Toluene → 3-Cyclopentyloxy-4-methoxybenzaldehyde

Participants

Reaction Conditions

Reaction Steps

A solution of 100 g (0.66 mol) of isovanillin, 136.2 g (0.99 mol) of anhydrous potassium carbonate, and 3 g of potassium iodide in 650 ml of anhydrous dimethylformamide was stirred at 65° C. 127.3 g (0.85 mol) of cyclopentyl bromide was slowly added dropwise for 1 hour to the solution. This solution was stirred at 65° C. for 1 day and, then, its temperature was lowered to a room temperature. It was diluted by 2.0 L of toluene and was washed with 1M sodium hydroxide (2×1.5 L). The aqueous layer was extracted with 0.5 L of toluene, and the organic layer was washed with distilled water (2×1.5 L). The organic layer was dried and concentrated to obtain 117 g of light brown oily title compound. 1H NMR(CDCl3,d): 9.84(s, 1H) 7.42(m, 2H) 6.95(d, 1H, J=9 Hz) 4.87(m, 1H) 3.93(s, 3H) 2.1-6(m, 8H)

Provenance & Evidence