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 MoreZibo Ocean International Trade Co.,Ltd(expird)
Contact:+86 533 5160706
Address:1117, Hongtai Bld., Songling rd, Zichuan,Zibo,Shandong,China
Contact:852-27701081
Address:Room 2509, New Tech Plaza, 34 Tai Yau St., San Po Kong, HK
Nanjing Fubang Chemical Co.,Ltd
Contact:+86-25-83179199
Address:5F,Tianzheng international plaza,No399 Zhongyang Road ,Nanjing China
Anhui Jiatiansen Agrochemical Co.,Ltd
Contact:15366811918
Address:chemical industrial park,xiangyu town,dongzhi county,anhui,china
PharmaResources(Kaiyuan)CO,.Ltd
Contact:+86-21-50720028
Address:No.3, Beihuan Road, Economic Development District, Kaiyuan City, Tieling City, Liaoning Province, China 112300
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)
