phosphorus tribromide

1: 77 percent / conc. hydrochloric acid / ethanol / 2.5 h / Heating 2: 1.) n-butyl-lithium / 1.) hexane, tetramethylethylenediamine, 25 deg C, 2 h, 2.) 0 deg C, 1 h 3: 89 percent / lithium aluminium hydride 4: 38 percent / phosphorus tribromide View Scheme

1: 89 percent / lithium aluminium hydride 2: 38 percent / phosphorus tribromide View Scheme

via the bis-anion;