3.
    发明专利
    未知

    公开(公告)号:DE1619614A1

    公开(公告)日:1970-06-04

    申请号:DE1619614

    申请日:1966-05-04

    Applicant: OREAL

    Abstract: 1,143,589. 2 - Amino - 4 - hydroxytoluene. L'OREAL. 7 April, 1966 [6 May, 1965], No. 3274/68. Divided out of 1,143,588. Heading C2C. 2 - Amino - 4 - hydroxytoluene is prepared by reacting p-cresol with a compound capable of protecting the phenol function, nitrating the benzene ring of the reaction product in mposition with respect to the protected phenol function, reducing the nitro group to an amino group and then liberating the phenol function. In the example 4-hydroxytoluene is reacted with methane sulphochloride, the mesylated product is dissolved in sulphuric acid and nitrated with a mixture of nitric and sulphuric acids, the nitrated product is reduced with tin and hydrochloric acid and the amino compound produced is hydrolysed with sodium hydroxide to obtain 2-amino-4-hydroxy-toluene.

    7.
    发明专利
    未知

    公开(公告)号:NL184663C

    公开(公告)日:1989-10-02

    申请号:NL7416110

    申请日:1974-12-11

    Applicant: OREAL

    Abstract: New dyestuffs are described for keratinic fibers which produce particularly luminous shades without the need for an oxidizing agent. These dyestuffs have the formula: (I) or a tautomeric form thereof wherein each of R1 and R4, which may be identical or different, represents a member selected from hydrogen, halogen, alkyl having 1 to 6 carbon atoms, alkoxy having 1 to 6 carbon atoms, acylamino and ureido; each of R2 and R3, which may be identical or different, represents a member selected from hydrogen, halogen, alkyl having 1 to 6 carbon atoms, alkoxy having 1 to 6 carbon atoms, amino, N-alkylamino, N-(hydroxyalkyl)-amino, N-(carbamyl-alkyl)-amino, acylamino and ureido, each of said alkyls containing 1 to 6 carbon atoms; each of R5 and R6, which may be identical or different, represents a member selected from hydrogen, halogen, alkyl containing 1 to 6 carbon atoms and alkoxy containing 1 to 6 carbon atoms, with the proviso that when R5 and R6 are both other than hydrogen at least one is in a meta-position relative to the NHR7 group; and R7 represents a member selected from alkyl, hydroxyalkyl, acylaminoalkyl, mesylaminoalkyl, carbamylalkyl, aminoalkyl, piperidinoalkyl and morpholinoalkyl, each of said alkyls containing 1 to 6 carbon atoms.

    8.
    发明专利
    未知

    公开(公告)号:NL184663B

    公开(公告)日:1989-05-01

    申请号:NL7416110

    申请日:1974-12-11

    Applicant: OREAL

    Abstract: New dyestuffs are described for keratinic fibers which produce particularly luminous shades without the need for an oxidizing agent. These dyestuffs have the formula: (I) or a tautomeric form thereof wherein each of R1 and R4, which may be identical or different, represents a member selected from hydrogen, halogen, alkyl having 1 to 6 carbon atoms, alkoxy having 1 to 6 carbon atoms, acylamino and ureido; each of R2 and R3, which may be identical or different, represents a member selected from hydrogen, halogen, alkyl having 1 to 6 carbon atoms, alkoxy having 1 to 6 carbon atoms, amino, N-alkylamino, N-(hydroxyalkyl)-amino, N-(carbamyl-alkyl)-amino, acylamino and ureido, each of said alkyls containing 1 to 6 carbon atoms; each of R5 and R6, which may be identical or different, represents a member selected from hydrogen, halogen, alkyl containing 1 to 6 carbon atoms and alkoxy containing 1 to 6 carbon atoms, with the proviso that when R5 and R6 are both other than hydrogen at least one is in a meta-position relative to the NHR7 group; and R7 represents a member selected from alkyl, hydroxyalkyl, acylaminoalkyl, mesylaminoalkyl, carbamylalkyl, aminoalkyl, piperidinoalkyl and morpholinoalkyl, each of said alkyls containing 1 to 6 carbon atoms.

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