乙二醇二丁醚

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The mixture consisting of 50 g (0.431 moles) of 2-propyl-1,3-dioxolane and 250 g of ethylene glycol is hydrogenolyzed in a mechanically agitated autoclave of 1-liter capacity, in the presence of 9 mg of hydroquinone, 5 g of palladium catalyst deposited on carbon at a rate of 5% of palladium by weight and of 210 mg of concentrated phosphoric acid. After 3 hours at a temperature of 170° C. under a hydrogen pressure kept constant at 30 bars, the degree of conversion of the 2-propyl dioxolane reaches 98.2%; 46.1 g (0.390 moles) of 2-butoxy-1-ethanol are produced besides 2.35 g (0.0135 moles) of 1,2-dibutoxy ethane and 0.31 g (0.004 moles) of normal butanol.