PALLADIUM-CATALYZED CARBONYLATIVE CYCLIZATION VIA TRAPPING OF ACYLPALLADIUM DERIVATIVES WITH INTERNAL ENOLATES - ITS SCOPE AND FACTORS AFFECTING THE C-TO-O RATIO
E. Negishi et al., PALLADIUM-CATALYZED CARBONYLATIVE CYCLIZATION VIA TRAPPING OF ACYLPALLADIUM DERIVATIVES WITH INTERNAL ENOLATES - ITS SCOPE AND FACTORS AFFECTING THE C-TO-O RATIO, Tetrahedron, 50(2), 1994, pp. 425-436
The Pd-catalyzed carbonylative cyclization reaction involving omega-ac
yl-substituted acylpalladium derivatives can proceed via intramolecula
r trapping with either C- or O-enolates; the preferential formation of
either 5- or 6-membered rings dictates the C-to-O ratio in the trappi
ng with enolates.