Abstract: O,O-bis-(pyridinyl)phosphonates and phosphonothioates corresponding to the formula: ##STR1## wherein X represents hydrogen, chloro, bromo, fluoro, trifluoromethyl or methyl; n represents an integer of from 1 to 3; Y represents oxygen or sulfur; and Z represents alkyl of 2 to 3 carbon atoms, haloalkyl of 1 to 2 carbon atoms with halo being chloro, fluoro or bromo, ethenyl, phenyl, phenylmethyl or cyclohexyl are prepared. These compounds have been found to have utility as insecticides.

Abstract: Novel N'-(substituted phenyl)-N-(2-(halophenoxy)ethyl)alkylanimidamides are disclosed. Their method of use in the control and kill of bacteria and fungi, and compositions containing the novel compounds as the active ingredients therein are claimed.

Abstract: Substituted (2-)pyridinyl phosphonothioates are disclosed which are useful in the control of cotton leafworm larvae. The compounds are prepared by the reaction of selected substituted pyridinol and phosphonochloridothioate reactants.

Abstract: Substituted pyridinyl phosphonamidates, phosphonamidothioates, phosphorodiamidates and phosphorodiamidothioates which are useful in the control of nematodes.

Abstract: Substituted pyridinyl-(2)-phosphoramidates and -phosphonamidothioates are disclosed which are useful as insecticides. The compounds are prepared by the reaction of selected substituted pyridinol and phosphonamido-chloridate or chloridothioate reactants.

Abstract: The present invention is directed to new substituted 1,3-dioxepin compounds corresponding to the formula: ##SPC1##Wherein R is a lower alkyl group of from 1 to about 8, both inclusive, carbon atoms or an aryl group of from 6 to about 8 carbon atoms inclusive. R' is hydrogen or an alkyl group of from 1 to about 8, both inclusive, carbon atoms, and n is an integer of from 0 to about 8. The present invention is further directed to a novel process for the preparation of such substituted 1,3-dioxepin compounds wherein n is 0 by reacting, at room temperatures, a corresponding trialkyl orthoalkanoate with cis-2-butene-1,4-diol in the presence of a non-oxidizing acid catalyst. The compounds of the present invention are suitable for use as herbicides.