Pseudo-C2-Symmetric Bimetallic Bissalen Catalysts for Efficient and Enantioselective Ring-Opening of meso-Epoxides
Bimetallic catalysts have been synthesised based on Jacobsens C2-symmetric bissalen ligand. They constitute the first examples of compounds with pseuodo-C2 symmetry, owing to the presence of two different metal ions. They have been investigated in the ring-opening of meso-epoxides by trimethylsilyl azide (TMSN3). Pseudo-C2-symmetric [CrIII?Co]bissalen complexes were the best in inducing ee (9394?%