaction Methods 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 238000006856 Wolf-Kishner-Huang Minlon reduction reaction Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000006324 decarbonylation Effects 0.000 description 1
- 238000006606 decarbonylation reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000007854 depigmenting agent Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000013595 glycosylation Effects 0.000 description 1
- 238000006206 glycosylation reaction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- BJRNKVDFDLYUGJ-RMPHRYRLSA-N hydroquinone O-beta-D-glucopyranoside Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=C(O)C=C1 BJRNKVDFDLYUGJ-RMPHRYRLSA-N 0.000 description 1
- 210000002510 keratinocyte Anatomy 0.000 description 1
- BEJNERDRQOWKJM-UHFFFAOYSA-N kojic acid Chemical compound OCC1=CC(=O)C(O)=CO1 BEJNERDRQOWKJM-UHFFFAOYSA-N 0.000 description 1
- 229960004705 kojic acid Drugs 0.000 description 1
- WZNJWVWKTVETCG-UHFFFAOYSA-N kojic acid Natural products OC(=O)C(N)CN1C=CC(=O)C(O)=C1 WZNJWVWKTVETCG-UHFFFAOYSA-N 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- HSBZWKNXRISGJR-UHFFFAOYSA-M triphenyl(propyl)phosphanium;chloride Chemical compound [Cl-].C=1C=CC=CC=1[P+](C=1C=CC=CC=1)(CCC)C1=CC=CC=C1 HSBZWKNXRISGJR-UHFFFAOYSA-M 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/01—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
- C07C37/055—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis the substituted group being bound to oxygen, e.g. ether group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/18—Preparation of ethers by reactions not forming ether-oxygen bonds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
