FIELD: agriculture. SUBSTANCE: synthesis of 4-methyl-4-(1,1-dichloro-2-cyclopropylmethoxyethyl)-1,3-dioxane is carried out in two steps. At the first step interaction of 4-methyl-4-hydroxyethyl-1,3-dioxane with allyl chloride is carried out, the process takes place at 60-70 C in the presence of sodium hydroxide and phase transfer catalyst, triethylbenzylammonium chloride being used as said catalyst. At the second step 4-methyl-4-allyl oxyethyl-1,3-dioxane prepared at the first step interacts with chloroform, the process is carried out at 10-20 C in the presence of NaOH and catalytic amounts of triethylbenzylammonium chloride. EFFECT: searched novel biologically active compounds being derivatives of 1,3-dioxane. 2 tbl
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