Preparation of N-hydroxypyrazoles
    11.
    发明授权
    Preparation of N-hydroxypyrazoles 失效
    N-羟基吡唑的制备

    公开(公告)号:US4945166A

    公开(公告)日:1990-07-31

    申请号:US367053

    申请日:1989-06-16

    摘要: N-hydroxypyrazoles of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 may be identical or different and are each hydrogen, alkyl, halogen or aryl, or R.sup.1 and R.sup.2 or R.sup.2 and R.sup.3 together with the carbon atoms carrying these radicals form an aromatic or nonaromatic ring of 5 or 6 carbon atoms are prepared by a process in which(A) a pyrazole of the general formula II ##STR2## is converted in a conventional manner with an alkali metal hydroxide, alkali metal hydride or alkali metal carbonate into one of its metal salts of the general formula III ##STR3## where ME.sym. is a cation of an alkali metal, and (B) the resulting metal salt of the general formula III is reacted with dibenzoyl peroxide in an inert organic solvent or in a 2-phase system, in the presence or absence of a phase transfer catalyst.

    摘要翻译: 通式I的N-羟基吡唑(I)其中R 1,R 2和R 3可以相同或不同,各自为氢,烷基,卤素或芳基,或R 1和R 2或R 2和R 3与携带的碳原子一起 这些基团形成5或6个碳原子的芳族或非芳族环是通过以下方法制备的:其中(A)通式II的吡唑(II)以常规方式用碱金属氢氧化物,碱 金属氢化物或碱金属碳酸盐转化成其通式III(III)的金属盐之一,其中ME(+)是碱金属的阳离子,和(B)所得到的通式III的金属盐是 在相转移催化剂存在或不存在下,在惰性有机溶剂或2-相体系中与二苯甲酰基过氧化物反应。

    Preparation of 1-hydroxyimidazole
    14.
    发明授权
    Preparation of 1-hydroxyimidazole 失效
    1-羟基咪唑的制备

    公开(公告)号:US5112985A

    公开(公告)日:1992-05-12

    申请号:US586947

    申请日:1990-09-24

    摘要: The preparation of 1-hydroxyimidazoles of the formula I ##STR1## where the R radicals can be identical or different and are each halogen or an organic radical, it also being possible for vicinal radicals to be connected to form an aromatic or nonaromatic ring of from 3 to 12 carbon atoms, and n is from 0 to 3, entails reacting an imidazole of the formula II ##STR2## where Q is preferably hydrogen or, especially where R is not halogen, an alkali metal or alkaline earth metal cation, with an organic peroxide.The products are valuable intermediates for organic syntheses.

    摘要翻译: 制备式I(I)的1-羟基咪唑,其中R基团可以相同或不同,各自为卤素或有机基团,连接基团可连接形成芳族或非芳族化合物 3至12个碳原子的环,n为0至3,使式II(II)的咪唑与Q优选为氢或特别是其中R不是卤素的碱金属或碱 土壤金属阳离子,有机过氧化物。 该产品是有机合成的有价值的中间体。

    Preparation of 4-chloropyrazoles
    15.
    发明授权
    Preparation of 4-chloropyrazoles 失效
    4-氯吡唑的制备

    公开(公告)号:US5047551A

    公开(公告)日:1991-09-10

    申请号:US429783

    申请日:1989-10-30

    IPC分类号: C07D231/16

    CPC分类号: C07D231/16

    摘要: 4-Chloropyrazoles of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each independently of the others hydrogen or a radical which is inert under the reaction conditions, are prepared by reacting pyrazoles of the general formula II ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are each as defined above, with 0.95-10 equivalents of hypochloric acid, or salts thereof, in the substantial absence of any carboxylic acid.

    摘要翻译: 通式Ⅰ(I)的4-氯吡唑,其中R 1,R 2和R 3各自独立地为氢或在反应条件下为惰性的基团,通过使通式II的吡唑与< (II)其中R 1,R 2和R 3各自如上所定义,与0.95〜10当量的次氯酸或其盐基本上不存在任何羧酸。

    Dyeing and printing textile materials made of cellulose fibers
    18.
    发明授权
    Dyeing and printing textile materials made of cellulose fibers 失效
    染色和印花纤维素纤维制成的纺织材料

    公开(公告)号:US5558677A

    公开(公告)日:1996-09-24

    申请号:US379433

    申请日:1995-02-06

    IPC分类号: D06P1/22 D06P1/651 D06P3/60

    摘要: A process for dyeing and printing textile materials consisting of cellulose fibers or containing cellulose fibers in a blend with other fibers in an aqueous medium at above pH 12 with vattable dyes in the presence of cyclic compounds which contain at least one instance of the structural unit ##STR1## in the ring of the molecule as reducing agents and finishing the dyeing in a conventional manner.

    摘要翻译: PCT No.PCT / EP93 / 02424 371日期:1995年2月6日 102(e)日期1995年2月6日PCT提交1993年9月8日PCT公布。 出版物WO94 / 06961 日期1994年3月31日在包含至少一个实例的环状化合物的存在下,用含有可染色染料的纤维素纤维或含有纤维素纤维的纤维素纤维在水性介质中与其它纤维混合的染色和印刷方法 的结构单元(I)作为还原剂,并以常规方式染色。