Phenoxyphenylaminoalkylphosphinates useful in weed control

A compound of the following formula:

• ##STR41## wherein, n' is 1, 2 or 3;
• n is zero or 1;
• R.sup.1 is lower alkyl,
• R.sup.6 is hydrogen or lower alkyl;
• R.sup.5 is hydrogen or lower alkyl;
• Q is CH;
• Y is hydrogen or chloro;
• Z is chloro or trifluoromethyl;
• and
• R.sup.2 is selected from group (1), (2) or (3);
• ##STR42## (3) hydrogen, metal cation, lower alkyl, lower haloalkyl, lower cyanoalkyl, cycloalkyl, cycloalkalkyl, heterocycloalkyl, heterocycloalkalkyl, lower alkenyl, lower haloalkenyl, lower alkynyl, lower haloalkynyl, lower alkoxyalkyl, lower alkylthioalkyl, lower dialkylaminoalkyl, or substituted or unsubstituted aryl;
• R.sup.3 is lower alkyl, lower haloalkyl, lower alkenyl, lower haloalkenyl, cycloalkyl, cycloalkalkyl, substituted or unsubstituted aryl or R.sup.3 and R.sup.4 taken together form an alkylene group of 2 to 4 carbon atoms;
• R.sup.4 is hydrogen or lower alkyl;
• R.sup.7 is selected from group (3) or R.sup.2 ;
• and
• X.sup.3 is oxygen, sulfur or methylene.