Naphthol derivatives and process for producing the same

Details Naphthol derivatives and process for producing the same Naphthol derivatives and process for producing the same

C - Chemistry, Metallurgy

07

C

C07C 235/66 (2006.01) C07C 65/11 (2006.01) C07C 65/24 (2006.01) C07C 69/94 (2006.01) C07C 275/54 (2006.01) C07C 311/46 (2006.01) C07D 209/88 (2006.01) C07D 235/26 (2006.01)

Patent

CA 2192542

Naphthol derivatives represented by general formula (I), wherein Y and Y' represent each -(CONH)n-X or -COR; X represents phenyl, naphthyl, anthraquinonyl, benzimidazolonyl or carbazolyl; R represents hydroxy, C1-6 alkoxy, halogeno, benzyloxy, phenyloxy or phenacyloxy; R2 represents hydrogen, an alkali metal, C1-6 alkyl, C1-6 acyl or phenylalkyl; Z represents hydrogen, halogeno, or one member selected from the group consisting of nitro, nitroso and amino and either of the naphthalene rings may be substituted thereby; and n represents an integer of 1 or 2; provided that when R is hydroxy, then R2 and Z do not represent hydrogen at the same time. The derivatives are usable as the starting material in the synthesis of dyes, pigments, photosensitive materials, etc.

L'invention concerne des dérivés du naphtol représentés par la formule générale (I). Dans ladite formule, Y et Y' représentent chacun -(CONH)¿n?-X ou -COR; X représente phényle, naphtyle, anthraquinonyle, benzimidazolonyle ou carbazolyle; R représente hydroxy, C¿1-6? alkoxy, halogéno, benzyloxy, phényloxy ou phénacyloxy; R¿2? représente hydrogène, un métal alcalin, C¿1-6? alkyle, C¿1-6? acyle ou phénylalkyle; Z représente hydrogène, halogéno, ou un élément sélectionné dans le groupe qui comprend nitro, nitroso et amino, l'un des anneaux de naphthalène pouvant être substitué par l'un de ces éléments; et n représente un nombre entier égal à 1 ou à 2; lorsque R représente hydroxy, il est impératif que R¿2? et Z ne représentent pas hydrogène simultanément. Les dérivés considérés peuvent servir de produits de départ dans la synthèse des colorants, des pigments, des matériaux photosensibles, etc.

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