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:+86-20-32051076
Address:1105,Building A, International Business Incubator,Science City
Beijing ZhongDaXinHe Chemical Product Co.,Ltd(expird)
Contact:010-52876516
Address:tongzhoubeiyuan
Contact:+86-574- 87178138; 87297407
Address:No. 809, Liudingxingzuo, cangsong road, Ningbo, China
NanJing Rate Biochemicals CO., LTD
Contact:+86-25-84931986
Address:NO. 1 Hongjing Road,Jiangning Science Park,Nanjing,China
Hangzhou Share Chemical Co., Ltd(expird)
Contact:+86-57187093700
Address:Hang Xing Road
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)
