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 MoreContact:+(852) 301-98033
Address:Flat C, 23/F, Lucky Plaza, 315-321 Lockhart Road, Wan Chai, Hong Kong
Nanjing distinctions Medical Technology Co., Ltd.(expird)
Contact:+86-15996203785 13914714059
Address:nanjing,jiangsu , China
JinTan Pingsheng Chemical Co.,Ltd
Contact:+86-519-82828200
Address:NO.11Danfengxilu Road,Jintan City,Jiangsu,China
Dongguan Albiya Energy Science and Technology Co.,Ltd
Contact:+86-769-22181286
Address:Huanan Industial Park, Dongguan,China
Shanghai doly chemical Co.,Ltd
Contact:+86-21-34716221
Address:No.328,WuHe Roard,MinHang,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)
