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 MoreTaizhou KEDE Chemical.Co.,Ltd.
Contact:86-576-84613060
Address:Jiangkou Chemical Zoon
website:http://www.josunpharma.com
Contact:+86-311-80715268 80766839
Address:No.39, Zhaiying Street, Shijaizhuang,Hebei,China
website:http://www.sigmaaldrich.com
Contact:800 558-9160
Address:Industriestrasse 25CH-9471 Buchs SGSwitzerland
Contact:+86-571-86025531 / 86024803
Address:1218-24 Guangyin Mansion,42 Fengqi East Road
Shanghai SMEC Trading Co., Ltd.
website:http://www.shanghaismec.com
Contact:+86-21-68811293
Address:ROOM 1101,NO.800 SHANGCHENG RD,SHANGHAI,CHINA
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)
