Journal of the Chemical Society. Perkin transactions I p. 1424 - 1432 (1981)
Update date:2022-08-04
Topics:
Baig, Ghouse Unissa
Stevens, Malcolm F. G.
5-Diazoimidazole-4-carboxamide couples with reactive methylenic substrates to afford a series of imidazolylhydrazones which cyclise in acid or alkali to imidazo<5,1-c><1,2,4>triazines.Hydrazones with cyano-substituents cyclise in acid to yield 7-aminoimidazotriazines whereas hydrazones with acetyl groups undergo acidic dehydration to form bicycles with a 7-methylene substituent.In basic conditions, hydrazones with a reactive ester group cyclise to imidazotriazin-7(4H)-ones with loss of an alcohol moiety.Ethyl 7-amino-3-carbamoylimidazo<5,1-c><1,2,4>triazine-6-carboxylate hydrolyses in boiling 2N-hydrochloric acid, forms an N-acetyl derivative, and reacts with secondary heteroalicyclic amines to form amides.
View MoreLIAONING DMSO CHEMICALS CO.,LTD.
website:http://www.chinadmso.com
Contact:+86-427-6503033
Address:FLOOR 16, BLOCK A, FINANCIAL SQUARE, XINGLONGTAI DISTRICT, PANJIN CITY, LIAONING P.R. CHINA
Contact:18710867521(wechat)
Address:Rm10516,Galaxy Tech Building #2,No.25 Tangyan Rd,Hi-Tech Zone,Xi'an, China
SHENZHEN PENGCHENG REDSTAR INDUSTRY CO.,LTD
Contact:+86-755-82412922
Address:Room 8066, East Block, Square City, Jiabin Road, Luohu District
ZiBO KuoDing Trade company Ltd
website:http://www.sdzbkd.com
Contact:86-13361591822
Address:GongQingTuan road
Shijiazhuang Yunxuan Im&Export Co.,Ltd.
Contact:+86-311-83037514
Address:No.6 Hongbin Road
Doi:10.1039/c7nj04534d
(2018)Doi:10.1039/d0cc00959h
(2020)Doi:10.1021/jo01373a002
(1954)Doi:10.1016/S0040-4039(01)82922-1
(1981)Doi:10.1016/S0040-4039(01)90404-6
(1981)Doi:10.1039/jr9320000906
(1932)
