Abstract: A compound of formula (I): ##STR1## where E is oxygen or sulphur; A is CR.sup.3 or N where R.sup.3 is hydrogen or hydrocarbyl; D completes a 5 or 6-membered non-aromatic heterocyclic ring which optionally contains additional heteroatoms selected from oxygen, nitrogen or sulphur and which is optionally substituted by an optionally substituted lower hydrocarbyl group, or an optionally substituted heteroaryl group; R.sup.1 and R.sup.2 are each independently hydrogen; optionally substituted lower hydrocarbyl, or optionally substituted heteroaryl, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached, form a heterocyclic ring; Z represents halogen optionally substituted lower hydrocarbyl, optionally substituted lower hydocarbyloxy, optionally substituted lower hydrocarbylthio, hydrocarbylsulphinyl or hydrocarbylsulphonyl, cyano, nitro, CHO, NHOH, ONR.sup.7' R.sup.7", SF.sub.5 ; CO (optionally substituted lower hydrocarbyl), acylamino, COOR.sup.7, SO.sub.2 NR.sup.8 R.sup.9, CONR.sup.

Abstract: Reductive dehydrohalogenation of an .alpha.-haloalcohol to form an alkene by subjecting the haloalcohol to electrolysis in the presence of a liquid diluent and a strong mineral acid. The electrolysis may be carried out in a diaphragm cell using a high hydrogen over voltage cathode.

Abstract: Herbicidal and fungicidal triazinediones of the formula ##STR1## wherein R.sup.1 is an aliphatic group, and either (a) R.sup.2 is carboxylic acyl, or (b) R.sup.2 is hydrogen or aliphatic and R.sup.3 together with the group X forms a divalent radical Z linking the exocyclic nitrogen with the ring to form a second 5 or 6 membered heterocyclic ring, and X is hydrogen or an aliphatic radical, or together with R.sup.3 forms the divalent group Z.

Abstract: Fungicidally and bactericidally active triazine diones of the formula: ##STR1## wherein R.sup.1 is alkyl, alkenyl, cycloalkyl, phenyl, halophenyl or adamantyl; R.sup.2 is alkyl or together with R.sup.3 and the adjacent N-atom forms a pyrrolidine ring; R.sup.3 is hydrogen, alkyl, alkoxy, phenyl or amino; and R.sup.4 is hydrogen or alkyl; or a salt thereof.

Abstract: Herbicidal and fungicidal triazinediones of the formula: ##STR1## wherein R.sup.1 is an aliphatic radical, R.sup.2 is a carboxylic acyl radical, R.sup.3 is a hydrogen atom or an aliphatic radical, and X is a hydrogen atom or an aliphatic radical.

Abstract: A process of severely damaging or killing unwanted plants, which comprises applying to the locus area, an effective amount of a thiatriazine compound of the formula ##STR1## and salts thereof, wherein R.sup.1 is cyclohexyl or an alkyl radical; X is a hydrogen atom or an alkyl group of 1 to 3 carbon atoms; and Z is a group R.sup.2 S-- wherein R.sup.2 is an alkyl group of 1 to 4 carbon atoms, or Z is a group --NR.sup.3 R.sup.4 wherein R.sup.3 is a hydrogen atom, an alkyl radical of 1 to 5 carbon atoms, or an alkanoyl radical of 2 to 5 carbon atoms, and R.sup.4 is an alkyl radical of 1 to 5 carbon atoms.

Abstract: A compound of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are alkyl groups of up to six carbon atoms, and X and Y are independently selected from the group consisting of carbonyl, hydroxymethylene, an ether of hydroxymethylene and an ester of hydroxymethylene. These compounds are useful as agricultural and horticultural fungicides.

Abstract: Compounds of the formula ##SPC1##Wherein X is halogen or hydroxy; R.sup.3 and R.sup.4 represent halogen radicals; and R.sup.5 represents a hydrogen atom or the cyano radical. These compounds are used in the preparation of pesticidal cyclopropane carboxylates.

Abstract: Plant fungicidal and bactericidal compositions containing a triazinedione of the formula: ##SPC1##Wherein R.sup.1 is alkyl, alkenyl, cycloalkyl, phenyl, halophenyl or adamantyl; R.sup.2 is alkyl or together with R.sup.3 and the nitrogen atom to which they are attached form a pyrrolidine ring; R.sup.3 is hydrogen, alkyl, alkoxy, phenyl or amino; R.sup.4 is hydrogen or alkyl; or a salt thereof; and the processes for combating plant fungi and bacteria using them.

Abstract: Heterocyclic compounds of formula: ##SPC1##Wherein R.sup.1, R.sup.2 and R.sup.3 are alkyl, and R.sup.4 is selected from alkyl, alkenyl, aralkyl, cycloalkyl, aryl and carboxyalkyl. The compounds and compositions comprising them have pesticidal, particularly fungicidal, utility.