p-Toluenesulfonic acid → HCID 118023273, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-(4-nitrophenyl)ethane-1,2-diol (7.0 g, 38.3 mmol), 2,2-dimethoxypropane (16 g, 153.2 mmol) and 4-methylbenzenesulfonic acid (2.6 g, 15.32 mmol) in acetone (100 mL) was stirred at 25° C. for 12 h. The reaction mixture was concentrated and then dissolved in ethyl acetate (300 mL). The organic layer was separated, washed by water (100 mL) and brine (100 mL), dried over sodium sulfate, filtered and concentrated. The residue was purified by silica gel column chromatography (petroleum ether/ethyl acetate=5/1) to afford the title compound (4.0 g, 40%) as a yellow oil.

Provenance & Evidence