Meta-(phenylalkoxy)phenyl-N-methoxy-N-methylurea compounds

A compound of formula:

• ##STR27## wherein X is selected from O, S, SO and SO.sub.2 ;
• Q is O or S;
• Y is selected from the group consisting of hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.5 alkenyl, C.sub.2 -C.sub.5 alkynyl, C.sub.1 -C.sub.4 alkoxy, CH.sub.3 S, CH.sub.3 SO.sub.2, CF.sub.3, CN, NO.sub.2, NH.sub.2, C.sub.1 -C.sub.3 alkylamino, ##STR28## Z is selected from the group consisting of hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, CF.sub.3 and NO.sub.2 ;
• U is hydrogen, C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy and halogen;
• A represents a C.sub.2 -C.sub.6 carbon chain which may be saturated or unsaturated, and is optionally monosubstituted with C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy, phenyl, CF.sub.3, CH.sub.3 S, CN, halogen, OH, O, NO.sub.2, ##STR29## or is optionally disubstituted wherein one of the substituents is selected from the hereinabovenamed group and the second substituent is selected from C.sub.1 -C.sub.4 alkyl or halogen;
• or A is a moiety represented by formula:
• ##STR30## wherein n is an integer from 1 to 5;
• R is C.sub.1 -C.sub.4 alkyl;
• R.sub.1 is selected from hydrogen, CH.sub.3 and CHO;
• R.sub.2 is selected from hydrogen, C.sub.1 -C.sub.2 alkyl, C.sub.3 alkenyl or C.sub.3 L alkynyl;
• R.sub.3 is selected from C.sub.1 -C.sub.3 alkyl, C.sub.3 alkenyl or C.sub.3 alkynyl, with the proviso that one of R.sub.1 and R.sub.2 must be hydrogen or CHO;
• R.sub.4 and R.sub.5 each are hydrogen or C.sub.1 -C.sub.3 alkyl;
• R.sub.6 is C.sub.1 -C.sub.3 alkyl.