The aim of the present work was to fill this gap and investigate the pinacol coupling of aldimines in the presence of mischmetall (Ce and La), Zn-Cu couple, and Dewarda alloy (50% Cu, 5% Zn, 45% Al).
3 mm) is inactive toward aldimines even under reflux.
Only the use of Zn-Cu couple for the asymmetric coupling of aldimines in DMF is documented .
Data on the pinacol coupling of the model aldimines with three metal reagents used are presented in Table 1.
Cp2VCl2-catalyzed meso-selective pinacol coupling reaction of aldimines in the presence of chlorosilane and zinc metal.