Process for preparing D,L-2-amino-4-methylphosphinobutyric acid
    41.
    发明授权
    Process for preparing D,L-2-amino-4-methylphosphinobutyric acid 失效
    制备D,L-2-氨基-4-甲基膦酰基丁酸的方法

    公开(公告)号:US4264532A

    公开(公告)日:1981-04-28

    申请号:US140198

    申请日:1979-06-15

    IPC分类号: A01N57/20 C07F9/30 C07F9/32

    摘要: PCT No. PCT/JP78/00058 Sec. 371 Date June 15, 1979 Sec. 102(e) Date June 15, 1979 PCT Field Dec. 18, 1978 PCT Pub. No. WO79/00405 PCT Pub. Date July 12, 1979This invention relates to a novel process for preparing D,L-2-amino-4-methylphosphinobutyric acid having herbicidal and antifungicidal activities which comprises subjecting acrolein to reaction with a dialkyl phosphonite to synthesize an acetal of an ester of 3-oxopropylmethylphosphinic acid; treating the thus obtained compound with an acid for deacetalization to obtain an ester of 3-oxopropylmethylphosphinic acid and then applying the Strecker's process used for amino synthesis to the thus obtained ester.

    摘要翻译: PCT No.PCT / JP78 / 00058 Sec。 371日期1979年6月15日 102(e)日期1979年6月15日PCT领域1978年12月18日PCT公布。 公开号WO79 / 00405 日期1979年7月12日本发明涉及一种具有除草和杀真菌活性的D,L-2-氨基-4-甲基膦酰基丁酸的新方法,该方法包括使丙烯醛与二烷基亚膦酸酯反应,合成3 - 氧代丙基甲基次膦酸 用酸脱乙酰化处理得到的化合物,得到3-氧代丙基甲基次膦酸的酯,然后将用于氨基合成的斯特雷克氏法用于得到的酯。

    2,3-Dicyanopyrazines
    42.
    发明授权
    2,3-Dicyanopyrazines 失效
    2,3-二氰基吡嗪

    公开(公告)号:US4259489A

    公开(公告)日:1981-03-31

    申请号:US969938

    申请日:1978-12-15

    摘要: Novel 2,3-dicyanopyrazine derivatives of the formula ##STR1## wherein A represents a hydrogen atom, a lower alkyl group, an unsubstituted or substituted phenyl group, a benzyl group, or a group of the formula -ZR.sub.1 in which Z represents an oxygen or sulfur atom and R.sub.1 represents an unsubstituted or substituted lower alkyl group, a lower alkenyl group, a lower alkynyl group, an unsubstituted or substituted phenyl group, or an unsubstituted or substituted benzyl group; and B represents a halogen atom, an alkyl group containing at least 3 carbon atoms, a phenyl group having a substituent at the ortho- and/or meta-position of the benzene ring, a group of the formula ZR.sub.1 in which Z and R.sub.1 are as defined, or a group of the formula ##STR2## in which R.sub.2 and R.sub.3, independently from each other, represent a hydrogen atom, an unsubstituted or substituted lower alkyl group, a lower alkenyl group, a cycloalkyl group, an unsubstituted or substituted phenyl group, or an unsubstituted or substituted benzyl group, with the proviso that R.sub.2 and R.sub.3 do not represent a hydrogen atom at the same time, and R.sub.2 and R.sub.3 together may form a 3- to 7-membered heterocyclic ring together with the nitrogen atom to which they are bonded, said heterocyclic ring optionally containing an additional hetero atom; and processes for production thereof.These compounds have high herbicidal activity, and are useful as active ingredients of herbicides.

    摘要翻译: 式IMA的新型2,3-二氰基吡嗪衍生物,其中A表示氢原子,低级烷基,未取代或取代的苯基,苄基或式-ZR1的基团,其中Z表示氧 或硫原子,R 1表示未取代或取代的低级烷基,低级烯基,低级炔基,未取代或取代的苯基,或未取代或取代的苄基; B表示卤素原子,含有3个以上碳原子的烷基,苯环的邻位和/或间位具有取代基的苯基,Z和R1分别为式ZR1的基团 或其中R2和R3彼此独立地表示氢原子,未取代或取代的低级烷基,低级烯基,环烷基,未取代或取代的苯基的式 基团或未取代或取代的苄基,条件是R 2和R 3不同时表示氢原子,并且R 2和R 3一起可以与氮原子一起形成3-至7-元杂环, 所述杂环任选地含有另外的杂原子; 及其生产方法。 这些化合物具有高除草活性,可用作除草剂的活性成分。