本发明属于化学合成、精细化工制造领域,具体公开了一种4‑丁基间苯二酚的制备方法,利用便宜易得的2,4‑二羟基苯甲醛为起始原料,以卤化苄为烷基化试剂,碱性条件下双O‑苄基化制得2,4‑二苄氧基苯甲醛;以三苯基丙基卤化膦为试剂,Wittig烯基化制得2,4‑二苄氧基苯丁烯;金属催化氢化,同时完成烯基还原和脱苄基,一锅制得4‑丁基间苯二酚。本发明方法摒弃了传统方法必须的傅克酰基化反应和还原脱酮反应,规避了过量氯化锌、盐酸等高污染试剂的使用,极大地减少了三废排放;催化剂可重复使用,无副产物,操作简便,适合规模化生产;产量提高,成本降低,完成了4‑丁基间苯二酚的工业生产技术的绿色化升级。
Description
技术领域
本发明属于化学合成、精细化工制造领域,具体涉及一种4-丁基间苯二酚的制备方法。
背景技术
4-丁基间苯二酚(1)是一款高效的皮肤美白剂,通过对高效抑制酪氨酸酶,减少黑色素的形成,干涉酪氨酸酶的合成和糖基化,提高酪氨酸酶的降解、抑制黑色素向角化细胞的转化。其美白效果是β-熊果苷的百倍、曲酸的十倍,也强于氢醌的美白效果。该品种还具有抗氧化、抗紫外线以及渗透快、低致敏性等优点,因此在化妆品市场广受欢迎。其结构式如下:
目前,4-丁基间苯二酚的制备方法较少,适合工业化生产的方法更少。一般以间苯二酚为原料(2),用丁酸对其进行傅克酰基化得到4-丁酰基间苯二酚(3),还原脱羰基得到目标产品,见下式。
第一步傅克反应通常需要过量的丁酸、氯化锌和大量的有机溶剂,且产率较低(J.Am.Chem.Soc.,1921,43,348-360、US1649672、CA272351)。第二步还原酮羰基多采用Clemmensen还原(J.Am.Chem.Soc.,1921,43,348-360、US1649672、CA272351)、黄鸣龙还原(CN103159596)及催化氢化还原(US4419529)。这些方法要么消耗大量的锌粉和盐酸,产生大量的有毒副产物,污染环境;要么涉及高温高压,存在较大的安全隐患;要么催化剂失活,反应不完全,难于大规模生产等,都有一定的局限。由此可见,傅克酰基化-酮羰基还原这条技术路线并存在环境污染大、生产成本高等内在缺陷,不适合工业化放大。
发明内容
本发明方法开发了一条全新的合成4-丁基间苯二酚(1)的技术路线。如式2所示,从商业可得的2,4-二羟基苯甲醛(4)出发,首先将两个羟基用苄基保护得到2,4-二苄氧基苯甲醛(5);随后通过Wittig反应将醛基转换为丁烯基得到中间体2,4-二苄氧基苯基丁烯(7);最后氢化还原将烯基转化为烷基,同时将两个苄基保护基脱除得到产品4-丁基间苯二酚(1)。
本发明采用的具体技术方案为:
(1)以2,4-二羟基苯甲醛(4)和一定量的卤化苄为原料,溶于有机溶剂,加以适当无机碱和催化剂,在惰性气体保护下,在一定温度下反应,TLC监测反应结束。加水萃取,旋干。重结晶得2,4-二苄氧基苯甲醛(5)。
其中,2,4-二羟基苯甲醛、卤化苄、无机碱和催化剂的摩尔比为1:2~4:2~5:0~0.2;
溶解所用的有机溶剂为MeCN、DMF、NMP、DMAC、二氧六环,优选MeCN;
保护采用的惰性气体为氮气;
采用的卤化苄为溴化苄、氯化苄,优选氯化苄;
采用的无机碱为碳酸钠、碳酸钾、碳酸铯,优选碳酸钾;
采用的催化剂为碘化钠、碘化钾,优选碘化钾;
反应温度为50℃~150℃,优选80℃~100℃;
萃取所用有机溶剂为乙酸乙酯;
重结晶所用溶剂体系为二氯甲烷与石油醚、乙酸乙酯与石油醚等,优选乙酸乙酯与石油醚,乙酸乙酯:石油醚体积比为=1:5~100。
(2)2,4-二苄氧基苯甲醛(5)溶于有机溶剂,加入一定量的丙基三苯基卤化膦(6)和碱,在惰性气体保护下,在一定温度下反应,TLC检测反应结束。过滤,滤液中加入一定量的水,萃取,有机相旋干。用有机溶剂过柱,得2,4-二苄氧基苯基丁烯(7)。
其中,2,4-二苄氧基苯甲醛、碱、Wittig试剂丙基三苯基卤化膦的摩尔比为1:1~5:1~3;
溶解所用有机溶剂为DMF、NMP、DMAC、EG、二氧六环,优选NMP;
三苯基丙基卤化膦为三苯基丙基氯化膦或三苯基丙基溴化磷,优选三苯基丙基溴化磷;
保护采用的惰性气体为氮气;
采用的碱为碳酸钠、碳酸钾、碳酸铯、叔丁醇钾等,优选碳酸钾;
反应温度为100℃~200℃,优选120℃~180℃;
萃取所用有机溶剂为乙酸乙酯;
过柱所用有机溶剂为乙酸乙酯与石油醚1:5~100;
(3)将2,4-二苄氧基苯基丁烯(7)溶于有机溶剂,加入催化剂,一定温度下加压氢化反应,反应结束后,过滤除去催化剂,旋干反应液,得4-丁基间苯二酚(1)。
其中,所用有机溶剂为乙酸乙酯、甲醇、乙醇、异丙醇,优先乙酸乙酯;
