申请人:Sumitomo Chemical Takeda Agro Company, Limited
公开号:US06630592B1
公开(公告)日:2003-10-07
A process as represented by reaction scheme:
which permits industrial mass production of &Dgr;2-1,2,4-oxadiazoline derivatives having excellent insecticidal effects or salts thereof in high yield with advantage, [wherein X1 is halogeno; R1 is optionally substituted alkyl, optionally substituted acyl, or ClCO; R2 is (1) halogeno, (2) C1-6 haloalkyl, (3) C1-6 haloalkoxy, or (4) phenyl optionally substituted with C1-6 haloalkyl; A is nitrogen or ═CR3— (wherein R3 is Cl or CN); R4 is C1-6 alkyl or C1-6 haloalkyl; n is 0, 1 or 2; and X2 is halogeno].
一种通过反应方案表示的过程:该过程允许以高产率优势工业大规模生产具有优异杀虫效果的&Dgr;2-1,2,4-噁唑啉衍生物或其盐,其中X1为卤素;R1为可选取代烷基,可选取代酰基或ClCO;R2为(1)卤素,(2)C1-6卤代烷基,(3)C1-6卤代烷氧基或(4)苯基,可选取代C1-6卤代烷基;A为氮或═CR3-(其中R3为Cl或CN);R4为C1-6烷基或C1-6卤代烷基;n为0、1或2;X2为卤素。