FIELD: organic synthesis. SUBSTANCE: invention provides novel pyrimidine derivatives showing pesticide activity, in particular fungicidal and insecticide-acaricide activities, described by general formula I: 
(I), in which C1-C4 -alkyl or C1-C4- alkoxy-C1-C4-alkyl; R5 is hydrogen, C1-C4-alkyl, C1-C4-alkoxy, halogen; or R and R1 together with carbon atoms to which they are bonded represent 5- or 6-membered unsaturated isocyclic ring, or yet R and R1 together with carbon atoms to which they are bonded represent 5-, 6-, or 7- membered saturated isocyclic ring; X is NH group or oxygen atom; E is direct linkage or linear or branched C1-C4-alkandiyl; Q cycloalkyl radical of general formula II: R1-R4 (II) or radical of general formula III: 
(III), where n is integer from 2 to 7 and 
are defined in the formula of invention. EFFECT: expanded assortment of useful biologically-active compounds. 7 cl, 5 tbl, 13 ex