所用催化剂为钯炭、雷尼镍或铂炭,优选钯碳;所用催化剂量为底物质量的1%至30%,优选5%至20%;
反应温度为30℃~120℃,优选40℃~100℃;
反应压力为0.3~5.0MPa,优选0.5~1.5MPa。
本发明方法相较于现有文献所报道的技术方案具有如下创新点:1)采用了新的合成路线,即羟基保护、烯基化、催化氢化三步法;2)将醛转化为烯基再还原规避了直接还原去羰基的难点,也因此避免了必须使用的酸、还原金属、肼、汞等环境不友好的试剂和条件;3)使用苄基保护两个酚羟基,减少了后续步骤的副反应;4)烯烃和苄基是一锅法催化氢化实现的,使用清洁绿色的氢气和少量金属催化剂。
附图说明
图1为2,4-二苄氧基苯丁烯的1H NMR核磁谱图;
图2为4-丁基间苯二酚的1H NMR核磁谱图。
具体实施方式
下面结合实施例对本发明做进一步描述,但不限于此。
实施例1
2,4-二苄氧基苯甲醛的制备
将5g 2,4-二羟基苯甲醛(36mmol)、100mL乙腈、12.5g无水碳酸钾(90mmol)、10.75mL溴化苄(90mmol)置于250mL圆底烧瓶中,放入预热好的95℃油浴中,反应5h,冷却至室温,过滤,有机相用水萃取后,旋干,粗品用体积比为1:100的乙酸乙酯与石油醚重结晶,得10.87g白色固体,收率95%。
实施例2
2,4-二苄氧基苯甲醛的制备
将5g 2,4-二羟基苯甲醛(36mmol)、100mL氮甲基吡咯烷酮(NMP)、29.3g无水碳酸铯(90mmol)、17.2mL溴化苄(144mmol)、1.2g碘化钾(7.2mmol)置于250mL圆底烧瓶中,放入预热好的50℃油浴中,反应10h,冷却至室温,过滤,有机相用水萃取后,旋干,粗品用体积比为1:5的乙酸乙酯与石油醚重结晶,得8.6g白色固体,收率74%。
实施例3
2,4-二苄氧基苯甲醛的制备
将5g 2,4-二羟基苯甲醛(36mmol)、100mL乙腈、12.5g无水碳酸钾(90mmol)、12.51mL氯化苄(90mmol)、540mg碘化钠(3.6mmol)置于250mL圆底烧瓶中,放入预热好的95℃油浴中,反应5h,冷却至室温,过滤,有机相用水萃取后,旋干,粗品用体积比为1:20的乙酸乙酯与石油醚重结晶,得10.65g白色固体,收率93%。
实施例4
2,4-二苄氧基苯丁烯的制备
将实施例1所得2,4-二苄氧基苯甲醛500mg(1.6mmol)加入10mL圆底烧瓶中,加入1.5mL二氧六环、907mg丙基三苯基溴化膦(2.36mmol)、434mg碳酸钾(3.14mmol),抽空换氮,浸入预热好的100℃油浴中反应10h,用乙酸乙酯过滤,滤液中加入10mL水,萃取,有机相旋干。石油醚:乙酸乙酯8:1过柱,旋干,得无色油状物200mg,收率37%。
实施例5
2,4-二苄氧基苯丁烯的制备
将实施例1所得2,4-二苄氧基苯甲醛500mg(1.6mmol)加入10mL圆底烧瓶中,加入1.5mL DMF、907mg丙基三苯基溴化膦(2.36mmol)、434mg碳酸钾(3.14mmol),抽空换氮,浸入预热好的150℃油浴中反应5h,用乙酸乙酯过滤,滤液中加入10mL水,萃取,有机相旋干。石油醚:乙酸乙酯8:1过柱,旋干,得无色油状物506mg,收率92%。
实施例6
2,4-二苄氧基苯丁烯的制备
将实施例2所得2,4-二苄氧基苯甲醛2g(6.28mmol)加入50mL圆底烧瓶中,加入6mLDMF、3.63g丙基三苯基溴化膦(9.42mmol)、1.74g碳酸钾(12.56mmol),抽空换氮,浸入预热好的150℃油浴中反应5h,用乙酸乙酯过滤,滤液中加入60mL水,萃取,有机相旋干。石油醚:乙酸乙酯8:1过柱,旋干,得无色油状物2.05g,收率93%。
实施例7
2,4-二苄氧基苯丁烯的制备
将实施例2所得2,4-二苄氧基苯甲醛2g(6.28mmol)加入50mL圆底烧瓶中,加入6mLDMAC、6.4g丙基三苯基氯化膦(18.84mmol)、3.52g叔丁醇钾(31.4mmol),抽空换氮,浸入预热好的180℃油浴中反应5h,用乙酸乙酯过滤,滤液中加入60mL水,萃取,有机相旋干。石油醚:乙酸乙酯8:1过柱,旋干,得无色油状物1.92g,收率87%。
实施例8
2,4-二苄氧基苯丁烯的制备
