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    Insecticidal N'-substituted-N,N'-diacylhydrazines
    2.
    发明授权
    Insecticidal N'-substituted-N,N'-diacylhydrazines 失效
    杀虫N'取代-N，N'-二酰基肼

    公开(公告)号：US5530028A

    公开(公告)日：1996-06-25

    申请号：US129549

    申请日：1993-09-29

    Applicant: Zev Lidert ,  Dat P. Le ,  Robert E. Hormann ,  Thomas R. Opie

    Inventor： Zev Lidert ,  Dat P. Le ,  Robert E. Hormann ,  Thomas R. Opie

    IPC: A01N37/28 ,  A01N33/00 ,  A01N37/40 ,  A01N43/30 ,  A01N43/32 ,  C07C243/38 ,  C07C251/86 ,  C07C255/24 ,  C07C275/28 ,  C07C311/51 ,  C07C323/48 ,  C07C327/56 ,  C07D207/34 ,  C07D213/54 ,  C07D213/87 ,  C07D241/24 ,  C07D303/38 ,  C07D307/58 ,  C07D307/68 ,  C07D307/79 ,  C07D311/58 ,  C07D317/50 ,  C07D317/68 ,  C07D319/18 ,  C07D321/10 ,  C07D333/38 ,  A01N33/26 ,  C07C243/16

    CPC classification number: C07D213/54 ,  A01N37/40 ,  A01N43/30 ,  A01N43/32 ,  C07C243/38 ,  C07C251/86 ,  C07C255/24 ,  C07C275/28 ,  C07C311/51 ,  C07C323/48 ,  C07C327/56 ,  C07D207/34 ,  C07D213/87 ,  C07D241/24 ,  C07D303/38 ,  C07D307/58 ,  C07D307/68 ,  C07D317/68 ,  C07D319/18 ,  C07D333/38 ,  C07C2101/04 ,  C07C2101/14 ,  C07C2101/16 ,  C07C2102/10

    Abstract: Insecticidal compounds having the formula N-(2-R.sup.a -3-R.sup.b -4-R.sup.h -benzoyl)-N'-(2-R.sup.c -3-R.sup.d -4-R.sup.e -5-R.sup.f -benzoyl)-N'-R.sup.g -hydrazine wherein R.sup.a is a halo or lower alkyl; R.sup. b is lower alkoxy, optionally substituted with halo (preferably fluoro); R.sup.c is selected from hydrogen, halo, lower alkyl, lower alkoxy, lower alkoxy lower alkyl, and nitro; R.sup.d, R.sup.e and R.sup.f are each independently selected from hydrogen, bromo, chloro, fluoro, lower alkyl, lower alkoxy, and lower alkoxy lower alkyl; R.sub.g is a (C.sub.4 -C.sub.6)alkyl; R.sup.h is hydrogen, lower alkoxy, lower alkyl, or when taken together with R.sup.b is methylenedioxy (--OCH.sub.2 O--), 1,2-ethylenedioxy (--OCH.sub.2 CH.sub.2 O--), 1,2-ethyleneoxy (--CH.sub.2 CH.sub.2 O--) or 1,3-propyleneoxy (--CH.sub.2 CH.sub.2 CH.sub.2 O--) wherein an oxo atom is located at the R.sup.b position; and the substituents R.sup.c and R.sup.d, or R.sup.d and R.sup.e, or R.sup.e and R.sup.f when taken together can be methylenedioxy or 1,2-ethylenedioxy as well as compositions comprising an agronomically acceptable carrier and an insecticidally effective amount of such compounds; and methods of using such compounds and compositions.Also, methods for the production of the compounds and their intermediates, which methods comprise either admixing a 3-amino-2-(substituted)-benzoic acid, sodium nitrite and methanol under acidic conditions or admixing a 3,4-fused heterocyclic benzoic acid and an alkyl lithium reagent followed by subsequent reaction with an electrophilic reagent.

    Abstract translation: 具有式N-（2-Ra-3-Rb-4-Rh-benzoyl）-N' - （2-Rc-3-Rd-4-Re-5-Rf-benzoyl）-N'-Rg的杀虫化合物 肼，其中R a是卤素或低级烷基; Rb是低级烷氧基，任选被卤素（优选氟）取代; Rc选自氢，卤素，低级烷基，低级烷氧基，低级烷氧基低级烷基和硝基; Rd，Re和Rf各自独立地选自氢，溴，氯，氟，低级烷基，低级烷氧基和低级烷氧基低级烷基; R g是（C 4 -C 6）烷基; 当R 2为氢时，低级烷氧基，低级烷基，或与Rb一起与亚甲二氧基（-OCH 2 O-），1,2-亚乙二氧基（-OCH 2 CH 2 O-），1,2-亚乙基氧基（-CH 2 CH 2 O-） 丙氧基（-CH 2 CH 2 CH 2 O-），其中氧原子位于Rb位; 并且取代基R c和R d，或R d和R Re或Re和R f一起可以是亚甲二氧基或1,2-亚乙二氧基，以及包含农学上可接受的载体和杀虫有效量的这些化合物的组合物; 以及使用这些化合物和组合物的方法。 另外，制备化合物及其中间体的方法，该方法包括在酸性条件下混合3-氨基-2-（取代的） - 苯甲酸，亚硝酸钠和甲醇，或将3,4-稠合的杂环苯甲酸 和烷基锂试剂，随后与亲电试剂反应。

    Process for the preparation of 4-hydroxy-6-methyl-2-pyrone
    5.
    发明授权
    Process for the preparation of 4-hydroxy-6-methyl-2-pyrone 失效
    4-羟基-6-甲基-2-吡喃酮的制备方法

    公开(公告)号：US4570003A

    公开(公告)日：1986-02-11

    申请号：US384854

    申请日：1982-06-04

    Applicant: Thomas R. Opie

    Inventor： Thomas R. Opie

    IPC: C07D309/36 ,  C07D309/38 ,  C07D309/30

    CPC classification number: C07D309/38

    Abstract: This invention relates to a novel process for the preparation of 4-hydroxy-6-methyl-2-pyrone which comprises reacting 3-acetyl-6-methyl-2(H)-pyran-2,4(3H)-dione (dehydroacetic acid, "DHAA") with from 93% to about 99% sulfuric acid (1-7% water content) at temperatures from about 60.degree. to about 140.degree. C. under pressures from about 10 millimeters of mercury to about 75 pounds per square inch wherein the sulfuric acid to pyran weight ratio (H.sub.2 SO.sub.4 :DHAA) is from about 0.8:1 to about 3:1 and isolating the 4-hydroxy-6-methyl-2-pyrone.

    Abstract translation: 本发明涉及一种制备4-羟基-6-甲基-2-吡喃酮的新方法，其包括使3-乙酰基-6-甲基-2（H） - 吡喃-2,4（3H） - 二酮（脱氢乙酸 酸，“DHAA”），其中在约10毫米汞柱至约75磅/平方英寸的压力下，在约60至约140℃的温度下，具有93％至约99％的硫酸（1-7％含水量） 英寸，其中硫酸与吡喃的重量比（H 2 SO 4：DHAA）为约0.8:1至约3:1，并分离出4-羟基-6-甲基-2-吡喃酮。

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