Ethanol → HCID 14157593, Verbindung

The crude (4R,5R)-4,5-bis(hydroxymethyl)-1,3dioxolane obtained in Example 3 was dissolved in 300 ml of pyridine. After the addition of 150 g of excessive amount of acetic anhydride under ice cooling, the mixture was reacted for about 16 hours while stirring at room temperature. 20 ml of ethanol was added in portions while cooling over a water bath in order to decompose the excessive amount of acetic anhydride. After concentration by evaporator, the concentrate was extracted with 500 ml of ethyl acetate and washed with water, followed by removal of the solvent by evaporator. Although this product may be used for the next reaction as it was, the purification by silica gel column chromatography afforded 79.29 g of light yellow oil of (4R,5R)-4,5-bis(acetoxymethyl)-1,3-dioxolane.