将实施例2所得2,4-二苄氧基苯甲醛500mg(1.6mmol)加入10mL圆底烧瓶中,加入1.5mL NMP、620mg丙基三苯基溴化膦(1.6mmol)、1020mg碳酸铯(3.14mmol),抽空换氮,浸入预热好的150℃油浴中反应5h,用乙酸乙酯过滤,滤液中加入10mL水,萃取,有机相旋干。石油醚:乙酸乙酯8:1过柱,旋干,得无色油状物490mg,收率89%。
实施例9
2,4-二苄氧基苯丁烯的制备(一锅法)
将2,4-二羟基苯甲醛200mg(1.45mmol)、3mL NMP、500mg无水碳酸钾(3.62mmol)、384.91mg氯化苄(3.04mmol)置于10mL圆底烧瓶中,抽空换氮,放入预热好的95℃油浴中,反应5h,冷却至室温,加入826.83mg丙基三苯基溴化膦(2.17mmol)、400mg碳酸钾(2.90mmol),抽空换氮,浸入预热好的150℃油浴中反应5h,用石油醚过滤,滤液中加入30mL水,石油醚萃取,有机相旋干。溶于石油醚,加入硅胶、与活性炭,脱色,过滤,旋干有机相,得无色油状产品424mg,收率85%。
实施例10
2,4-二苄氧基苯丁烯的制备(一锅法)
将2,4-二羟基苯甲醛2g(14.5mmol)、20mL NMP、5g无水碳酸钾(36.2mmol)、3.5mL氯化苄(30.4mmol)置于50mL圆底烧瓶中,抽空换氮,放入预热好的95℃油浴中,反应5h,冷却至室温,加入8.37g丙基三苯基溴化膦(21.7mmol)、4g碳酸钾(29.0mmol),抽空换氮,浸入预热好的150℃油浴中反应5h,用石油醚过滤,滤液中加入200mL水,石油醚萃取,有机相旋干。溶于石油醚,加入硅胶、与活性炭,脱色,过滤,旋干有机相,得无色油状物4.34g,收率87%。
实施例11
4-丁基间苯二酚的制备
将实施例5所得2,4-二苄氧基苯丁烯500mg(14.5mmol)加入到高压釜中,加入10mL乙酸乙酯,加入50mg钯炭(10%w/w),调节压力至1.1MPa,加热至65℃,反应5h,过滤,旋干溶剂,得到产品229mg,收率95%。
实施例12
4-丁基间苯二酚的制备
将实施例5所得2,4-二苄氧基苯丁烯500mg(14.5mmol)加入到高压釜中,加入10mL异丙醇,加入5mg钯炭(10%w/w),调节压力至1.1MPa,加热至120℃,反应10h,过滤,旋干溶剂,得到产品236mg,收率98%。
实施例13
4-丁基间苯二酚的制备
将实施例5所得2,4-二苄氧基苯丁烯500mg(14.5mmol)加入到高压釜中,加入10mL异丙醇,加入100mg雷尼镍,调节压力至2.5MPa,加热至80℃,反应10h,过滤,旋干溶剂,得到产品232mg,收率96%。
实施例14
4-丁基间苯二酚的制备
将实施例5所得2,4-二苄氧基苯丁烯500mg(14.5mmol)加入到高压釜中,加入10mL乙醇,加入150mg雷尼镍,调节压力至0.3MPa,加热至120℃,反应10h,过滤,旋干溶剂,得到产品216mg,收率90%。
实施例15
4-丁基间苯二酚的制备
将实施例5所得2,4-二苄氧基苯丁烯500mg(14.5mmol)加入到高压釜中,加入10mL甲醇,加入10mg铂炭(10%w/w),调节压力至5.0MPa,加热至30℃,反应10h,过滤,旋干溶剂,得到产品226mg,收率94%。
所述实施例为本发明的优选的实施方式,但本发明并不限于上述实施方式,在不背离本发明的实质内容的情况下,本领域技术人员能够做出的任何显而易见的改进、替换或变型均属于本发明的保护范围。
Claims (10)
1.一种4-丁基间苯二酚的制备方法,其特征在于,所述方法为:以2,4-二羟基苯甲醛为原料,首先将两个羟基用苄基保护得到2,4-二苄氧基苯甲醛;随后通过Wittig反应将醛基转化为丁烯基得到中间体2,4-二苄氧基苯基丁烯;最后氢化还原将烯基转化为烷基,同时将两个苄基保护基脱除得到4-丁基间苯二酚。
2.根据权利要求1所述的4-丁基间苯二酚的制备方法,其特征在于,所述制备方法具体步骤如下:
①将2,4-二羟基苯甲醛和卤化苄溶于有机溶剂中,并加入无机碱和催化剂,在惰性气体保护下进行反应,TLC监测反应结束,加水萃取,旋干,重结晶得2,4-二苄氧基苯甲醛;
②2,4-二苄氧基苯甲醛溶于有机溶剂,加入三苯基丙基卤化膦和碱,在惰性气体保护下,进行反应,TLC检测反应结束,过滤,滤液中加入水,萃取,有机相旋干,用有机溶剂过柱,得2,4-二苄氧基苯基丁烯;
