Esters of phenalkyloxycarbonylamino acids

A compound of the following formula:

• ##STR7## wherein, n is one, two, three, four or five;
• R is lower alkyl, lower alkenyl or lower haloalkyl;
• R.sup.1 is hydrogen, lower alkyl, halogen, ##STR8## phenyl, or phenyl substituted at one, two or three of the ring carbon atoms with a group selected from lower alkyl, lower haloalkyl, lower haloalkoxy, lower haloalkylthio, halogen, cyano and nitro;
• R.sup.2 is hydrogen, lower alkyl, lower haloalkyl, phenyl or phenyl substituted at one, two or three of the ring carbon atoms with a group selected from lower alkyl, lower haloalkyl, lower haloalkoxy, lower haloalkylthio, halogen, cyano and nitro;
• R.sup.3 is hydrogen or lower alkyl;
• R.sup.4 is hydrogen, lower alkyl, lower haloalkyl or halogen;
• t is zero, one, two, three or four;
• W is lower alkyl, phenyl, OR, SR, NHR or N(R).sub.2 ;
• Y is halogen, lower alkyl, lower haloalkyl, lower haloalkoxy or lower haloalkylthio;
• and
• Z is hydrogen or independently selected from the values of Y.