Aromatic 1,3-dicarbonyl compounds react with not enolizable aldehydes in the presence of C2H5MgBr or AlCl3 affording 2-carbethoxy- and 2-acetyl-1-indanones via tandem Knoevenagel condensation-cycloalkylation process.
Friedel-crafts coordinated processes: 1-Oxoindanes from aromatic β-dicarbonyl compounds and aldehydes
Variously substituted 1-oxoindanes were synthesized by highly selective bis-alkylation of aromatic beta-dicarbonyl compounds with non enolizable aldehydes.