③2,4-二苄氧基苯基丁烯溶于有机溶剂,加入催化剂,加压氢化反应,反应结束后,过滤除去催化剂,旋干反应液得4-丁基间苯二酚。
3.根据权利要求1所述的4-丁基间苯二酚的制备方法,其特征在于,步骤①中2,4-二羟基苯甲醛、卤化苄、无机碱和催化剂的摩尔比为1:2~4:2~5:0-0.2。
4.根据权利要求1所述的4-丁基间苯二酚的制备方法,其特征在于,步骤①中卤化苄为溴化苄、氯化苄;无机碱为碳酸钠、碳酸钾、碳酸铯;惰性气体为氮气;催化剂为碘化钠、碘化钾;反应温度为50℃~150℃。
5.根据权利要求1所述的4-丁基间苯二酚的制备方法,其特征在于,步骤①中溶解用有机溶剂为MeCN、DMF、NMP、DMAC;萃取用有机溶剂为乙酸乙酯;重结晶用溶剂体系为二氯甲烷与石油醚或乙酸乙酯与石油醚。
6.根据权利要求5所述的4-丁基间苯二酚的制备方法,其特征在于,步骤①中重结晶所用溶剂体系为乙酸乙酯与石油醚,乙酸乙酯与石油醚的体积比为1:5~100。
7.根据权利要求1所述的4-丁基间苯二酚的制备方法,其特征在于,步骤②中2,4-二苄氧基苯甲醛、碱、三苯基丙基卤化膦的摩尔比为1:1~5:1~3。
8.根据权利要求1所述的4-丁基间苯二酚的制备方法,其特征在于,步骤②中三苯基丙基卤化膦为三苯基丙基氯化膦或三苯基丙基溴化磷;惰性气体为氮气、氩气;碱为碳酸钠、碳酸钾、碳酸铯、叔丁醇钾;反应温度为100℃~200℃。
9.根据权利要求1所述的4-丁基间苯二酚的制备方法,其特征在于,步骤②中溶解用有机溶剂为DMF、NMP、DMAC、乙二醇、二氧六环;萃取用有机溶剂为乙酸乙酯;过柱柱高为5cm~20cm;过柱用有机溶剂为体积比为0~1:5~100的乙酸乙酯与石油醚。
10.根据权利要求1所述的4-丁基间苯二酚的制备方法,其特征在于,步骤③中催化剂为钯炭、雷尼镍、铂炭;催化剂用量为底物质量的1%至30%;有机溶剂为乙酸乙酯、甲醇、乙醇、异丙醇;反应温度为30℃~120℃;反应压力为0.3~5.0MPa。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010809927.5A CN111960924B (zh) | 2020-08-13 | 2020-08-13 | 一种4-丁基间苯二酚的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010809927.5A CN111960924B (zh) | 2020-08-13 | 2020-08-13 | 一种4-丁基间苯二酚的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111960924A true CN111960924A (zh) | 2020-11-20 |
CN111960924B CN111960924B (zh) | 2023-01-17 |
Family
ID=73365999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010809927.5A Active CN111960924B (zh) | 2020-08-13 | 2020-08-13 | 一种4-丁基间苯二酚的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111960924B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113893197A (zh) * | 2021-10-29 | 2022-01-07 | 湖北省麦诗特生物科技有限公司 | 一种肌肤美白、抗糖化可溶美容微针贴膜组合物及其制备方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010132593A (ja) * | 2008-12-04 | 2010-06-17 | Shiseido Co Ltd | 4−アルキルレゾルシノールの製造方法 |
JP2011231058A (ja) * | 2010-04-28 | 2011-11-17 | Kao Corp | セラミド産生促進剤 |
