Formic Acid → HCID 76576692, compound

Participants

Reaction Steps

A 80% formic acid solution (30 mL) was added to 7,7-diethoxy-5-methoxyhept-1-ene obtained in Preparation Example 57-(2) (2.98 g), and the mixture was stirred at room temperature for 10 minutes. After further adding a 75% ethanol solution (64 mL), sodium acetate (3.75 g) and hydroxylamine hydrochloride (1.92 g) were added, followed by further stirring for one hour and 20 minutes. The solvent was concentrated to about 40 mL under reduced pressure, followed by extraction with ethyl acetate. The resulting organic layer was sequentially washed with a saturated sodium bicarbonate solution (three times), water and brine. The resulting organic layer was dried over anhydrous magnesium sulfate. The drying agent was removed by filtration and then the filtrate was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography to obtain the title compound (1.95 g).

Provenance & Evidence