Reactions of {TiO(salen)}n [salen = N,N′-bis(salicylidene)ethylenediamine] in aromatic aldehydes and ketones

Polymeric {Ti(salen)O}n reacts with aromatic acids generated by air oxidation of aromatic aldehydes or with the acid itself to form Ti salen complexes containing a carboxylato ligand and a Ti-O-Ti bridging system. In acetophenone addition of PhCOCH2 to the salen ligand CN bond carbon occurs.