Methanol → HCID 90115698, compound

Participants

Reaction Conditions

Reaction Steps

At 0° C., 750 mg (1.92 mmol) of 8-[(2,6-difluorobenzyl)oxy]-N-(1,3-dihydroxy-propan-2-yl)-2-methylimidazo[1,2-a]pyridine-3-carboxamide were initially charged in 19 ml of DMF, 52 mg (2.11 mmol) of sodium hydride (95%) were added and the mixture was stirred at 0° C. for 30 min. A solution of 239 mg (1.53 mmol) of iodoethane in 2 ml of DMF was then slowly added dropwise at 0° C., and the mixture was stirred at RT overnight. At room temperature, another 9.4 mg (0.38 mmol) of sodium hydride (95%) were added, the mixture was stirred for 30 min and another 59.8 mg (0.38 mmol) of iodoethane were then added dropwise, and the mixture was stirred at room temperature overnight. A little methanol was added and the reaction mixture was poured into 20 ml of water and extracted twice with ethyl acetate. The combined organic phases were washed with aqueous saturated sodium chloride solution, dried over sodium sulphate, filtered and concentrated. The residue was purified by silica gel chromatography (mobile phase dichloromethane:methanol=40:1, 20:1). This gave 280 mg of the target compound (33% of theory, purity 96%).

Provenance & Evidence