申请人:Mitsui Toatsu Chemicals, Inc.
公开号:US04542243A1
公开(公告)日:1985-09-17
The present invention relates to a process for producing 3-phenoxybenzyl 2-(4-alkoxyphenyl)-2-methylpropyl ethers having excellent insecticidal and acaricidal activities which are represented by formula (IV): ##STR1## wherein R is a lower alkyl group and X.sub.1 and X.sub.2 are each a hydrogen or fluorine atom, which comprises reacting a 3-halogeno-4-alkoxyneophyl halide represented by the formula (I): ##STR2## wherein Y.sub.1 and Y.sub.2 are each a hydrogen, chlorine or bromine atom, at least one of them being a chlorine or bromine atom, R has the same meaning as above and X is a halogen atom, with a 3-phenoxybenzyl alcohol represented by the formula (II): ##STR3## wherein X.sub.1 and X.sub.2 have the same meaning as above, in the presence of a base to obtain a 3-phenoxybenzyl 2-(4-alkoxy-3-halogenophenyl)-2-methylpropyl ether represented by the formula (III): ##STR4## wherein Y.sub.1, Y.sub.2, R, X.sub.1 and X.sub.2 have the same meaning as above, and then subjecting the product to a hydrodehalogenation reaction, and relates to a process for producing a 3-halogeno-4-alkoxyneophyl halide represented by formula (I), which comprises reacting a 2-halogeno-1-alkoxybenzene represented by formula (V): ##STR5## wherein Y.sub.1 and Y.sub.2 are each a hydrogen, chlorine or bromine atom, at least one of them being a chlorine or bromine atom, and R represents a lower alkyl group, with a methallyl halide in the presence of an acid catalyst at -20.degree. to 50.degree. C.
本发明涉及一种制备具有优异杀虫和杀螨活性的3-苯氧基苄基2-(4-烷氧基苯基)-2-甲基丙基醚的方法,其化学式表示为(IV): ##STR1## 其中,R是较低的烷基,X1和X2分别是氢或氟原子。该方法包括在碱存在下,将化学式(I)所示的3-卤代-4-烷氧基新戊烯基卤化物: ##STR2## 其中,Y1和Y2分别是氢、氯或溴原子,其中至少一个为氯或溴原子,R的含义与上述相同,X为卤原子。与化学式(II)所示的3-苯氧基苄醇反应: ##STR3## 其中,X1和X2的含义与上述相同,以获得化学式(III)所示的3-苯氧基苄基2-(4-烷氧基-3-卤苯基)-2-甲基丙基醚: ##STR4## 其中,Y1、Y2、R、X1和X2的含义与上述相同,然后将产物进行脱卤反应。本发明还涉及一种制备化学式(I)所示的3-卤代-4-烷氧基新戊烯基卤化物的方法,其中,该方法包括在酸催化剂存在下,将化学式(V)所示的2-卤代-1-烷氧基苯反应: ##STR5## 其中,Y1和Y2分别是氢、氯或溴原子,其中至少一个为氯或溴原子,R表示较低的烷基,与甲烯基卤化物在-20℃到50℃的条件下反应。