Process for the preparation of 3-substituted 4-cyano-pyrrole compounds
    71.
    发明授权
    Process for the preparation of 3-substituted 4-cyano-pyrrole compounds 失效
    制备3-取代的4-氰基 - 吡咯化合物的方法

    公开(公告)号:US5258526A

    公开(公告)日:1993-11-02

    申请号:US843480

    申请日:1992-02-28

    CPC分类号: C07D405/04 C07D207/34

    摘要: A process for the preparation of 3-substituted 4-cyanopyrrole compounds of the formula (I) ##STR1## in which Ar has the meaning given in the description, by reaction in a 1st stage of bromides (II)Ar--Br (II)with acrylonitrile in the presence of a solvent and a suitable reaction auxiliary to give acrylonitrile derivatives (III)Ar--CH.dbd.CH--CN (III)and in a 2nd stage with a phenylsulphonylmethyl isocyanide (IV)Ph--SO.sub.2 --CH.sub.2 --CN (IV)in the presence of a solvent and optionally in the presence of a suitable reaction auxiliary, characterised in that the 1st stage is carried out in the presence of a palladium catalyst and the 2nd stage in the presence of a 1.2- to 1.8-fold molar excess of alkali metal alcoholate or alkali metal hydroxide.

    摘要翻译: 其中Ar具有在描述中给出的含义,通过在溴化物(II)Ar-Br(II)的第一阶段中的反应制备式(I)所示的3-取代的4-氰基吡咯化合物的方法, 与丙烯腈在溶剂和适当的反应助剂存在下反应,得到丙烯腈衍生物(III)Ar-CH = CH-CN(III),第二阶段与苯基磺酰基甲基异氰化物(Ⅳ)Ph-SO2-CH2-CN( IV)在溶剂存在下,任选地在合适的反应助剂的存在下,其特征在于第一阶段在钯催化剂存在下进行,第二阶段在1.2-1.8倍的存在下进行 过量的碱金属醇化物或碱金属氢氧化物。

    Process for the preparation of hydroxybenzaldoxime O-ethers
    72.
    发明授权
    Process for the preparation of hydroxybenzaldoxime O-ethers 失效
    制备羟基苯甲醛肟O-醚的方法

    公开(公告)号:US4845288A

    公开(公告)日:1989-07-04

    申请号:US147417

    申请日:1988-01-25

    CPC分类号: C07C239/20

    摘要: A process for the preparation of a hydroxybenzaldoxime O-ether of the formula ##STR1## in which R.sup.1 represents alkyl, comprising(a) in a first step, hydrogenating a nitro-benzaldoxime O-ether of the formula ##STR2## using the calculated amount of hydrogen in the presence of a catalyst and in the presence of a diluent, and(b) in a second step, reacting the amino-benzaldoxime O-ether of the formula ##STR3## thus obtained with a diazotizing agent in acidic, aqueous solution, and, without isolation, thermally hydrolyzing the resultant diazonium salt of the formula ##STR4## in which X.crclbar. represents an equivalent of an inorganic anion, in acidic, aqueous solution.

    摘要翻译: 制备式(I)的羟基苯甲醛肟O-醚的方法,其中R 1表示烷基,包括(a)在第一步骤中氢化式IMAGE的硝基苯甲醛肟O-醚 II)在催化剂存在下和稀释剂存在下使用计算量的氢,和(b)在第二步中,使由此得到的式(III)的氨基 - 苯甲醛肟O-醚反应 用酸性水溶液中的重氮化试剂,并且在不分离的情况下,在酸性水溶液中热解所得到的其中X( - )代表无机阴离子的式Ⅺ(Ⅳ)的重氮盐。

    Hydroxybenzaldoxime O-ethers
    73.
    发明授权
    Hydroxybenzaldoxime O-ethers 失效
    羟基苯甲醛肟O-醚

    公开(公告)号:US4845287A

    公开(公告)日:1989-07-04

    申请号:US43662

    申请日:1987-04-28

    CPC分类号: C07C249/12 C07C251/48

    摘要: A process for the preparation of a hydroxybenzaldoxime O-ether of the formula ##STR1## in which R.sup.1 is alkyl, alkenyl or alkinyl, comprising reacting an aminobenzaldoxime O-ether of the formula ##STR2## in which R.sup.1 has the abovementioned meaning, with a diazotizing agent in acidic, aqueous solution, and thermally hydrolyzing the resulting diazonium salt of the formula ##STR3## in which X.crclbar. in an equivalent of an inorganic anion andR.sup.1 has the abovementioned meaning,in acidic, aqueous solution without intermediate isolation.The products are intermediates for agricultural and pharmaceutical chemicals.Novel amino-benzaldoxime O-ethers of the formula ##STR4## wherein R.sup.1 has the above-mentioned meaning.

