Catalytic and asymmetric cyclopropanation of styrenes catalysed by ruthenium porphyrin and porphycene complexes

Abstract

Ruthenium porphyrin and porphycene complexes catalyse stereospecific cyclopropanation of styrenes; high product turnovers with up to 90.8% ee were achieved with the [Ru(P*)(CO)(EtOH)] catalyst (H ₂ P* = chiral D ₄ porphyrin).