Chemical compounds
    72.
    发明授权
    Chemical compounds 失效
    化合物

    公开(公告)号:US5395969A

    公开(公告)日:1995-03-07

    申请号:US95996

    申请日:1993-07-23

    摘要: A compound suitable for use as a charge transport compound in organic photoconductors or as a charge control agent in electrophotographic toners. The compound, in the neutral form, is of the Formula (1): ##STR1## wherein: Ar is of formula (a), (b) or (c) ##STR2## each L independently is H, C.sub.1-4 -alkyl or halo; R.sup.1, R.sup.3 and R.sup.4 are each independently alkyl, substituted alkyl, aryl, substituted aryl, aralkyl, substituted aralkyl, cycloalkyl or allyl;R.sup.2 is an alkyl, aralkyl, cycloalkyl, allyl or aryl group which is unsubstituted or substituted by a group defined by X.sup.4 ; andX.sup.1, X.sup.2, X.sup.3, X.sup.4 & X.sup.5 are each independently H or a group capable of stabilising a positive charge on the adjacent carbon atom.

    摘要翻译: 适合用作有机光电导体中的电荷输送化合物或作为电子照相调色剂中的电荷控制剂的化合物。 中性形式的化合物为式(1):其中:Ar为式(a),(b)或(c)的化合物。(a) (c)每个L独立地为H,C 1-4 - 烷基或卤素; R 1,R 3和R 4各自独立地为烷基,取代的烷基,芳基,取代的芳基,芳烷基,取代的芳烷基,环烷基或烯丙基; R2是未被取代或被X4定义的基团取代的烷基,芳烷基,环烷基,烯丙基或芳基; X 1,X 2,X 3,X 4和X 5各自独立地为H或能够在相邻碳原子上稳定正电荷的基团。

    Compositions of iodoaniline derivatives for visualization of the
gastrointestinal tract
    74.
    发明授权
    Compositions of iodoaniline derivatives for visualization of the gastrointestinal tract 失效
    用于可视化胃肠道的碘苯胺衍生物的组合物

    公开(公告)号:US5310537A

    公开(公告)日:1994-05-10

    申请号:US24555

    申请日:1993-03-01

    摘要: Disclosed are contrast agents of the formula ##STR1## contained in aqueous compositions and methods for their use in diagnostic radiology of the gastrointestinal tract whereinZ=H, halo, C.sub.1 -C.sub.20 alkyl, cycloalkyl, lower alkoxy, cyano, where the alkyl and cycloalkyl groups can be substituted with halogen or halo-lower-alkyl groups;R.sub.1 and R.sub.2 are independently H, C.sub.1 -C.sub.25 alkyl, cycloalkyl, acetyl or halo-lower-alkyl, wherein said C.sub.1 -C.sub.25 alkyl, cycloalkyl, acetyl and halo-lower-alkyl are optionally substituted with fluoro-lower-alkyl, aryl, lower-alkoxy, hydroxy, carboxy, lower-alkoxy carbonyl or lower-alkoxy-carbonyloxy,n is 1-4;y is 1-4; andx is 1 or 2.

    摘要翻译: 公开了含水组合物中含有的式“IMAGE”的造影剂及其用于胃肠道诊断放射学的方法,其中Z = H,卤素,C 1 -C 20烷基,环烷基,低级烷氧基,氰基,其中烷基和环烷基 基团可以被卤素或卤代低级烷基取代; R 1和R 2独立地为H,C 1 -C 25烷基,环烷基,乙酰基或卤代低级烷基,其中所述C 1 -C 25烷基,环烷基,乙酰基和卤代低级烷基任选被氟 - 低级 - 烷基,芳基, 低级烷氧基,羟基,羧基,低级烷氧基羰基或低级烷氧基 - 羰氧基,n为1-4; y为1-4; x为1或2。

    Process for the preparation of aromatic amines
    78.
    发明授权
    Process for the preparation of aromatic amines 失效
    芳香胺的制备方法

    公开(公告)号:US4375561A

    公开(公告)日:1983-03-01

    申请号:US318117

    申请日:1981-11-04

    CPC分类号: C07C209/68

    摘要: Aromatic amines are obtained from the corresponding cycloaliphatic oximes by heating the oxime to a temperature of from 150.degree. to 350.degree. C. in an ether group containing solvent in the presence of a catalyst containing a noble metal of the 8th auxiliary group of the Periodic Table of Elements. The solvent is preferably an aliphatic ether, especially a lower dialkyl ether of a polyethyleneglycol.

    摘要翻译: 在含有第8族元素周期表的贵金属的催化剂存在下,通过将肟在含有醚基的溶剂中加热至150℃至350℃的温度,从相应的脂环族肟得到芳族胺 的元素。 溶剂优选为脂族醚,特别是聚乙二醇的低级二烷基醚。