Journal of the Chemical Society. Perkin transactions I p. 2352 - 2356 (1981)
Update date:2022-08-05
Topics:
Faragher, Roy
Gilchrist, Thomas L.
Southon, Ian W.
The imidoyl-substituted oxosulphonium ylides (2) reacted with dimethyl acetylenedicarboxylate and with dibenzoylacetylene by conjugate addition.The resulting allylic oxosulphonium ylides underwent <3,2> sigmatropic tearrangement at room temperature or below, to give the sulphoxides (3).These sulphoxides readily lost methanesulphinic acid when heated at 80 deg C, and gave the dihydropyridines (4).These reactions are presumed to go by way of intermediate azatrienes (6).The stabilised oxosulphonium ylides (7) reacted with dimethyl acetylenedicarboxylate by a similar sequence which gave the isolable trienones underwent electrocyclic ring-closure when heated in xylene.
View MoreContact:+86-15850770348
Address:51 OF XIANGFANGCUN ROAD, Nanjing 210002, China
Hangzhou Dingyan Chem Co., Ltd
website:http://www.dingyanchem.com
Contact:86-571-87157530
Address:RM.1118,NO.1 Building, Baiyun Tower,Jianggan Area, Hangzhou city, China,310004
Zhuhai Rundu Pharmaceutical co.,Ltd
Contact:+86-756-7630755
Address:No.6,North Airport Road,Sanzao Town,Jinwan District
Guangxi Nanning Guangtai Agriculture Chemical Co.,Ltd
Contact:+86-771-2311266
Address:Room703,Building12, Software Park Phase II,NO.68,Keyuan Road,Nanning City,Guangxi,China
Hangzhou Zyter Biological & Chemical Technology Co., Ltd.
website:http://www.zyterpharm.com
Contact:+86-18858184290
Address:West Wenyi Road, Cangqian, Yuhang
Doi:10.1021/ja00529a053
(1980)Doi:10.1021/ic00132a030
(1982)Doi:10.1002/jlac.198019800105
(1980)Doi:10.1021/ja01476a032
(1961)Doi:10.1021/jo00223a016
(1985)Doi:10.1021/ja01592a039
(1956)
