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【结 构 式】

【分子编号】12256

【品名】2,4,5-Trifluoro-3-methoxybenzonitrile

【CA登记号】

【 分 子 式 】C8H4F3NO

【 分 子 量 】187.1211096

【元素组成】C 51.35% H 2.15% F 30.46% N 7.49% O 8.55%

与该中间体有关的原料药合成路线共 3 条

合成路线1

该中间体在本合成路线中的序号:(II)

The reaction of 1-bromo-2,4,5-trifluoro-3-methoxybenzene (I) with CuCN and N-methyl-2-pyrrolidone at 150 C gives 2,4,5-trifluoro-3-methoxybenzonitrile (II), which by treatment with concentrated H2SO4 yields the benzamide (III). The hydrolysis of (III) with H2SO4 - water at 110 C affords 2,4,5-trifluoro-2-methoxybenzoic acid (IV), which by reaction with SOCl2 is converted into the acyl chloride (V). The condensation of (V) with diethyl malonate by means of magnesium ethoxide in toluene affords diethyl 2-(2,4,5-trifluoro-3-methoxybenzoyl)malonate (VI), which by treatment with p-toluenesulfonic acid in refluxing water gives ethyl 2-(2,4,5-trifluoro-3-methoxybenzoyl)acetate (VII). The condensation of (VII) with triethyl orthoformate in refluxing acetic anhydride yields 3-ethoxy-2-(2,4,5-trifluoro-3-methoxybenzoyl)acrylic acid ethyl ester (VIII), which is treated with cyclopropylamine (IX) to afford the corresponding cyclopropylamino derivative (X). The cyclization of (X) by means of NaF in refluxing DMF gives 1-cyclopropyl-6,7-difluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid ethyl ester (XI), which is hydrolyzed with H2SO4 in acetic acid to yield the corresponding free acid (XII). Finally, this compound is condensed with 2-methylpiperazine (XIII) in hot DMSO.

1 Masuzawa, K.; Suzue, S.; Hirai, K.; Ishizaki, T. (Kyorin Pharmaceutical Co., Ltd.); 8-Alkyoxyquinolonecarboxylic acid and salts thereof excellent in the selective toxicity and process for preparing the same. EP 0230295; JP 1987252772; JP 1994080640; JP 1994092937; JP 1995304706; JP 1995304742; US 4980470 .
2 Prous, J.; Castaner, J.; AM-1155. Drugs Fut 1993, 18, 3, 203.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 12255 3-Bromo-2,5,6-trifluorophenyl methyl ether; 1-Bromo-2,4,5-trifluoro-3-methoxybenzene C7H4BrF3O 详情 详情
(II) 12256 2,4,5-Trifluoro-3-methoxybenzonitrile C8H4F3NO 详情 详情
(III) 12257 2,4,5-Trifluoro-3-methoxybenzamide C8H6F3NO2 详情 详情
(IV) 12258 2,4,5-Trifluoro-3-methoxybenzoic acid 112811-65-1 C8H5F3O3 详情 详情
(V) 12259 2,4,5-Trifluoro-3-methoxybenzoyl chloride C8H4ClF3O2 详情 详情
(VI) 12260 diethyl 2-(2,4,5-trifluoro-3-methoxybenzoyl)malonate C15H15F3O6 详情 详情
(VII) 12261 ethyl 3-oxo-3-(2,4,5-trifluoro-3-methoxyphenyl)propanoate C12H11F3O4 详情 详情
(VIII) 12262 ethyl (Z)-3-ethoxy-2-(2,4,5-trifluoro-3-methoxybenzoyl)-2-propenoate C15H15F3O5 详情 详情
(IX) 12263 Cyclopropylamine; Cyclopropanamine 765-30-0 C3H7N 详情 详情
(X) 12264 ethyl (E)-3-(cyclopropylamino)-2-(2,4,5-trifluoro-3-methoxybenzoyl)-2-propenoate C16H16F3NO4 详情 详情
(XI) 12265 ethyl 1-cyclopropyl-6,7-difluoro-8-methoxy-4-oxo-1,4-dihydro-3-quinolinecarboxylate C16H15F2NO4 详情 详情
(XII) 12266 1-Cyclopropyl-6,7-difluoro-8-methoxy-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid 112811-72-0 C14H11F2NO4 详情 详情
(XIII) 12267 2-Methylpiperazine 109-07-9 C5H12N2 详情 详情

