Process for the preparation of polyene aldehydes, in particular, of 5 - 2, 6,6 - trimethyl - cyclohexine - (1) - yl - 3 - methyl - pentadiene - (2, 4) - 1 - (1) and 9 - 2, 6, 6 - trimethyl - cyclohexane - (1) - yl - 3, 7 -, - nonatétraène - (2, 4, 6, 8 - 1 - (1))

摘要

Compounds of formula FORM:0999999/C2/1 wherein n=1 or 2 are converted to the corresponding aldehyde by reaction in a liquid medium (preferably aqueous) with an inorganic (e.g. alkali metal or ammonium) hypophosphite and Raney nickel.