2-(二甲氧基甲基)呋喃

反应条件: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of propargyl aluminum bromide, prepared from 52.9 g of 80% propargyl bromide in toluene, 6.41 g of aluminum splutters activated with 70 mg of mercuric choride and 80 ml of tetrahydrofuran, was added dropwise a solution of 42.2 g of furfural dimethyl acetal [J. Org. Chem., 40, 1478 (1975)] in 30 ml of tetrahydrofuran during a 15 minute period while maintaining a temperature of. 25° to 30° C. The mixture was stirred for 20 minutes at 25° C., then partitioned with ether and ice-water. The organic layer was separated, washed with water, then aqueous sodium bicarbonate, finally with brine and dried. After evaporation the residue was distilled, giving 39.8 g of the desired compound, bp 68°-69° C. (11 mm). while maintaining a temperature of 25° to 30° C partitioned with ether and ice-water The organic layer was separated washed with water aqueous sodium bicarbonate, finally with brine and dried After evaporation the residue was distilled

反应条件: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of propargyl aluminum bromide, prepared from 52.9 g of 80% propargyl bromide in toluene, 6.41 g of aluminum splutters activated with 70 mg of mercuric choride and 80 ml of tetrahydrofuran, was added dropwise a solution of 42.2 g of furfural dimethyl acetal [J. Org. Chem., 40, 1478 (1975)] in 30 ml of tetrahydrofuran during a 15 minute period while maintaining a temperature of. 25° to 30° C. The mixture was stirred for 20 minutes at 25° C., then partitioned with ether and ice-water. The organic layer was separated, washed with water, then aqueous sodium bicarbonate, finally with brine and dried. After evaporation the residue was distilled, giving 39.8 g of the desired compound, bp 68°-69° C. (11 mm). while maintaining a temperature of 25° to 30° C partitioned with ether and ice-water The organic layer was separated washed with water aqueous sodium bicarbonate, finally with brine and dried After evaporation the residue was distilled