Sodium Hydroxide → 2-O-(5-Methyl-3-isoxazolyl)glycerol

関与物質

反応手順

A solution of 23.72 g of diethyl 2-(5-methyl-3-isoxazolyloxy)malonate (prepared as described in Preparation 19) in 120 ml of tetrahydrofuran was added dropwise to a suspension of 14.00 g of lithium aluminum hydride in 140 ml of tetrahydrofuran over a period of 30 minutes, whilst ice-cooling. The mixture was stirred at room temperature for 40 hours, after which 56 ml of a 4% w/v aqueous solution of sodium hydroxide was added dropwise to it over a period of 30 minutes, whilst ice-cooling. An insoluble material was filtered off using a Celite (trade mark) filter aid, and the filtrate was concentrated by evaporation under reduced pressure. The residue was subjected to column chromatography through 300 g of silica gel. 11.26 g of the title compound was isolated as a colorless oil from the fractions eluted with ethyl acetate.

情報源と証拠