    摘要翻译: 制备式(I)的羟基苯甲醛肟O-醚的方法,其中R 1是烷基,链烯基或炔基,包括使式(II)的氨基苯甲醛肟O-醚与其中R1具有 上述含义,在酸性水溶液中用重氮化剂,并热解水解所得的式(III)的重氮盐,其中X( - )的当量无机阴离子和R1具有上述含义, 在酸性水溶液中,无需中间隔离。 该产品是农药和化学药品的中间体。 新颖的式(Ia)的氨基 - 苯甲醛肟O-醚,其中R1具有上述含义。

    Process for the preparation of .beta.-hydroxyethyl-(1,2,4-triazole)
derivatives
    74.
    发明授权
    Process for the preparation of .beta.-hydroxyethyl-(1,2,4-triazole) derivatives 失效
    制备β-羟乙基 - (1,2,4-三唑)衍生物的方法

    公开(公告)号:US4719307A

    公开(公告)日:1988-01-12

    申请号:US916077

    申请日:1986-10-06

    摘要: The known .beta.-hydroxyethyl-(1,2,4-triazole) derivatives of the formula ##STR1## in which R.sup.1 represents alkyl, halogenoalkyl, alkenyl, alkinyl, optionally substituted cycloalkyl, optionally substituted cycloalkenyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted aralkenyl or an optionally substituted heterocyclic radical andR.sup.2 represents hydrogen, alkyl, halogenoalkyl, alkenyl, alkinyl, optionally substituted cycloalkyl, optionally substituted cycloalkenyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted aralkenyl or an optionally substituted heterocyclic radical,are prepared by a new process, which comprises stirring a .beta.-hydroxyethyl-(1,3,4-triazole) derivative of the formula ##STR2## in which R.sup.1 and R.sup.2 have the abovementional meanings, in the presence of a base and in the presence of an aprotic, dipolar diluent.

    摘要翻译: 已知的式(I)的β-羟基乙基 - (1,2,4-三唑)衍生物,其中R 1表示烷基,卤代烷基,烯基,炔基,任选取代的环烷基,任选取代的环烯基,任选取代的芳基,任选地 取代的芳烷基,任选取代的芳烯基或任选取代的杂环基,R 2表示氢,烷基,卤代烷基,烯基,炔基,任选取代的环烷基,任选取代的环烯基,任选取代的芳基,任选取代的芳烷基,任选取代的芳烯基或任选取代的杂环基 通过新方法制备,其包括在存在下述步骤的情况下搅拌式(II)的β-羟乙基 - (1,3,4-三唑)衍生物,其中R 1和R 2具有上述含义 在非质子偶极稀释剂的存在下。

    Process for the preparation of beta-hydroxyethyl-(1,2,4-triazole)
derivatives
    75.
    发明授权
    Process for the preparation of beta-hydroxyethyl-(1,2,4-triazole) derivatives 失效
    β-羟乙基 - (1,2,4-三唑)衍生物的制备方法

    公开(公告)号:US4626594A

    公开(公告)日:1986-12-02

    申请号:US672767

    申请日:1984-11-19

    摘要: Known .beta.-hydroxyethyl-(1,2,4-triazole) derivatives of the formula ##STR1## in which R represents alkyl, halogenoalkyl, optionally substituted cycloalkyl or optionally substituted phenyl,Z represents halogen, alkyl, cycloalkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogenoalkylthio, optionally substituted phenyl, optionally substituted phenoxy, optionally substituted phenylalkyl or optionally substituted phenylalkoxy andm represents the number 0, 1, 2 or 3,are prepared by a new process, which comprises reacting oxiranes of the formula ##STR2## in which R, Z and m have the abovementioned meaning, with 1,2,4-triazole of the formula ##STR3## in the presence of a cylcic amid of the formula ##STR4## in which R.sup.1 represents alkyl with 1 to 4 carbon atoms andn represents the number 3, 4 or 5,as diluent, and in the presence of a base.

    摘要翻译: 已知的式(I)的β-羟乙基 - (1,2,4-三唑)衍生物,其中R表示烷基,卤代烷基,任选取代的环烷基或任选取代的苯基,Z表示卤素,烷基,环烷基,烷氧基, 烷基硫代,卤代烷基,卤代烷氧基,卤代烷硫基,任选取代的苯基,任选取代的苯氧基,任选取代的苯基烷基或任选取代的苯基烷氧基,m代表数字0,1,2或3,通过新方法制备,其包括使式 在其中R,Z和m具有上述含义的式(II)中,与式(III)的1,2,4-三唑在式(IV)的酰胺存在下反应 ),其中R 1表示具有1至4个碳原子的烷基,n表示3,4或5个作为稀释剂,并且在碱的存在下。