Acetal → 1,1,3-Triethoxy-2-methyl-butane

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

236 g of acetaldehyde diethyl acetal (abbreviation: acetal) and 1 g of aluminum chloride are added in 500 ml of four necked bottle under protection of nitrogen, the solution is freezed to −10° C., and kept at −10° C.˜−5° C., a mixture of 118 g of acetaldehyde diethyl acetal and 86 g (0.945 mol) of ethyl-(1-propenyl)-ether is slowly dropped, and continue to stir it for 10 min after finishing dropping, and the end of reaction is detected by GC. A saturated NaHCO3 solution is added in the reaction to neutralize it to pH=7, and to layer, the oil layer is dried by anhydrous sodium sulfate after being washed by water, and heated to 50° C.; most of acetaldehyde diethyl acetal is recycled, to obtain 169.6 g of 1,1,3-triethoxy-2-methyl-butane by vacuum distillation, and its content is 97.2%, and its yield is 88%.

Herkunft & Nachweise