申请人:Rhone-Poulenc Agrochimie
公开号:US04383849A1
公开(公告)日:1983-05-17
The invention relates to new 2,3-dihydro-4-pyrone derivatives. These compounds correspond to the formula: ##STR1## in which R.sub.2 represents an alkyl radical (C.sub.2 -C.sub.3) and R.sub.3 represents and alkyl radical (C.sub.1 -C.sub.4), an alkenyl radical (C.sub.3 -C.sub.5) or an alkynyl radical (C.sub.3 -C.sub.5). They can be used for destroying weeds in crops, in particular sunflower and cotton crops.
本发明涉及新的2,3-二氢-4-吡喃酮衍生物。这些化合物对应于以下公式:##STR1## 其中R.sub.2表示烷基基团(C.sub.2-C.sub.3),R.sub.3表示烷基基团(C.sub.1-C.sub.4),烯基基团(C.sub.3-C.sub.5)或炔基基团(C.sub.3-C.sub.5)。它们可用于破坏作物中的杂草,特别是向日葵和棉花作物。