Title of article :
New chemistry of diazafulvenium methides: one way to pyrazoles
Author/Authors :
Pinho e Melo، نويسنده , , Teresa M.V.D. and Soares، نويسنده , , Maria I.L. and Rocha Gonsalves، نويسنده , , Ant?nio M.d’A.، نويسنده ,
Issue Information :
دوماهنامه با شماره پیاپی سال 2006
Abstract :
Diazafulvenium methides generated from the solution pyrolysis of pyrazolo[1,5-c][1,3]thiazole-2,2-dioxides participate in [8π+2π] cycloadditions giving pyrazolo[1,5-a]pyridine derivatives. 1-Methyl-diazafulvenium, generated under flash vacuum pyrolysis reaction conditions, undergoes an intramolecular sigmatropic [1,8]H shift giving 1-vinyl-1H-pyrazoles.
Keywords :
4-c]pyridine , Diazafulvenium methides , Vinyl-1H-pyrazoles , 5-a]pyridines , Sigmatropic shift
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
