Abstract: A compound of Formula (I):R.sup.1 (CA.dbd.CA.sup.1).sub.x --C(.dbd.X)NR.sup.2 R.sup.3 (I)where R.sup.1 is alkyl optionally substituted by a group selected from alkoxy, alkenyl, alkynyl, alkenyloxy, alkynyloxy, aryl, aryloxy, arylalkoxy and cycloalkyl fused to an aryl ring; x=1 or 2; X=O or S; each A and A.sup.1 is independently hydrogen, alkyl or haloalkyl; R.sup.2 is alkyl, alkenyl or cycloalkyl any of which may be substituted by halo, alkenyl, alkyl, cycloalkyl, alkynyl, dioxalanylalkyl or alkoxy; and R.sup.3 is selected from groups (A) to (D):(A) --Y.dbd.X.sup.1 --(R.sup.4).sub.a where X.sup.1 is O or S, Y is phosphorus or carbon, R.sup.4 is hydrogen, alkyl, alkoxy, acyl or CO.sub.2 R.sup.5 where R.sup.5 is alkyl or aryl, and a is 1 or 2(B) --S(R.sup.6)(O).sub.b where R.sup.6 is alkyl, aryl, aryloxy, alkoxy, thioalkoxy, thioaryl, alkythio, alkoxythio or arylthio and b is 0, 1 or 2(C) --S(O).sub.c NR.sup.7 R.sup.8 where c is 0, 1 or 2, R.sup.7 is --COR.sup.9 or --CO.sub.2 R.sup.9 where R.sup.

Abstract: Compound of the formula (I) are disclosedArQQ.sup.1 C(.dbd.X)NHR.sup.1 (I)or a salt thereof, wherein Ar is an optionally substituted polycyclic ring system containing n rings, where n is the integer 2 or 3, at least n-1 rings being aromatic and containing one to three ring nitrogen atoms and optionally containing one or more additional heteroatoms; Q is an alkyl chain containing 1 to 12 carbon atoms and optionally containing a sulphur or one or two oxygen atoms; Q.sup.1 is a group (C(R.sup.2).dbd.C(R.sup.3)).sub.a --(C(R.sup.4).dbd.C(R.sup.5)) wherein a is 0 or 1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different, at least two being hydrogen and the other two being independently selected from hydrogen, halo, C.sub.1-4 haloalkyl; X is oxygen or sulphur; and R.sup.1 is selected from hydrogen and C.sub.1-8 hydrocarbyl optionally substituted by dioxalanyl, halo, cyano, trifluoromethyl, trifluoromethylthio or C.sub.1-6 alkoxy are described which have activity particularly against arthropod pests.

Abstract: Pesticidal compositions for use against insects and acarines comprising a compound of Formula (I):R.sup.1 --(CA.dbd.CA').sub.n C(.dbd.S)NR.sup.2 R.sup.3 (I)whereinR.sup.1 is: C.sub.1-14 alkyl optionally substituted by C.sub.1-6 alkoxy, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.2-6 alkenyloxy, C.sub.2-6 alkynyloxy, aryl, aryloxy or aryl (C.sub.1-6) alkoxy; aryloxy or aryl (C.sub.1-6) alkoxy; any of which groups may be substituted by halo,n is 1 or 2,each A and A' is independently hydrogen, halo, C.sub.1-4 alkyl or halo (C.sub.1-4) alkyland R.sup.2 and R.sup.3 are independently hydrogen, C.sub.1-6 alkyl or C.sub.3-6 cycloalkyl, either of which may be substituted by one or more of halo, C.sub.2-6 alkenyl, C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl, C.sub.3-6 cycloalkenyl, C.sub.1-6 alkoxy, C.sub.2-6 alkynyl or cyano, except that, when n is 1 and R.sup.2 is alkyl and R.sup.3 is hydrogen and A and A' are both hydrogen then R.sup.1 is not substituted alkyl.

