Synthesis of spiropyrazolines via1,3dipolar cycloaddition of nitriliminesDedicated to Professor Milan Kratochvil on the occasion of his 75thbirthday

Autor: Jedlovská, Eva, Fišera, Lubor, Lévai, Albert, Tóth, Gábor, Balázs, Barbara
Zdroj: Journal of Heterocyclic Chemistry; July 1999, Vol. 36 Issue: 4 p1087-1090, 4p
Abstrakt: The regio and stereoselective synthesis of spiropyrazolines 7 and 8 via1,3dipolar cycloaddition of C25nitrofurylNmethylnitrilimine, C25nitrofurylNphenylnitrilimine and C4nitrophenylNmethylnitrilimine to E3benzylidenechromanone 1, 1thiochromanone 2, 1tetralone 3 and E3benzylideneflavanone 4 is reported. The relative configuration and conformations of the spiropyrazolines were elucidated by various nmr methods.
Databáze: Supplemental Index