Production method of trans-2. 4-nonadienal

The invention discloses a production method of trans-2, 4-nonadienal, which comprises the following steps: by taking n-valeraldehyde, ethanol and vinyl ethyl ether as main raw materials, acetic acid as a solvent and calcium chloride as a water absorbent, carrying out quantitative reaction in a closed reaction kettle; the preparation method comprises the following steps: synthesizing 1, 1-diethoxypentane, 1, 1, 3-triethoxyheptane, 1, 1, 3-tetraethoxynonane, and finally hydrolyzing to generate the trans-2, 4-nonadienal. The preparation method comprises the following steps: synthesizing 1, 1-diethoxypentane, 1, 1, 3-triethoxyheptane and 1, 1, 3-tetraethoxynonane. Through repeated tests, trial production and production, a good effect is obtained; the product yield and quality are high, and the highest yield can reach 30%. The method is easy to operate, safe, environmentally friendly and suitable for large-scale industrial production. 本发明公开了一种反式-2.4-壬二烯醛的生产方法,本发明采用正戊醛与乙醇及乙烯基乙醚为主原料，乙酸作溶剂、氯化钙作吸水剂，在密闭的反应釜中定量反应，经过1.1-