copper(II) bis(trifluoromethanesulfonate) in acetonitrile T=20°C; 2.5 h;

2,2'-azo-bisisobutyronitrile in benzene Heating; Yield given;

ammonium chloride; zinc in tetrahydrofuran; water appropriate alkyltin chloride is added to THF/H2O mixt. with excess of zinc powder, appropriate allyl bromide is added dropwise under stirring within 5 min, mixt. is stirred for 30 min; extn. (petroleum ether), separated org. layer is washed (aq. NaCl), drying (MgSO4), solvent is removed, distn.;