3,4-dihydro-5-methyl-6-pentyl pyran-2-one and 6-methyl-1-pentyl-2,7-dioxabicyclo 4.1.0heptane-3-one and method to obtain them simultaneously

摘要

the invention concerns new lactones 3,4 - dihydro - 5 - methyl - 6 - pentylopiran - 2 - one of the formula 2 and 6 - methyl - 1 - pentyl - 2.7 - dioksabicyklo [4.1.0] heptane - 3 - one of the model 3 and the way their co production, which is that the single step reaction of dihydrojasmonu is replaced in the oxidation reaction of baeyera - villigera 3,4 - dihydro - 5 - methyl - 6 - pentylopiran - 2 - one of the formula 2 and 6 - methyl - 1 - pentyl - 2.7 - dioksabicyklo [4.1.0] heptane - 3 - one of the model 3.lactones of formula 2 and formula 3 can be used as plant protection products against harmful species of insects.