Journal of the Chemical Society. Perkin transactions I p. 1395 - 1399 (1983)
Update date:2022-08-03
Topics:
Molina, Pedro
Tarraga, Alberto
Vilaplana, Maria Jesus
Hurtado, Emilia
Lorenzo, Mercedes
A number of derivatives of brigehead nitrogen heterocycles from pyrylium salts and amidrazones have been prepared. 2-Methylthio-4,6-diphenylpyrylium tetrafluoroborate (13) reacts with N3-aryl substituted amidazones to yield derivatives of <1,2,4>triazolo<1,5-a>pyridin-1-ium tetrafluoroborates <(17)-(21)>. 2-Ethoxycarbonyl-4,6-diphenylpyrylium (14) reacts with N3-aryl substituted amidrazones to give 4-oxopyrido<2,1-f><1,2,4>triazin-9-ium derivatives <(23)-(27)>.Compound (14) also reacts under neutral conditions with unsubstituted amidrazones to yield the corresponding pyridinium salts <(29)-(33)>; these cyclised on treatment with base giving the zwitterionic 4-oxidopyrido<2,1-f><1,2,4>triazin-9-ium compounds <(34)-(39)>.
View MoreJiangxi Province Bethel Pharmaceutical Co., Ltd.
Contact:+86-795-259 3456 ，+86-15957688008 13566650571
Address:Huangjindui Chemical Park， Shanggao County ，Yichun city，Jiangxi Province
Ji'nan Orgachem Pharmaceutical Co.,Ltd
Contact:+86-531-82687810
Address:Jinan
Chuzhou Baiao Biologhy S&T Co., Ltd.
Contact:+86-25-83212599；+86-25-83212699 13705185959
Address:Room 905, Tianzheng International Platza, No.399, Zhongyang Road ,Nanjing, Jiangsu Province, China
Jiaxing Carry Bio-Chem Technology Co.,Ltd
website:http://www.carrybiotech.com
Contact:0573-82788958
Address:Add.Fl 3th, Pharm Vally,Kaichuang Rd, Xiuzhou District, Jiaxing, Zhejiang,314031,China
Shanghai Hanshare Industry Co.,Ltd.
Contact:86 21 20960688
Address:RM902-903,Building E, Wanda Plaza,No.26,Zhoukang Road, Pudong District, Shanghai, China
Doi:10.1021/jm50001a021
(1985)Doi:10.1021/ja01498a051
(1960)Doi:10.1021/ja01349a501
(1932)Doi:10.1021/jm00147a003
(1985)Doi:10.1002/jhet.5570210513
(1984)Doi:10.1016/j.tet.2007.07.083
(2007)
