Substituted carbonyl phosphinyl-alkanoyl compounds

Claim 1

A compound of the formula ##STR253## wherein n is zero or one; R 5 is hydrogen, lower alkyl, halo substituted lower alkyl, benzyl, or phenethyl; R 3 is hydrogen, lower alkyl, benzyl, or benzhydryl; R 4 is hydrogen, lower alkyl, halo substituted lower alkyl, ##STR254## R 1 and R 2 are independently selected from the group consisting of hydrogen, lower alkyl, halo substituted lower alkyl, ##STR255## R 13 is hydrogen, lower alkyl of 1 to 4 carbons, lower alkoxy of 1 to 4 carbons, lower alkylthio of 1 to 4 carbons, chloro, bromo, fluoro, trifluoromethyl, hydroxy, phenyl, phenoxy, phenylthio, or phenylmethyl; q is zero or an integer from 1 to 7; m is zero, one, two or three; and p is one, two or three provided that p is more than one only if R 13 is hydrogen, methyl, methoxy, chloro, or fluoro.