• English
  • 简体中文
Login Register
Current Location: Home > Feedback Help Print

【结 构 式】

【分子编号】55777

【品名】2-(7-chloro-5-methyl-4-oxo-3-phenyl-4,5-dihydro-3H-pyridazino[4,5-b]indol-1-yl)acetonitrile

【CA登记号】

【 分 子 式 】C19H13ClN4O

【 分 子 量 】348.79128

【元素组成】C 65.43% H 3.76% Cl 10.16% N 16.06% O 4.59%

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:(IX)

The methylation of 6-chloro-1H-indole-2-carboxylic acid ethyl ester (I) with NaH and Me-I in DMF gives the 1-methylindole derivative (II), which is condensed with 2-chloro-2-oxoacetic acid ethyl ester (III) by means of TiCl4 in dichloroethane to yield 6-chloro-2-[2-(ethoxycarbonyl)-1-methyl-1H-indol-3-yl]-2-oxoacetic acid ethyl ester (IV). The cyclization of (IV) with phenylhydrazine (V) in refluxing acetic acid affords the 7-chloro-5-methyl-4-oxo-3-phenyl-4,5-dihydro-3H-pyridazino[4,5-b]indole-1-carboxylic acid ethyl ester (VI). The reduction of the ester group of (VI) by means of NaBH4 in refluxing THF/methanol affords the hydroxymethyl derivative (VII), which is oxidized with MnO2 in refluxing dichloromethane to provide the corresponding carbaldehyde (VIII). The reaction of (VIII) with p-Toluenesulfonylmethyl isocyanide (TosMIC) and potassium tert-butoxide in dimethoxyethane gives the acetonitrile derivative (IX), which is hydrolyzed with HCl in refluxing methanol to yield the acetate ester derivative (X). Finally, this compound is treated with dimethylamine and trimethylaluminum in toluene to afford the target dimethylacetamide derivative.

1 Bartsch, R.; Sevrin, M.; Froissant, J.; Evanno, Y.; Dubois, L.; Marguet, F.; Gille, C. (Sanofi-Synthélabo); 4-Oxo-3,5-dihydro-4H-pyridazino[4,5-b]-indole-1-acetamide derivs., their preparation and their application in therapy. EP 1000063; FR 2766823; JP 2001512122; US 6262045; WO 9906406 .
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) 55771 ethyl 6-chloro-1H-indole-2-carboxylate C11H10ClNO2 详情 详情
(II) 55772 ethyl 6-chloro-1-methyl-1H-indole-2-carboxylate C12H12ClNO2 详情 详情
(III) 11043 Ethyl 2-chloro-2-oxoacetate; Ethyl oxalyl chloride 4755-77-5 C4H5ClO3 详情 详情
(IV) 55773 ethyl 6-chloro-3-(2-ethoxy-2-oxoacetyl)-1-methyl-1H-indole-2-carboxylate C16H16ClNO5 详情 详情
(V) 11818 Phenyl hydrazine; 1-Phenylhydrazine 100-63-0 C6H8N2 详情 详情
(VI) 55774 ethyl 7-chloro-5-methyl-4-oxo-3-phenyl-4,5-dihydro-3H-pyridazino[4,5-b]indole-1-carboxylate C20H16ClN3O3 详情 详情
(VII) 55775 7-chloro-1-(hydroxymethyl)-5-methyl-3-phenyl-3,5-dihydro-4H-pyridazino[4,5-b]indol-4-one C18H14ClN3O2 详情 详情
(VIII) 55776 7-chloro-5-methyl-4-oxo-3-phenyl-4,5-dihydro-3H-pyridazino[4,5-b]indole-1-carbaldehyde C18H12ClN3O2 详情 详情
(IX) 55777 2-(7-chloro-5-methyl-4-oxo-3-phenyl-4,5-dihydro-3H-pyridazino[4,5-b]indol-1-yl)acetonitrile C19H13ClN4O 详情 详情
(X) 55778 methyl 2-(7-chloro-5-methyl-4-oxo-3-phenyl-4,5-dihydro-3H-pyridazino[4,5-b]indol-1-yl)acetate C20H16ClN3O3 详情 详情
(XI) 19443 N-methylmethanamine; N,N-dimethylamine 124-40-3 C2H7N 详情 详情
Extended Information