JP2013213024A (ja) * | 2012-03-04 | 2013-10-17 | Utsunomiya Univ | ロドデンドロール誘導体 |
CN107805186A (zh) * | 2017-10-27 | 2018-03-16 | 南京斯拜科生化实业有限公司 | 一种4‑烷基间苯二酚的制备方法 |
CN110803980A (zh) * | 2019-11-25 | 2020-02-18 | 重庆东寰科技开发有限公司 | 一锅法制备4-正丁基间苯二酚的方法 |
CN110903169A (zh) * | 2019-12-19 | 2020-03-24 | 辽宁东科药业有限公司 | 一种制备4-丁基间苯二酚的方法 |
CN111132965A (zh) * | 2017-09-29 | 2020-05-08 | 莱雅公司 | 针对其美容用途的间苯二酚衍生物 |
-
2020
- 2020-08-13 CN CN202010809927.5A patent/CN111960924B/zh active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010132593A (ja) * | 2008-12-04 | 2010-06-17 | Shiseido Co Ltd | 4−アルキルレゾルシノールの製造方法 |
JP2011231058A (ja) * | 2010-04-28 | 2011-11-17 | Kao Corp | セラミド産生促進剤 |
JP2013213024A (ja) * | 2012-03-04 | 2013-10-17 | Utsunomiya Univ | ロドデンドロール誘導体 |
CN111132965A (zh) * | 2017-09-29 | 2020-05-08 | 莱雅公司 | 针对其美容用途的间苯二酚衍生物 |
CN107805186A (zh) * | 2017-10-27 | 2018-03-16 | 南京斯拜科生化实业有限公司 | 一种4‑烷基间苯二酚的制备方法 |
CN110803980A (zh) * | 2019-11-25 | 2020-02-18 | 重庆东寰科技开发有限公司 | 一锅法制备4-正丁基间苯二酚的方法 |
CN110903169A (zh) * | 2019-12-19 | 2020-03-24 | 辽宁东科药业有限公司 | 一种制备4-丁基间苯二酚的方法 |
Non-Patent Citations (1)
Title |
---|
YU WANLEI等: "Alkene functionalization for the stereospecific synthesis of substituted aziridines by visible-light photoredox catalysis", 《CHEMICAL COMMUNICATIONS (CAMBRIDGE, UNITED KINGDOM)》 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113893197A (zh) * | 2021-10-29 | 2022-01-07 | 湖北省麦诗特生物科技有限公司 | 一种肌肤美白、抗糖化可溶美容微针贴膜组合物及其制备方法 |
CN113893197B (zh) * | 2021-10-29 | 2024-01-30 | 湖北省麦诗特生物科技有限公司 | 一种肌肤美白、抗糖化可溶美容微针贴膜组合物及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN111960924B (zh) | 2023-01-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2658652C (en) | Novel process for the synthesis of (e)-stilbene derivatives which makes it possible to obtain resveratrol and piceatannol | |