Abstract: Pesticidal compositions for use against insects and acarines comprising a compound of Formula (I):R.sup.1 --(CA.dbd.CA').sub.n C(.dbd.S)NR.sup.2 R.sup.3 (I)wherein R.sup.1 is: C.sub.1-14 alkyl optionally substituted by C.sub.1-6 alkoxy, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.2-6 alkenyloxy, C.sub.2-6 alkynyloxy, aryl, aryloxy or aryl (C.sub.1-6) alkoxy; aryloxy or aryl (C.sub.1-6) alkoxy; any of which groups may be substituted by halo,n is 1 or 2,each A and A' is independently hydrogen, halo, C.sub.1-4 alkyl or halo (C.sub.1-4) alkyl and R.sup.2 and R.sup.3 are independently hydrogen, C.sub.1-6 alkyl or C.sub.3-6 cycloalkyl, either of which may be substituted by one or more of halo, C.sub.2-6 alkenyl, C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl, C.sub.3-6 cycloalkenyl, C.sub.1-6 alkoxy, C.sub.2-6 alkynyl or cyano, except that, when n is 1 and R.sup.2 is alkyl and R.sup.3 is hydrogen and A and A' are both hydrogen then R.sup.1 is not substituted alkyl.Most of the compounds of Formula (I) are novel.

Abstract: A compound of Formula (I):(I) R.sup.1 (CA.dbd.CA.sup.1).sub.x --C(.dbd.X)NR.sup.2 R.sup.3where R.sup.1 is alkyl optionally substituted by a group selected from alkoxy, alkenyl, alkynyl, alkenyloxy, alkynyloxy, aryl, aryloxy, arylalkoxy and cycloalkyl fused to an aryl ring; x=1 or 2; X=O or S; each A and A.sup.1 is independently hydrogen, alkyl or haloalkyl; R.sup.2 is alkyl, alkenyl or cycloalkyl any of which may be substituted by halo, alkenyl, alkyl, cycloalkyl, alkynyl, dioxalanylalkyl or alkoxy; and R.sup.3 is selected from groups (A) to (D):(A) --Y=X.sup.1 --(R.sup.4).sub.a where X.sup.1 is O or S, Y is phosphorus or carbon, R.sup.4 is hydrogen, alkyl, alkoxy, acyl or CO.sub.2 R.sup.5 where R.sup.5 is alkyl or aryl, and a is 1 or 2(B) --S(R.sup.6)(O).sub.bwhere R.sup.6 is alkyl, aryl, aryloxy, alkoxy, thioalkoxy, thioaryl, alkythio, alkoxythio or arylthio and b is 0, 1 or 2(C) --S(O).sub.c NR.sup.7 R.sup.8where c is 0, 1 or 2, R.sup.7 is --COR.sup.9 or --CO.sub.2 R.sup.9 where R.sup.

Abstract: A compound of Formula (I):R.sup.1 (CA.dbd.CA.sup.1).sub.x --C(.dbd.X)NR.sup.2 R.sup.3(I)where R.sup.1 is alkyl optionally substituted by a group selected from alkoxy, alkenyl, alkynyl, alkenyloxy, alkynyloxy, aryl, aryloxy, arylalkoxy and cycloalkyl fused to an aryl ring; x=1 or 2; X=O or S; each A and A.sup.1 is independently hydrogen, alkyl or haloalkyl; R.sup.2 is alkyl, alkenyl or cycloalkyl any of which may be substituted by halo, alkenyl, alkyl, cycloalkyl, alkynyl, dioxalanylalkyl or alkoxy; and R.sup.3 is selected from groups (A) to (D):(A) --Y.dbd.X.sup.1 --(R.sup.4).sub.a where X.sup.1 is O or S, Y is phosphorus or carbon, R.sup.4 is hydrogen, alkyl, alkoxy, acyl or CO.sub.2 R.sup.5 is alkyl or aryl, and a is 1 or 2.(B) --S(R.sup.6)(O).sub.bwhere R.sup.6 alkyl, aryl, aryloxy, alkoxy, thioalkoxy, thioaryl, alkythio, alkoxythio or arylthio and b is 0, 1 or 2(C) --S(O).sub.c NR.sup.7 R.sup.8where c is 0, 1 or 2, R.sup.7 is --COR.sup.9 or --CO.sub.2 R.sup.9 where R.sup.