Novel benzoxazines of the formula (I) ##STR1## wherein X is hydrogen or halogen, R.sup.1 is hydrogen or C.sub.1 -C.sub.2 -alkyl, R.sup.2 is cyano, trimethylsilyl, trimethylsilylmethoxycarbonyl, C.sub.1 -C.sub.4 -alkylthio or cyclopropyl and Q is ##STR2## and the use of the novel compounds as herbicides, and intermediates for the preparation of the novel benzoxazines.
化学式(I)的新型苯并
噁唑化合物为:##STR1## 其中X为氢或卤素,R.sup.1为氢或C.sub.1-C.sub.2-烷基,R.sup.2为
氰基,三甲基
硅基,三甲基
硅基甲氧基羰酰基,C.sub.1-C.sub.4-烷基
硫醚或环丙基,Q为:##STR2## 该新型化合物可用作
除草剂,并用作制备新型苯并
噁唑化合物的中间体。