1: in toluene T=20°C; 10 h; 2: With hydrogenchloride Further stages.;

1: in tetrahydrofuran; diethyl ether T=20°C; 16 h; 2: With lithium aluminium tetrahydride in tetrahydrofuran; diethyl ether 2 h; Heating;

in hexane byproducts: LiF; under Ar or N2, 1 equiv. of Li-compd. was added in hexane to hexane soln. of B-compd. at -60 °C, stirring for 30 min, warming to room temp.; soln. was filtered, evapd. in vac., crystn. from a min. amt. of hexane between -25 and -30 °C, elem. anal.;

P=25 Torr;