1: 0.1 N HCl, THF / 1 h / Ambient temperature 2: LiOH, 85 percent H3PO4, glacial acetic acid, B(OH)3 / toluene; H2O 3: LiOH, 85 percent H3PO4, glacial acetic acid, B(OH)3 / toluene; H2O / pH 8.4 4: 99 percent / H2 / Pd/C View Scheme

1: 0.1 N HCl / Ambient temperature 2: toluene / pH = 8.4; buffer: LiOH, 85percent aq. H3PO4, CH3COOH, B(OH)3 View Scheme