| abstract |
PURPOSE: To provide the subject new cyclohexane derivatives, i.e. agricultural and horticultural insecticides showing an excellent effect especially to insect pests belonging to Hemitpera. n CONSTITUTION: Compounds of formula I (R 1 is heterocycle containing 1-3N; R 2 is H, alkyl, haloalkyl or alkoxycarbonyl; R 3 is H or alkylcarbonyl), e.g. 5-(pyridin-4-yl)-2-cyclopropylcarbonl-3-hydroxy-2-cyclohexen-1-one. The above- mentioned compounds can be obtained by carrying out rearrangement reaction of a cyclohexane of formula II (R 4 is lower alkyl or cycloalkyl) in the presence of a catalyst (e.g. acetone cyanohydrin) in an inert solvent (e.g. acetonitrile) at room temperature-boiling point of the solvent. The amount of the catalyst used is within a range of 0.01-10 times mole based on 1 mole cyclohexene of formula II. n COPYRIGHT: (C)1992,JPO&Japio |