Tetrahedron p. 3321 - 3330 (1985)
Update date:2022-08-04
Topics:
Alemagna, A.
Buttero, P. del
Licandro, E.
Maiorana, S.
Papagni, A.
The o.formylarylazomethylenetriphenylphosphoranes carrying an electron withdrawing group on the ylidic carbon undergo thermal intramolecular cyclization to 3-oxo-indazolin-2-yl-methylenephosphorane derivatives.The latter compounds, and their 1-alkyl derivatives, in turn, undergo thermal and/or acid catalyzed rearrangement to 4-oxo-1,4-dihydroquinazoline derivatives and PPh3.Some possible reaction mechanisms are discussed, and some synthetic applications of the above reactions are shown.
View MoreShanghai Rich Chemicals Co., Ltd
website:http://www.richchemical.com
Contact:+86-21-20255798
Address:Pudong Shanghai,China
Contact:(86) 731 88718666
Address:Room 1222, Unit 4, Building B, Shangcheng, No.47, Kaiyuan East Road.
RongCheng K&S Chemical Co.,Ltd
Contact:0631-7336369
Address:rongcheng ,shandong province china
Ji'an Hairui Natural Plant Co. Ltd.
Contact:0796-8105528
Address:Meilin industry park, Qingyuan district Ji'an City, Jiangxi Province
Changzhou Xuanming Chemical Co., Ltd.
Contact:86 0519 85525329
Address:China Town, Xinbei, Changzhou, Jiangsu Room 6019
Doi:10.1021/jo902641g
(2010)Doi:10.1016/j.tet.2008.04.045
(2008)Doi:10.1002/chem.200800154
(2008)Doi:10.1055/s-2008-1032127
(2008)Doi:10.1021/jacs.1c03903
(2021)Doi:10.1016/j.molstruc.2007.08.026
(2008)
