The present invention aims at providing an optically active difluoromethanesulfonanilide derivative exhibiting an excellent herbicidal activity at a low dose.
An optically active (R)-2'-(4,6-dimethoxy-pyrimidin-2-yl)hydroxymethyl-1,1-difluoromethanesulfonanilide derivative is represented by the formula (I)
(in the formula, R1 is a hydrogen atom, a C1-C4 alkyl group or a C1-C4 alkoxy C1-C4 alkyl group).
and this difluoromethanesulfonanilide derivative is produced by subjecting to optical resolution a racemate of 2'-(4,6-dimethoxypyrimidin-2-yl)hydroxymethyl-1,1-difluoromethanesulfonanilide derivative.
本发明旨在提供一种光学活性二
氟甲磺酰
苯胺衍
生物,该衍
生物在低剂量下具有优异的除草活性。
一种光学活性(R)-2'-(4,6-二
甲氧基嘧啶-2-基)羟甲基-1,1-二
氟甲磺酰
苯胺衍
生物由式(I)表示
(式中,R1 为氢原子、C1-C4 烷基或 C1-C4 烷氧基)。
这种二
氟甲磺酰
苯胺衍
生物是通过对 2'-(4,6-二
甲氧基嘧啶-2-基)羟甲基-1,1-二
氟甲磺酰
苯胺衍
生物的外消旋体进行光学解析而制得的。