Title of article :
Synthesis of indazole-N-oxides via the 1,7-electrocyclisation of azomethine ylides
Author/Authors :
Nyerges، نويسنده , , Mikl?s and Fejes، نويسنده , , Imre and Vir?nyi، نويسنده , , Andrea and Groundwater، نويسنده , , Paul W and T?ke، نويسنده , , L?szl?، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2001
Abstract :
The first example of the 1,7-electrocyclisation of a non-stabilised azomethine ylide, e.g. 2, onto a nitro group, to give a 1,2,6-oxadiazepine intermediate, e.g. 4, is reported. Subsequent ring contraction results in the formation of the indazole-N-oxides 5, 12, and 14.
Keywords :
electrocyclic reactions , indazoles , Nitro compounds , Isoquinolines , Cycloadditions
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
