Process for preparing 4-amino-3-methyl-N-substituted or unsubstituted
alkylanilines
    1.
    发明授权
    Process for preparing 4-amino-3-methyl-N-substituted or unsubstituted alkylanilines 失效
    制备4-氨基-3-甲基-N-取代或未取代的亚苄基胺的方法

    公开(公告)号:US4009205A

    公开(公告)日:1977-02-22

    申请号:US513787

    申请日:1974-10-10

    CPC分类号: C07D209/48

    摘要: A process for the preparation of 4-amino-3-methyl-N-substituted or unsubstituted alkylanilines comprising acylating and/or sulfonylating 4-amino-3-methyl-nitro-benzene having the formula (I) ##STR1## with an acylation or sulfonylation agent to obtain a compound having the general formula (II) ##STR2## wherein R.sub.1 represents a hydrogen atom or an acyl group, R.sub.2 represents an acyl group or a sulfonyl group, or R.sub.1 and R.sub.2 can combine as a difunctional acyl group; reducing the nitro group of the compound having the general formula (II) with hydrogen in the presence of a metal hydrogenation catalyst to obtain a compound having the general formula (III) ##STR3## wherein R.sub.1 and R.sub.2 are as above defined; alkylating the amino group of the compound having the general formula (III) with an alkylation agent selected from the group consisting of an alkyl halide, a substituted alkyl halide and an alkylene oxide to obtain a compound having the general formula (IV) ##STR4## wherein R.sub.1 and R.sub.2 are as above defined, R.sub.3 represents an alkyl group or a substituted alkyl group and R.sub.4 represents a hydrogen atom, an alkyl group or a substituted alkyl group; and hydrolyzing the compound having the general formula (IV) to obtain a compound having the general formula (V) ##STR5## wherein R.sub.3 and R.sub.4 are as above defined.

    Aminothiofluoran compounds, process for the production thereof, and
recording elements containing the same
    2.
    发明授权
    Aminothiofluoran compounds, process for the production thereof, and recording elements containing the same 失效
    氨基四氟化合物,其制备方法和含有它们的记录元素

    公开(公告)号:US4122089A

    公开(公告)日:1978-10-24

    申请号:US771857

    申请日:1977-02-23

    摘要: A compound capable of forming a color on contact with an electron accepting compound and useful as a chromogenic material for recording members represented by the general formula (I) ##STR1## wherein A represents an oxygen atom or a group capable of forming a lactam ring with benzen ring D; Y represents a hydrogen atom or a functional group (such as a halogen atom or a nitro group); and when A is an oxygen atom, R represents an amino, i.e., unsubstituted, group or a substituted amino group; R.sub.1 and R.sub.3, which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a nitro group, an amino group, or a substituted amino group; and R.sub.2 represents a hydrogen atom or a lower alkyl group; wherein R.sub.1 and R.sub.2 or R.sub.2 and R.sub.3 may combine with benzene ring C to form a nitrogen-containing heterocyclic ring condensed therewith; and when A is a group capable of forming a lactam ring with benzene ring D, R represents ##STR2## R.sub.2 represents ##STR3## R.sub.4 ', R.sub.4, R.sub.5 and R.sub.5 ', which may be the same or different, each represents a hydrogen atom or a lower alkyl group; and R.sub.1 and R.sub.3 each represents a hydrogen atom; processes for the production thereof; and recording members containing the same.

    摘要翻译: 能够形成与电子接受性化合物接触的颜色的化合物并且可用作由通式(I)表示的记录元件的显色材料,其中A表示氧原子或能够形成 内酯环与苯环D; Y表示氢原子或官能团(例如卤素原子或硝基)。 当A是氧原子时,R表示氨基,即未取代的基团或取代的氨基; R 1和R 3可以相同或不同,各自表示氢原子,低级烷基,硝基,氨基或取代的氨基; 并且R 2表示氢原子或低级烷基; 其中R1和R2或R2和R3可以与苯环C结合形成与其缩合的含氮杂环; 当A是能够与苯环D形成内酰胺环的基团时,R表示R 2代表R 4',R 4,R 5和R 5'可以相同或不同,各自表示氢原子 或低级烷基; 并且R 1和R 3各自表示氢原子; 生产过程; 和含有该记录的记录物。