Title of article :
Regioselective synthesis of 4,7,8,9-tetrahydro-2H-pyrazolo[3,4-b]quinolin-5(6H)-ones. Mechanism and structural analysis
Author/Authors :
Jairo Quiroga، نويسنده , , Diana Mej??a، نويسنده , , Braulio Insuasty، نويسنده , , Rodrigo Abonia، نويسنده , , Manuel Nogueras، نويسنده , , Adolfo Sanchez-Flores، نويسنده , , Justo Cobo، نويسنده , , John N Low، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2001
Abstract :
Reactions of 5-amino-3-methyl-1H-pyrazole with dimedone and aldehydes afford regioselectivelly tricyclic linear 3,7,7-trimethyl-4,7,8,9-tetrahydro-2H-pyrazolo[3,4-b]quinolin-5(6H)-ones in good yields. Several aspects on this regioselective reaction, such as the reaction mechanism and structural studies of the predominant tautomeric form, are treated.
Keywords :
regioselective pyrazole cyclocondensation , 4-b]quinoline , Tautomerism
Journal title :
Tetrahedron
Journal title :
Tetrahedron
