Abstract: The present invention provides a class of substituted bicyclooctanes of formula ##STR1## wherein R is a C.sub.2-10 non-aromatic hydrocarbyl optionally substituted by cyano, halo, C.sub.1-4 alkoxy, C.sub.1-4 haloalkoxy or S(O).sub.m R.sup.3 ; R.sup.1 and r.sup.2 are independently hydrogen, halo, a C.sub.1-3 aliphatic group optionally substituted, S(O).sub.m,R.sup.4, or R.sup.1 and R.sup.2 and the carbon atoms to which they are attached form a C.sub.5-7 carbocyclic ring optionally substituted by halo, or a C.sub.1-3 aliphatic or alkoxy group;A-X is a group:(i) A'C.tbd.CX in which A' is a C.sub.3-6 alkyl, alkenyl or alkynyl or a C.sub.3-10 cycloalkyl or cycloalkenyl group all optionally containing one to three hetero atoms.(ii) BX in which B is a group (CH.sub.2).sub.2 O or (CH.sub.2).sub.2 S(O).sub.n or a C.sub.2-6 aliphatic chain optionally containing one or two oxygen or sulphur atoms and/or double bonds and optionally further substituted;X is hydrogen, halo, SiR.sup.5 R.sup.6 R.sup.7 or SnR.sup.5 R.sup.6 R.

Abstract: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2,]-octanes and bicyclo-[2,2,3]-nonanes having 2 or 3 ring hetero atoms selected from O, S and N, substituted at the 1-position by a 4-alkynylphenyl group and at the 4-position and optionally at the 3 and/or 5-position are valuable pesticides, particularly insecticides and acaracides. The compounds may be prepared by reacting an alkyne with the corresponding 4-iodophenyl substituted compound or by debromination of the corresponding 4-dibromomethylphenyl substituted compound.

Abstract: The present invention provides compounds of the formula (I): ##STR1## wherein R is a phenyl group, substituted fluorine atoms formulations containing them and their use in controlling pest infestation.

Abstract: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2]-octanes and bicyclo-[2,2,3]-nonanes having 2 or 3 ring hetero atoms selected from O, S and N, substituted at the 1-position by a 4-alkynylphenyl group and at the 4-position and optionally at the 3 and/or 5-position are valuable pesticides, particularly insecticides and acaracides. The compounds may be prepared by reacting an alkyne with the corresponding 4-iodophenyl substituted compound or by debromination of the corresponding 4-dibromomethylphenyl substituted compound.

Abstract: The present invention provides a class of novel substituted bicyclooctanes which have pesticidal activity, particularly against arthropod pests. Pesticidal formulations containing the compounds of the formula (I), their use in the control of pests and methods for their preparation are also disclosed.

Abstract: A compound of the formula (I): ##STR1## wherein R is C.sub.2-10 alkyl, alkenyl or alkynyl, each optionally subsituted by or methyl substituted by cyano, C.sub.3-4 cycloalkyl, halo, C.sub.1-4 alkoxy or a group S(O)mR.sup.4 where R.sup.4 is C.sub.1-4 alkyl and m is O, 1 or 2, or R is C.sub.3-10 cycloalkyl, C.sub.4-10 cycloalkenyl or phenyl, each optionally substituted by C.sub.1-4 alkoxy, C.sub.1-3 alkyl, C.sub.2-4 alkynyl, halo, cyano or a group S(O)mR.sup.4 as defined hereinbefore; R.sup.1 is halo, C.sub.1-3 alkyl, C.sub.2-3 alkenyl or alkynyl each optionally substituted by halo, cyano, C.sub.1-4 alkoxy, alkyl carbalkoxy containing up to 6 carbon atoms, a group S(O)mR.sup.4 as defined hereinbefore or alkynyl substituted by tri-C.sub.1-4 alkylsilyl, or R.sup.1 is cyano, spiro-cyclopropyl, gem dimethyl, oxo or methylene optionally substituted by cyano or C.sub.1-3 alkyl optionally substituted by fluorine, or R.sup.1 and R and the carbon atoms to which they are attached form a C.sub.

Abstract: Pesticidally-active alkynylphenyl-substituted 1,3-oxathianes and related substituted compounds of the formula: ##STR1## and their use in controlling pests such as arthropods and helminths are described.

Abstract: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2]-octanes and bicyclo[2,2,3]-nonanes having 2 or 3 ring hetero atoms selected from O, S and N, substituted at the 1-position by a 4-alkynylphenyl group and at the 4-position and optionally at the 3 and/or 5-position are valuable pesticides, particularly insecticides and acaracides. The compounds may be prepared by reacting an alkyne with the corresponding 4-iodophenyl substituted compound or by debromination of the corresponding 4-dibromomethylphenyl substituted compound.

