Acetaldehyde derivatives, their preparation process and their use

摘要

Azines of formula (I): <IMAGE> (I) in which R and R' either are identical and represent an alkyl radical containing 1 to 4 carbon atoms or an alkenyl radical containing 3 to 5 carbon atoms, or together form a radical of formula (II):-CHR1-(CR2R3)n-CHR4-(II)in which R1, R2, R3 and R4, identical or different, represent a hydrogen atom or an alkyl radical containing 1 to 4 carbon atoms and n represents 0 or 1, in their different stereoisomer forms, their preparation process and their use.