The preparation and characterization of some aliphatic 2,4-Dienals

Abstract

Three 2,4-dienals, 2,4-heptadienel, 2,4-nonadienal, and 2,4-hendecadienal, have been prepared synthetically for the first time, their semicarbazones, 2,4-dinitrophenylhydrazones and tetrahydroimidazole derivatives described, and ultraviolet absorption characteristics of the aldehydes and the two first-named derivatives recorded. The infra-red spectrum of 2,4-heptadienal is recorded and evidence presented for an all-trans-configuration.