A compound of the formula ##SPC1## Wherein R.sub.1 and R.sub.2 are alkyl having six or less carbon atoms, R.sub.3 is selected from the group consisting of alkyl having six or less carbon atoms and alkenyl having six or less carbon atoms, with the proviso that R.sub.1 and R.sub.2 don't represent simultaneously methyl group; Are useful as selective herbicide.
该化合物的
化学式为##
SPC1##其中R.sub.1和R.sub.2是碳原子数少于六个的烷基,R.sub.3选自碳原子数少于六个的烷基和烯基,但R.sub.1和R.sub.2不能同时表示甲基基团。该化合物可用作选择性
除草剂。