There are described compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another represent alkyl having 1-8 C atoms, or together with the bond C atom they represent a cycloaliphatic ring having 4-8 C atoms, and R.sub.3 represents ethyl; or wherein R.sub.1 represents alkyl having 1-8 C atoms, R.sub.2 represents hydrogen, or alkyl having 1-8 C atoms, and R.sub.3 represents tertiary alkyl having 4-8 C atoms. The compounds of the formula I can be produced in a simple manner, in good to very good yields, by isomerisation of suitably substituted allylamines in an inert organic solvent and in the presence of a catalyst. The compounds of the formula I constitute valuable intermediates for producing active substances for combating plant pests.
描述了化合物的公式为##STR1##其中R.sub.1和R.sub.2分别独立地表示具有1-8个C原子的烷基,或者与C原子的键结合形成具有4-8个C原子的环脂肪环,R.sub.3表示乙基; 或者其中R.sub.1表示具有1-8个C原子的烷基,R.sub.2表示氢,或者具有1-8个C原子的烷基,R.sub.3表示具有4-8个C原子的三级烷基。公式I的化合物可以通过在惰性有机溶剂中和催化剂的存在下适当取代的
烯丙胺异构化而简单地制备,并且收率良好至非常好。公式I的化合物是生产用于对抗植物害虫的活性物质的有价值的中间体。