Chemistry of Heterocyclic Compounds p. 48 - 52 (1987)
Update date:2022-08-04
Topics:
Anisimova, V. A.
Levchenko, M. V.
The possibility of annelation of the imidazoline ring on the basis of 2(2-hydroxyethylamino)-benzimidazoles was studied.It was shown that the action of hydrobromic, sulfuric, nitrosylsulfuric, and polyphosphoric acids, acetic anhydride, and phosphorus oxychloride on them does not lead to 2,3-dihydroimidazo<1,2-a>-benzimidazoles.In the case of POCl3 the products were 2-(2-chloroethylamino)benzimidazoles, treatment of which with alcoholic alkali led primarily to nucleophilic substitution of the chlorine atom by a methoxy group.Three-ring imidazolines are formed in 12-15percent yields in this case.It was established that the reaction proceeds through the intermediate formation of aziridine derivatives.
View MoreShanghai ShengShan chemical technology co., LTD
Contact:86-0-18964748206
Address:95,East century street,Jinshan,Shanghai,China
Contact:0572-2722882
Address:1201,F3,xinghuibandao,
shanghai Tauto Biotech Co., Ltd
website:http://www.tautobiotech.com/en/index.htm
Contact:+86-21-51320588 ext. 8025
Address:No. 326, Aidisheng Rd , Zhangjiang Hi-tech Park, Shanghai , P.R.CHINA
Zhonghao (dalian) Research and Design Institute of Chemical Industry Co., Ltd
Contact:+86 411 84674606
Address:201, Huangpu Road , Shahekou District, Dalian ,116023-China
qingdao goldenchem imp and exp co.,ltd.
Contact:532-55579246
Address:no.62 ,haier road laoshan distirct
Doi:10.1016/S0040-4020(01)00354-4
(2001)Doi:10.1016/S0040-4020(01)90014-6
(1987)Doi:10.1007/BF00816413
(1993)Doi:10.1021/jo01079a604
(1960)Doi:10.1016/S0040-4039(00)96103-3
(1987)Doi:10.1021/jo00899a012
(1975)
