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【结 构 式】

【分子编号】34166

【品名】1-(2,3-dichlorophenyl)-1-ethanone

【CA登记号】

【 分 子 式 】C8H6Cl2O

【 分 子 量 】189.04044

【元素组成】C 50.83% H 3.2% Cl 37.51% O 8.46%

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:(XII)

The diazotation of 2,3-dichloroaniline (IX) with NaNO2 and HCl gives the corresponding diazonium chloride (X), which by a Sandmeyer reaction with CuCN yields 2,3-dichlorophenyl cyanide (XI). The Grignard reaction of (XI) with methylmagnesium bromide (A) in ether affords 2,3-dichloroacetophenone (XII), which by a Willgerodt reaction with S and morpholine is converted into 2,3-dichlorophenylacetic acid (XIII). The reaction of (XIII) with oxalyl chloride (B) in carbon tetrachloride affords the corresponding acyl chloride (XIV), which is cyclized with ethylene (C) by means of AlCl3 in methylene chloride yielding 7,8-dichloro-2-tetralone (XV). The reaction of (XV) with sodium azide in CHCl3 by means of H2SO4 gives 8,9-dichloro-2-benzazepin-3-one (XVI), which is finally reduced with diborane in THF.

1 Molloy, B.B.; Chlorinated tetrahydro-2-benzazepines, N-methyl transferase inhibitors. CA 1119592 .
2 Serradell, M.N.; Castaner, J.; LY-134046. Drugs Fut 1984, 9, 4, 268.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(B) 29841 Oxalyl chloride; 2-Chloro-2-oxoacetyl chloride 79-37-8 C2Cl2O2 详情 详情
(A) 33623 bromo(methyl)magnesium 75-16-1 CH3BrMg 详情 详情
(IX) 28562 2,3-dichlorophenylamine 608-27-5 C6H5Cl2N 详情 详情
(X) 34165 2,3-dichlorobenzenediazonium chloride C6H3Cl3N2 详情 详情
(XI) 30204 2,3-dichlorobenzonitrile 6574-97-6 C7H3Cl2N 详情 详情
(XII) 34166 1-(2,3-dichlorophenyl)-1-ethanone C8H6Cl2O 详情 详情
(XIII) 34167 2-(2,3-dichlorophenyl)acetic acid C8H6Cl2O2 详情 详情
(XIV) 34168 2-(2,3-dichlorophenyl)acetyl chloride C8H5Cl3O 详情 详情
(XV) 34169 7,8-dichloro-3,4-dihydro-2(1H)-naphthalenone C10H8Cl2O 详情 详情
(XVI) 34170 8,9-dichloro-1,2,4,5-tetrahydro-3H-2-benzazepin-3-one C10H9Cl2NO 详情 详情
(C) 28363 ethylene 9002-88-4 C2H4 详情 详情
Extended Information