Zn; cupric acetate monohydrate in tetrahydrofuran N2-atmosphere; addn. of Ph3SnBr to soln. of BrZnCH2Br (prepared from Zn,CH2Br2 and cupric acetate) at 40°C, stirring overnight at 40.deg ree.C; evapn., extn. (hexane:3percent aq. HCl), sepn. of org. layer, washing (dilutedHCl), evapn., dissoln. (ether), addn. of aq. KF, stirring for 3 h, filt ration off of Ph3SnF, sepn. of org. layer, drying (Na2SO4), addn. of EtOH, evapn.; elem. anal.;

1: diethyl ether 2: CH3COCl View Scheme

in diethyl ether; water stirring (2 h); drying (Na2SO4), filtering, evapn. (vac.); detd. by (119)Sn NMR spectroscopy;

N-benzyl pyridinium halide in acetonitrile T=100°C; Equilibrium constant;

in diethyl ether

at 170°C;

N-benzyl pyridinium halide in acetonitrile T=100°C; Equilibrium constant;

in diethyl ether

in ammonia

1: diethyl ether 2: NaOH View Scheme