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【结 构 式】

【分子编号】28348

【品名】methyl 2-bromo-3-(3-cyanophenyl)-3-oxopropanoate

【CA登记号】

【 分 子 式 】C11H8BrNO3

【 分 子 量 】282.09346

【元素组成】C 46.84% H 2.86% Br 28.33% N 4.97% O 17.01%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(V)

The reaction of 3-formylbenzonitrile (I) with methyl 2-bromoacetate (II) by means of activated Zn in hot THF gives 3-(3-cyanophenyl)-3-hydroxypropionic acid methyl ester (III), which is oxidized with activated MnO2 in hot dichloromethane yielding the oxoester (IV). The bromination of (IV) with NBS in CCl4 affords the alpha bromo derivative (V), which is cyclized with thioacetamide (VI) in hot THF affording 4-(3-cyanophenyl)-2-methylthiazole-5-carboxylic acid methyl ester (VII). The condensation of (VII) with 4'-amino-N-tert-butylbiphenyl-2-sulfonamide (VIII) by means of trimethylaluminum in toluene/dichloromethane gives the corresponding amide (IX), which is treated with hot TFA to eliminate the ter-butyl protecting group yielding intermediate (X). Finally, the cyano group of (X) is treated first with anhydrous HCl in methanol, and finally with ammonium carbonate in the same solvent to obtain the target amidine.

1 Quan, M.L.; Pinto, D.J.P.; Fevig, J.M.; Pruitt, J.R. (DuPont Pharmaceuticals Co.); Oxygen or sulfur containing heteroaromatics as fac. WO 9828282 .
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) 13245 3-Formylbenzonitrile; 3-Cyanobenzaldehyde 24964-64-5 C8H5NO 详情 详情
(II) 12309 methyl 2-bromoacetate; methyl bromoacetate 96-32-2 C3H5BrO2 详情 详情
(III) 28346 methyl 3-(3-cyanophenyl)-3-hydroxypropanoate C11H11NO3 详情 详情
(IV) 28347 methyl 3-(3-cyanophenyl)-3-oxopropanoate C11H9NO3 详情 详情
(V) 28348 methyl 2-bromo-3-(3-cyanophenyl)-3-oxopropanoate C11H8BrNO3 详情 详情
(VI) 19170 ethanethioamide 62-55-5 C2H5NS 详情 详情
(VII) 28349 methyl 4-(3-cyanophenyl)-2-methyl-1,3-thiazole-5-carboxylate C13H10N2O2S 详情 详情
(VIII) 23363 4'-amino-N-(tert-butyl)[1,1'-biphenyl]-2-sulfonamide C16H20N2O2S 详情 详情
(IX) 28350 N-[2'-[(tert-butylamino)sulfonyl][1,1'-biphenyl]-4-yl]-4-(3-cyanophenyl)-2-methyl-1,3-thiazole-5-carboxamide C28H26N4O3S2 详情 详情
(X) 28351 N-[2'-(aminosulfonyl)[1,1'-biphenyl]-4-yl]-4-(3-cyanophenyl)-2-methyl-1,3-thiazole-5-carboxamide C24H18N4O3S2 详情 详情
Extended Information