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    METHOD FOR THE PREPARATION OF 2-HYDROXYBENZATHRONE AND OF THE SUBSTITUTION DERIVATIVES THEREOF
    8.
    发明专利
    METHOD FOR THE PREPARATION OF 2-HYDROXYBENZATHRONE AND OF THE SUBSTITUTION DERIVATIVES THEREOF 未知

    公开(公告)号：CA1094060A

    公开(公告)日：1981-01-20

    申请号：CA255392

    申请日：1976-06-22

    Applicant: MONTEDISON SPA

    Inventor： RIBALDONE GIUSEPPE ,  BORSOTTI GIAMPIERO

    IPC: C07C49/587 ,  C07C45/00 ,  C07C67/00 ,  C07C231/00 ,  C07C231/12 ,  C07C233/76 ,  C09B3/04 ,  C09B3/02

    Abstract: A process is disclosed for the preparation of 2-hydroxy-benzanthrone and substituted derivatives thereof having the general formula: (I) wherein: R1 = H, OH R2, R3 = H, Cl, -OH, -OCH3, characterized in that an anthraquinone-1-diazonium salt is reacted with an olefinic compound of the formula: wherein X = CN or OCOCH3, in an alcoholic medium of a lower monovalent alcohol and in the presence of a catalytic quantity of cuprous chloride, at a temperature between 20.degree. and 100.degree.C, and that the reaction intermediate thus obtained is reacted successively with alkali in alcoholic solution. As the diazonium salt there is used an anthraquinone -1-diazonium sulphate prepared from : 1-amino-anthraquinone, 4-hydroxy-1-amino-anthra-quinone, 5-hydroxy-1-amino-anthraquinone, 5-methoxy-1-aminoanthra-quinone, 5-chloro-1-amino-anthraquinone, 6,7-dichloro-1-amino-anthraquinone, or 5-benzamido-1-aminoanthraquinone. Certain novel intermediates useful for the production of these 2-hydroxy-benzanthrone derivatives are disclosed, as well as certain novel dyes obtainable from the 2-hydroxybenzanthrone derivatives.

    N-ETHYL-N-(2-BUTENE-4-CYANO)-AMINO-BENZENES AND PROCESSES FOR PRODUCING SAME
    9.
    发明专利
    N-ETHYL-N-(2-BUTENE-4-CYANO)-AMINO-BENZENES AND PROCESSES FOR PRODUCING SAME 未知

    公开(公告)号：CA977367A

    公开(公告)日：1975-11-04

    申请号：CA155901

    申请日：1972-11-07

    Applicant: MONTEDISON SPA

    Inventor： RIBALDONE GIUSEPPE ,  BORSOTTI GIAMPIERO

    IPC: C07C20060101 ,  C07C255/30 ,  C09B20060101

    Abstract: A process for the preparation of compounds having the formula: ** (see formula) ** Wherein r is a hydrogen atom or the methyl group, characterized in that an N-ethyl-amino-benzene selected from N-ethyl-aniline and N-ethyl-m-toluidine is reacted with 1,4-dichloro-2-butene, according to a trans-1,4-dichloro-2-butene/n-ethyl-amino-benzene molar ratio equal to at least 5, at a temperature between 20º and 120ºC already the atmospheric pressure, in the presence of a neutralizing agent; by the fact that the reaction mass thus obtained is subjected to a first extraction with 0.5 normal hcl, selective for the extraction of the unreacted N-ethyl-benzene-benzene and of the di-substitution product, and the residue subjected to a second extraction with normal 2 hcl, selective for N-ethyl-N- (2-butene-4-chloro) -amino-benzene; due to the fact that from the normal hydrochloric acid solution thus obtained, N-ethyl-N- (2-butene-4-chloroaniline or, respectively, N-ethyl-n) are isolated after neutralization. - (2-butene-4-chloro) -m-toluidine according to known techniques, and are then transformed by cyanidation into N-ethyl-N- (2-butene-4-cyano) -aniline or, respectively, N- ethyl-N- (2-butene-4-cyano) -m-toluidine. (Machine-translation by Google Translate, not legally binding)

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