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    • 35. 发明授权
    • Process for producing 3-phenoxybenzyl 2-(4-alkoxyphenyl)-2-methylpropyl
ethers
    • 2-(4-烷氧基苯基)-2-甲基丙基醚3-苯氧基苄基的制备方法
    • US4542243A
    • 1985-09-17
    • US540017
    • 1983-10-07
    • Mitsumasa UmemotoTamotsu AsanoTeruyuki NagataSatoshi Numata
    • Mitsumasa UmemotoTamotsu AsanoTeruyuki NagataSatoshi Numata
    • A01N31/14A01P7/04C07C41/01C07C41/16C07C41/24C07C41/30C07C43/225C07C43/267C07C43/29
    • C07C41/24C07C41/16C07C41/30
    • 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.
    • 本发明涉及一种具有优异的杀虫和杀螨活性的2-(4-烷氧基苯基)-2-甲基丙醚的3-苯氧基苄基的方法,其由式(Ⅳ)表示:其中R为低级 烷基,X 1和X 2各自为氢或氟原子,其包括使由式(I)表示的3-卤代-4-烷氧基脱乙酰卤:其中Y 1和Y 2各自为氢,氯 或溴原子,其中至少一个为氯或溴原子,R具有与上述相同的含义,X为卤素原子,与式(II)表示的3-苯氧基苄醇: 其中X1和X2具有与上述相同的含义,在碱的存在下得到由式(III)表示的2-(4-烷氧基-3-卤代苯基)-2-甲基丙基3-苯氧基苄基: (III)其中Y1,Y2,R,X1和X2具有与上述相同的含义,然后使产物进行加氢脱卤反应, 涉及制备由式(I)表示的3-卤代-4-烷氧基脱乙酰卤的方法,该方法包括使由式(Ⅴ)表示的2-卤代-1-烷氧基苯:其中Y1和Y2 各自为氢,氯或溴原子,其中至少一个为氯或溴原子,R为低级烷基,在甲酸烯丙酯的卤化物存在下,在-20℃至50℃。