ИСТИНА

Dialkanolamines and the related ligands (RN(CR’2CR”2OH)2, R=Alk, Ar; R’=H, Alk, Ar; R”=H, Alk, Ar) are fruitful for the synthesis of a large number of the derivatives of Ge, Sn and Ti. Such compounds and also aluminum ones can be regarded as perspective catalysts for many organic transformations (transition-metal germylene (stannylene) complexes for cross-coupling, aluminum and titanium compounds for polymerization reactions). A structure of a catalyst has a great influence on a result of the reaction catalyzed. This led us to expand a series of pyridine-containing ligands. A new ligand (1) has been synthesized. The compounds of Ge, Sn, Al and Ti based on the new ligand were obtained. Structures of the compounds obtained were established by 1H, 13C and 119Sn (in the case of 2b) NMR spectroscopy. A composition was confirmed by elemental analysis. The catalytic activity of the compounds in the ring opening polymerization of cyclic esters is under investigation.