Abstract: Pesticidal bicyclo-octanes are of the formula ##STR1## where R is a substituted or unsubstituted aliphatic or aromatic group, R' and R.sup.3 are H or a substituted or unsubstituted aliphatic or aromatic group, R.sup.2 is a substituted or unsubstituted heterocyclic group containing at least one ring nitrogen and is preferably a 3- or 4- pyridyl group, Z is CH.sub.2 CH.sub.2, CH.sub.2 O--CH.sub.2 S or COCH.sub.2 or CH(OR.sup.5)CH.sub.2 where R.sup.5 is H, alkyl, acyl or carbamoyl at Y and Y' are O or S(O).sub.m where m is 0, 1 or 2.Various methods for their preparation are described.

Abstract: The present invention provides compounds of the formula (I): ##STR1## wherein R is a C.sub.2-10 non-aromatic hydrocarbyl group, a C.sub.2-10 non-aromatic hydrocarbyl group substituted by, or methyl substituted by cyano, halo, C.sub.1-4 alkoxy, C.sub.1-4 alkoxy substituted by halo, or a group S(O).sub.m R.sup.4 where R.sup.4 is C.sub.1-4 alkyl optionally substituted by halo and m is 0, 1 or 2, or R is phenyl or phenyl substituted by C.sub.1-4 alkoxy, C.sub.1-3 alkyl, C.sub.2-4 alkynyl, halo, C.sub.1-4 haloalkyl, cyano or a group S(O).sub.m R.sup.4 as defined hereinbefore;R.sup.1 and R.sup.2 may be the same or different, and each is hydrogen, or a C.sub.1-3 aliphatic group, or a C.sub.1-3 aliphatic group substituted by halo; R.sup.3 contains between 3 and 18 carbon atoms and is a group R.sup.5 wherein R.sup.5 is a C.sub.1-13 non-aromatic hydrocarbyl group, a C.sub.1-3 non-aromatic hydrocarbyl group substituted by a C.sub.

Abstract: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2]-octanes and bicyclo-[2,2,3]-nonanes, having 2 or 3 ring hetero atoms selected from O, S and N substituted at the 1-position by a carbocyclic group other than an alkynylphenyl group, and substituted at the 4-position and optionally substituted at the 3 and/or 5 position, are valuable pesticides, particularly insecticides and acaricides. Various cyclization processes are disclosed to form the various bicyclo ring systems.

Abstract: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2]-octanes and bicyclo-[2,2,3]-nonanes, having 2 or 3 ring hetero atoms selected from O, S and N, substituted at the 1-position by a 4-alkynylphenyl group and at the 4-position and optionally at the 3 and/or 5-position are valuable pesticides, particularly insecticides and acaracides. The compounds may be prepared by reacting an alkyne with the corresponding 4-iodophenyl substituted compounds or by debromination of the corresponding 4-dibromomethylphenyl substituted compound.

Abstract: The present invention relates to a compound of the formula (I): ##STR1## wherein R is C.sub.2-10 alkyl, alkenyl or alkynyl, each optionally substituted by or methyl substituted by cyano, C.sub.3-4 cycloalkyl, halo, C.sub.1-4 alkoxy or a group S(O)m R.sup.4 where R.sup.4 is C.sub.1-4 alkyl and m is 0, 1 or 2, or Ris C.sub.3-10 cycloalkyl, C.sub.4-10 cycloalkenyl or phenyl, each optionally substituted by C.sub.1-4 alkoxy, C.sub.1-3 alkyl, C.sub.2-4 alkynyl, halo, cyano or a group S(O)m R.sup.4 as defined hereinbefore; R.sup.1 is halo, C.sub.1-3 alkyl, C.sub.2-3 alkenyl or alkynyl each optionally substituted by halo, cyano, C.sub.1-4 alkoxy, alkyl carbalkoxy containing up to 6 carbon atoms, a group S(O)m R.sup.4 as defined hereinbefore or alkynyl substituted by tri-C.sub.1-4 alkylsilyl, or R.sup.1 is cyano, spiro-cyclopropyl, gem dimethyl, gem dicyano, gem diethynyl, oxo or methylene optionally substituted by cyano of C.sub.1-3 alkyl optionally substituted by fluorine, or R.sup.

Abstract: 1,3-Dimethyl-4,6-dioxo-2-thioxo-N-[4-(4'trifluoromethylphenoxy)phenyl] perhydropyrimidine-5-carboxamide and analogues are useful pesticides, particularly against insect pests of timber.