1: 62 percent / tributylamine/KI / pentan-1-ol / 24 h / Heating 2: 92 percent / anhydrous HCl / 24 h / Heating 3: toluene / 24 h / Ambient temperature 4: toluene; H2O / 24 h / Ambient temperature View Scheme

in water; toluene 24 h; Ambient temperature; Yield given;