反应详情

55 g (0.3 mole) of 4,8-dimethyl-deca-1,6-dien-3-ol and 46 g (0.4 mole) of α-formyl-propionic acid methyl ester are heated at from 140° to 200° C, whilst stirring, the methanol thereby eliminated is distilled off through a column, and the carbon dioxide eliminated is recorded by a gas flow meter. When the reaction has ceased, the contents of the flask are fractionated. 51 g of 2,6,10-trimethyl-dodeca-4,8-dien-1-al (yield, 77% of theory) are obtained. B.p. = 72° - 75° C at 0.01 mm Hg; nD25 = 1.4566. Odor: sweet, fruity, orange scent.

1. distillationthe methanol thereby eliminated is distilled off through a column