CN111960924B (zh) | 一种4-丁基间苯二酚的制备方法 | |
CN111233617A (zh) | 一种1-碘代炔烃类化合物的合成方法 | |
US10815178B2 (en) | Intermolecular reaction of propargyl ethers with dimethylfuran in the presence of gold(I) complexes | |
CN110526806B (zh) | 一种固体酸催化苯乙炔制备苯乙酮类化合物的方法 | |
CA2998278A1 (en) | Process for preparing 1-(4-methanesulfonyl-2-trifluoromethyl-benzyl)-2-methyl-1h-pyrrolo [2,3-b]pyridin-3-yl-acetic acid | |
CN110937985A (zh) | 一种姜酮酚的合成方法 | |
Liu et al. | Cobalt/Lewis acid cooperative catalysis for reductive etherification of ketones and aldehydes with alcohols | |
CN114085145B (zh) | 一种r-(+)-2-(4-羟基苯氧基)丙酸甲酯的制备方法 | |
CN114057723B (zh) | 一种13-甲基小檗碱类生物碱的合成方法 | |
CN109824520B (zh) | 一种顺式-4-甲基环已胺的制备方法 | |
CN114835645A (zh) | 一种6-氯-2-甲基-2h-吲唑-5-胺的制备方法 | |
CN108727323B (zh) | 一种氮杂环卡宾催化合成三氟甲基取代高异黄酮类化合物的方法 | |
CN110078651B (zh) | 一种多取代3,3’-联吡咯化合物的制备方法 | |
CN110724098A (zh) | 一种5,7-二氯-1,2,3,4-四氢异喹啉-6-羧酸盐酸盐的合成方法 | |
CN115368271B (zh) | 一种溴代芳烃与醇反应合成烷基芳基醚的方法 | |
CN115784908B (zh) | 一种间二烷胺基苯酚的合成方法 | |
CN114933528B (zh) | 一种制备芳酰氧基烷基碘化物及其转化应用方法的新方法 | |
CN115315231B (zh) | 制备地莫匹醇及其盐的方法 | |
US20090012314A1 (en) | Process for Production of Lasofoxifene or Analogue Thereof | |
CN114516796B (zh) | 一种制备5-氧代己酸酯的方法 | |
CN112939920B (zh) | 一种龙血竭红素a或龙血竭红素b的制备方法 | |
CN110003275B (zh) | 一种4,6-二(二苯基膦)吩嗪化合物的合成方法 | |
CN114702408B (zh) | 一种克立硼罗杂质的制备方法和应用 | |
CN116874360B (zh) | 一种布帕伐醌的合成方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20240425 Address after: Unit A601, No. 199, Tianfu 3rd Street, Chengdu Hi tech Zone, China (Sichuan) Pilot Free Trade Zone, Chengdu 610000, Sichuan Patentee after: Chengdu Rongchuang Yiheng Biomedical Technology Co.,Ltd. Country or region after: China Address before: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1 Patentee before: CHANGZHOU University Country or region before: China |
|
TR01 | Transfer of patent right |