in dichloromethane; dichloromethane-d2 using standard Schlenk techniques; Et3N in CD2Cl2-CH2Cl2 treated with B compd. and AlCl3; treated with N-methylindole for 3 h; treated with Et3Nand pinacol; rotated for 30 min; solvent removed under vac.; dried for 1 h; hexane added; filtered; hexane removed from filtrate under vac.; dried overnight; monitored by (1)H and (11)B NMR spectra;