Toluene → 2-Pentanol, 4-methyl-, triester with boric acid (H3BO3)

반응식

[CH3:1][CH:2]([CH3:7])[CH2:3][CH:4]([OH:6])[CH3:5].[C:8]1([CH3:14])[CH:13]=[CH:12][CH:11]=C[CH:9]=1.[B:15]([OH:18])(O)[OH:16]>O>[B:15]([O:18][CH:12]([CH2:13][CH:8]([CH3:9])[CH3:14])[CH3:11])([O:16][CH:4]([CH2:3][CH:2]([CH3:7])[CH3:1])[CH3:5])[O:6][CH:4]([CH2:3][CH:2]([CH3:7])[CH3:1])[CH3:5]

참가 물질

실험 절차

Approximately 306 grams of 4-methyl-2-pentanol, 100 grams of toluene, and 62 grams of boric acid were charged to a 2-liter glass reactor having an inert nitrogen atmosphere and equipped with heater, agitator, and Dean-Stark tube with condenser. The reactants were heated up to about 155° C. for a period of about 5 hours with agitation unit water evolution during azeotropic distillation ceased. Approximately 52 grams of water was collected. The product was vacuum topped at about 155° C. to remove volatile solvent and filtered hot through diatomaceous earth to form a clear, water-white liquid.