    Herbicidal 3-(2-phenylisopropyl)urea derivatives
    44.
    发明授权
    Herbicidal 3-(2-phenylisopropyl)urea derivatives 失效
    除草剂3-(2-苯基异丙基)脲衍生物

    公开(公告)号:US4078913A

    公开(公告)日:1978-03-14

    申请号:US597137

    申请日:1975-07-18

    IPC分类号: A01N47/28 A01N47/30 A01N9/20

    CPC分类号: A01N47/30 A01N47/28

    摘要: A compound of the general formula ##STR1## wherein Z is a hydrogen atom or a lower alkyl group; R.sub.1 is a hydrogen atom or an alkyl group; and R.sub.2 is a lower alkyl group or a phenyl group, which may have one or more lower alkyl, lower alkoxy, nitro, phenyl or trifluoromethyl groups or one or more halogen atoms as benzene substituent is found to be useful as a herbicide selectively combating weeds belonging to barnyardgrass of Gramineae and to Cyperacceae, without causing any phytotoxicity to rice plants.

    摘要翻译: 通式“IMAGE”的化合物,其中Z为氢原子或低级烷基; R1是氢原子或烷基; 发现可以具有一个或多个低级烷基,低级烷氧基,硝基,苯基或三氟甲基或一个或多个卤素原子作为苯取代基的低级烷基或苯基可用作选择性防治杂草的除草剂 属于禾本科的稗草,并且不会对水稻植物造成任何植物毒性。

    Herbicidal compositions and methods of combating weeds
    45.
    发明授权
    Herbicidal compositions and methods of combating weeds 失效
    除草组合物和防治杂草的方法

    公开(公告)号:US5344810A

    公开(公告)日:1994-09-06

    申请号:US31016

    申请日:1993-03-11

    CPC分类号: A01N43/68

    摘要: Herbicidal compositions comprising as active ingredients a triazine derivative represented by general formula [I]: ##STR1## and compound represented by general formula [II]: ##STR2## By synergistic effects of active ingredients, the herbicidal compositions show a high herbicidal effect at low dosage and have such a wide range of herbicidal spectrum that the compositions exhibit their high herbicidal effect not only against broad-leaved weeds but also against Gramineae weeds, etc. The compositions have flexibility of treatment to exhibit effectiveness as compared to known herbicides for field crops and crops are free from injury.

    摘要翻译: 包含作为活性成分的除草组合物由通式[I]表示的三嗪衍生物:通式[II]表示的化合物和通式[II]表示的化合物:其中,除草组合物通过活性成分的协同效应显示 在低剂量下具有高除草效果,并且具有这样广泛的除草光谱,该组合物不仅对阔叶杂草表现出高的除草效果,而且对禾本科杂草等表现出高的除草效果。组合物具有显示出有效性的灵活性, 用于田间作物和作物的已知除草剂不受伤害。

    Triazine derivatives, and herbicides comprising the same as the
effective ingredient
    48.
    发明授权
    Triazine derivatives, and herbicides comprising the same as the effective ingredient 失效
    三嗪衍生物和除草剂,其包含与有效成分相同的除草剂

    公开(公告)号:US4932998A

    公开(公告)日:1990-06-12

    申请号:US328019

    申请日:1989-03-23

    摘要: The triazine derivatives of the present invention are roughly classified into the compounds of the general formulas [I] and [II] and further classified into 4 types depending on the kind of the Z in the general formulas and the position of substitution of the aminoalkyl group on the benzo(thia)furanyl group. Furthermore, these triazine derivatives are useful as a herbicide or, in particular, as a herbicide for paddy rice plants with greater effectiveness and less injury by chemicals than known ones. In addition, they have a wide herbicidal spectrum and exhibit remarkable effects against various kinds of weeds.

    摘要翻译: 本发明的三嗪衍生物大致分为通式[I]和[II]的化合物,根据通式中的Z的种类和氨烷基的取代位置进一步分为4种 苯并(thia)呋喃基。 此外,这些三嗪衍生物可用作除草剂,特别是用作水稻植物的除草剂,其具有比已知的更高的有效性和更少的化学损伤。 此外,它们具有宽泛的除草谱,对各种杂草表现出显着的效果。