This invention discloses new compounds of the general formula ##EQU1## wherein R.sup.1 and R.sup.2 are each alkyl; Y is selected from the group consisting of hydrogen, alkyl, alkoxy, halogen, cyano, alkylthio, haloalkyl, alkoxyalkyl and alkylthioalkyl; n is an interger from 0 to 2; R.sup.3 and R.sup.4 are each selected from the group consisting of hydrogen and alkyl, or R.sup.3 and R.sup.4 together can form a cycloalkyl group of from 3 to 7 carbon atoms; and X is chlorine or bromine. The compounds of the foregoing description are useful as herbicides.