Irradiation (UV/VIS); UV-irradiation at 25-50 °C for 18 h;;

hydrogenchloride in toluene byproducts: BrMgCl; n-heptylmagnesium bromide added dropwise at 0°C over 30 min to stoich. amt. of organotin chloride suspended in toluene under inert atm.; mixt. refluxed for 6 h; cooled to room temp.; hydrolyzed with 7percent HCl; org. layer sepd.; dried overnight (anhyd. Na2SO4); filtered; solvent evapd.; purified by vac. distn.; elem. anal.;

in diethyl ether heating at reflux for 2 h;;

in diethyl ether other by products;