Ethylene Glycol → HCID 59665583, compound

Participants

Reaction Steps

To a solution of 5-oxo-5,7-dihydro-furo[3,4-b]pyridine-2-carbaldehyde (100 mg, 0.61 mmol) in anhydrous benzene (5 mL) is added ethylene glycol (0.1 mL, 1.77 mmol), a catalytic amount p-toluenesulfonic acid monohydrate and 4 Å mole sieves. The reaction mixture is heated at a reflux temperature for 20 h. The reaction mixture is allowed to cool to room temperature and saturated. aqueous NaHCO3 solution is added. The resulting mixture is filtered through celite, washed with saturated aqueous NaHCO3 and EtOAc. The isolated organic layer is washed with brine (1×), dried with anhydrous Na2SO4, and concentrated. The residue is treated with EtOAc-Hexane (1:4) and the light brown solid which forms is collected by filtration and dried to give the title compound (42 mg, 33%).

Provenance & Evidence