反应详情

(5-(2-Ethylbutoxy)-1,3-phenylene)dimethanol (0.50 g, 2.10 mmol) and CH2Cl2 (10 mL) were added to a round-bottom flask. To this solution was added PCC (1.35 g, 6.30 mmol), and the reaction was stirred for 16 h. The reaction mixture was concentrated under reduced pressure. Purification by column chromatography (90% hexanes/EtOAc) afforded the desired product (0.13 g, 25%, 3 steps) as a white semi-solid. 1H NMR (500 MHz, CDCl3) δ ppm 10.01 (s, 2H), 7.90 (s, 1H), 7.62 (s, 2H), 3.94 (d, J=5.5 Hz, 2H), 1.68 (hept, J=6.5 Hz, 1H), 1.46 (dec, J=6.5 Hz, 4H), 0.91 (t, J=7.5 Hz, 6H). 13C NMR (125 MHz, CDCl3) δ ppm 191.1, 160.7, 138.5, 124.1, 120.0, 71.1, 40.9, 23.5, 11.3.

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. customPurification by column chromatography (90% hexanes/EtOAc)