TRANSITION-METAL COMPLEXES IX - NICKEL-COMPLEXES WITH A CHIRAL AZAPHOSPHOLE LIGAND

The reaction of (-)-(R)-myrtenal and (+)-(R)-phenylethylamine gave a S chiff base 1 which was reacted with MePBr2 in the presence of a base t o give under dehydrohalogenation of an intermediate McCormack product a salt 2. Treatment of 2 with sodium led to the formation of the azaph osphole 4. pi(3)-C3H5NiCl and 4 gave a 1:1 adduct 5 and nickel(0) gave a 1:4 complex 6. Compounds 4-6 were characterized by NMR spectroscopy as well as by single crystal X-ray structure determination. (C) 1998 Elsevier Science S.A.