in toluene 12 h; Ambient temperature;

in toluene 12 h; Ambient temperature;

in benzene byproducts: LiCl; under N2 or Ar or in vac., reflux for 4 h; cooled to room temp., filtered, solvent evapd. from the filtrate, warmed in vac. to 50°C (removal of P(SiMe3)3); elem. anal.;

in benzene byproducts: LiCl; under N2 or Ar or in vac., 25°C; filtered, evapn. of solvent, P(SiMe3)3 removed by gentle warming; elem. anal.;

in benzene byproducts: LiCl; under N2 or Ar or in vac., reflux for 4 h; cooled to room temp., filtered, washed with hexane; elem. anal.;