Insecticidal Spironindane Derivatives

A compound of formula I

• wherein X is O or NR11 where R11 is hydrogen, optionally substituted alkyl, optionally substituted aryl or optionally substituted heteroaryl;
• Y is a single bond, C═O, C═S or S(O)m where m is 0, 1 or 2;
• R1 is hydrogen, optionally substituted alkyl, optionally substituted alkoxycarbonyl, optionally substituted alkylcarbonyl, aminocarbonyl, optionally substituted alkylaminocarbonyl, optionally substituted dialkylaminocarbonyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted alkoxy, optionally substituted aryloxy, optionally substituted heteroaryloxy, optionally substituted heterocyclyloxy, cyano, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl, optionally substituted cycloalkenyl, formyl, optionally substituted heterocyclyl, optionally substituted alkylthio, NO or NR13R14 where R13 and R14 are independently hydrogen, COR5, optionally substituted alkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted heterocyclyl or R13 and R14 together with the N atom to which they are attached form a group —N═C(R16)—NR17R18;
• R15 is H, optionally substituted alkyl, optionally substituted alkoxy, optionally substituted aryl, optionally substituted aryloxy optionally substituted heteroaryl, optionally substituted heteroaryloxy or NR19R20;
• R16, R17 and R18 are each independently H or lower alkyl;
• R19 and R20 are independently optionally substituted alkyl, optionally substituted aryl or optionally substituted heteroaryl;
• R2 and R3 are independently hydrogen, halogen, cyano, optionally substituted alkyl, optionally substituted alkoxy or optionally substituted aryl;
• each R4 is independently halogen, nitro, cyano, optionally substituted C1-8 alkyl, optionally substituted C2-6 alkenyl, optionally substituted C2-6 alkynyl, optionally substituted alkoxycarbonyl, optionally substituted alkylcarbonyl, optionally substituted alkylaminocarbonyl, optionally substituted dialkylaminocarbonyl, optionally substituted C3-7 cycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted heterocyclyl, optionally substituted alkoxy, optionally substituted aryloxy, optionally substituted heteroaryloxy, optionally substituted alkylthio or R21R22 where R21 and R22 are, independently, hydrogen, C1-8 alkyl, C3-7 cycloalkyl, C3-6 alkenyl, C3-6 alkynyl, C3-7 cycloalkyl(C1-4)alkyl, C2-6 haloalkyl, C1-6 alkoxy(C1-6)alkyl, C1-6 alkoxycarbonyl or R21 and R22 together with the N atom to which they are attached form a five, six or seven-membered heterocyclic ring which may contain one or two further heteroatoms selected from O, N or S and which may be optionally substituted by one or two C1-6 alkyl groups, or 2 adjacent groups R4 together with the carbon atoms to which they are attached form a 4, 5, 6, or 7 membered carbocyclic or heterocyclic ring which may be optionally substituted by halogen;
• n is 0, 1, 2, 3 or 4;
• each Ra is independently hydrogen, halogen, hydroxy, cyano, optionally substituted C1-6 alkyl, optionally substituted C2-6 alkenyl, optionally substituted C2-6 alkynyl, optionally substituted alkoxycarbonyl, optionally substituted alkylcarbonyl, optionally substituted alkylaminocarbonyl, optionally substituted dialkylaminocarbonyl, optionally substituted C3-7 cycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted heterocyclyl, optionally substituted alkoxy, optionally substituted aryloxy, optionally substituted heteroaryloxy, optionally substituted alkylthio, optionally substituted arylthio or R23R24N where R23 and R24 are, independently, hydrogen, C1-8 alkyl, C3-7 cycloalkyl, C3-6 alkenyl, C3-6 alkynyl, C3-7 cycloalkyl(C1-4)alkyl, C2-6 haloalkyl, C1-6 alkoxy(C1-6)alkyl, C1-6 alkoxycarbonyl or R23 and R24 together with the N atom to which they are attached form a five, six or seven-membered heterocyclic ring which may contain one or two further heteroatoms selected from O, N or S and which may be optionally substituted by one or two C1-6 alkyl groups, or two Ra groups attached to the same carbon atom are ═O or two Ra groups attached to adjacent carbon atoms form a bond, or two Ra groups together with the carbon atom to which they are attached form a three- to seven-membered ring, that may be saturated or unsaturated, and that may contain one or two hetero atoms selected from the group consisting of N, O and S, and which may be optionally substituted by one or two C1-4 alkyl groups;
• or two Ra groups together form a group —CH2—, —CH═CH— or —CH2CH2—;
• p is 0, 1, 2, 3, 4, 5 or 6;
• q is 0, 1, 2, 3, 4, 5 or 6 provided that p+q is 1, 2, 3, 4, 5 or 6;
• R8 is optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl, optionally substituted aryl, optionally substituted alkoxy, optionally substituted aryloxy, optionally substituted alkoxycarbonyl, optionally substituted alkylcarbonyl or optionally substituted alkenylcarbonyl;
• or salts or N-oxides thereof.