合成路线2

该中间体在本合成路线中的序号:(VII)

3(S)-(Allyloxycarbonylamino)-1-chloro-5-phenyl-2-pentanone (VI) is linked to a carbazate resin (VII) to yield the resin-supported compound (VIII) suitable for solid-phase synthesis. The condensation of (VIII) with 3-phenylpropylmercaptan (IX) by means of DIEA in DMF affords the adduct (X), which is deprotected at the allyloxycarbonylamino group by means of Pd(PPh3)4 to provide the amino resin (XI). The condensation of (XI) with the previously described intermediate (V) by means of PyBOP, HOAt and DIEA in DMF gives dipeptide resin (XII). Finally, the cleavage of the target compound from the resin (XII) is performed by means of TFA in trifluoroethanol/water.

1 Ellman, J.A.; Lee, A.; Huang, L. ; Identification of potent and selective mechanism-based inhibitors of the cysteine protease cruzain using solid-phase parallel synthesis. J Med Chem 2002, 45, 3, 676.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(V) 54423 (2S)-4-methyl-2-{[(3-pyridinylmethoxy)carbonyl]amino}pentanoic acid C13H18N2O4 详情 详情
(VI) 54424 allyl (1S)-3-chloro-2-oxo-1-phenethylpropylcarbamate C15H18ClNO3 详情 详情
(VII) 12256 2,4,5-Trifluoro-3-methoxybenzonitrile C8H4F3NO 详情 详情
(VIII) 54425 methyl 2-[(E,2S)-2-{[(allyloxy)carbonyl]amino}-1-(chloromethyl)-4-phenylbutylidene]-1-hydrazinecarboxylate C17H22ClN3O4 详情 详情
(IX) 54426 3-Phenylpropyl mercaptan; 3-Phenyl-1-propanethiol 24734-68-7 C9H12S 详情 详情
(X) 54427 methyl 2-((E,2S)-2-{[(allyloxy)carbonyl]amino}-4-phenyl-1-{[(3-phenylpropyl)sulfanyl]methyl}butylidene)-1-hydrazinecarboxylate C26H33N3O4S 详情 详情
(XI) 54428 methyl 2-((E,2S)-2-amino-4-phenyl-1-{[(3-phenylpropyl)sulfanyl]methyl}butylidene)-1-hydrazinecarboxylate C22H29N3O2S 详情 详情
(XII) 54429 methyl (E,5S,8S)-8-isobutyl-7,10-dioxo-5-phenethyl-4-{[(3-phenylpropyl)sulfanyl]methyl}-12-(3-pyridinyl)-11-oxa-2,3,6,9-tetraaza-3-dodecen-1-oate C35H45N5O5S 详情 详情

合成路线3

该中间体在本合成路线中的序号:(II)

 

1 Masuzawa K. 1987.8-Alkoxyquinolone carboxlic acids and salts there of excellent in the selective toxicity and process of preparing the same. EP 0230259(本专利为Kyorin Pharmaceutical Co Ltd所有)
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 12255 3-Bromo-2,5,6-trifluorophenyl methyl ether; 1-Bromo-2,4,5-trifluoro-3-methoxybenzene C7H4BrF3O 详情 详情
(II) 12256 2,4,5-Trifluoro-3-methoxybenzonitrile C8H4F3NO 详情 详情
(III) 12257 2,4,5-Trifluoro-3-methoxybenzamide C8H6F3NO2 详情 详情
(IV) 12258 2,4,5-Trifluoro-3-methoxybenzoic acid 112811-65-1 C8H5F3O3 详情 详情
(V) 12259 2,4,5-Trifluoro-3-methoxybenzoyl chloride C8H4ClF3O2 详情 详情
(VI) 12260 diethyl 2-(2,4,5-trifluoro-3-methoxybenzoyl)malonate C15H15F3O6 详情 详情
(VII) 12261 ethyl 3-oxo-3-(2,4,5-trifluoro-3-methoxyphenyl)propanoate C12H11F3O4 详情 详情
Extended Information