二甲醇缩甲醛

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: 55 ml of acrylonitrile, 50 ml of dimethoxymethane, 100 g of 3,4,5-trimethoxybenzaldehyde and 30 g of DABCO are introduced into a 500 ml reactor fitted with a stirrer. After stirring for 25 hours, 50 g of methyl formate and 100 ml of methanol are added and the mixture is stirred at room temperature for more than 24 hours until the 3-hydroxy-2-methylene-3-(3,4,5-trimethoxyphenyl)propionitrile has disappeared; the 3-(3,4,5-trimethoxyphenyl)-2-methoxymethylacrylonitrile formed is isolated or reacted with sodium methylate, after removal of the volatile reactants and solvents, to give the acetal of the formula III. fitted with a stirrer