The present invention relates to a process for the production of formyl cyclohexene derivatives which are suitable as odorants as such or as intermediates for the preparation of further odorants. In particular the present invention relates to a domino-methylenation-Diels-Alder reaction of α,β-unsaturated aldehydes using formaldehyde in the presence of 1,3-butadienes. Compounds of Formula (IVa) and their use as flavor or fragrance as well as compounds of Formula (IVb) are also claimed.
本发明涉及一种甲酰基
环己烯衍
生物的生产工艺,该衍
生物既可用作臭味剂,也可用作制备其他臭味剂的中间体。本发明尤其涉及在
1,3-丁二烯存在下,使用
甲醛对 α,β-不饱和醛进行多米诺-亚甲基化-Diels-Alder 反应。本发明还要求得到式(IVa)化合物及其作为
香料或香精的用途以及式(IVb)化合物。