Patent Number: 6,252,104

Title: Naphthol derivatives and process for producing the same

Abstract: A naphthol derivative represented by the general formula (I), [wherein Y and Y' indicate --(CONH).sub.n --X or --COR; X is a phenyl group, a naphthyl group, an anthraquinonyl group, a benzimidazolonyl group or a carbazolyl group; R is a hydroxyl group, an alkoxy group having 1 to 6 carbon atoms, a halogen atom, a benzyloxy group, a phenyloxy group or a phenacyloxy group; R.sub.2 is a hydrogen atom, an alkaline metal, an alkyl group having 1 to 6 carbon atoms, an acyl group having 1 to 6 carbon atoms or a phenylalkyl group; Z is a group selected from the group consisting of a hydrogen atom, a halogen atom, a nitro group, a nitroso group and an amino group (Z may be substituted on any ring of the naphthalene ring); and n is an integer of 1 or 2; provided that R.sub.2 and Z do not simultaneously indicate a hydrogen atom when both R simultaneously indicate a hydroxyl group], and a process for producing the same. This naphthol derivative can be used as raw materials for synthesis, such as dyes, pigments, photosensitive materials and the like. ##STR1##

Inventors: Ueno; Ryuzo (Hyogo, JP), Ito; Shigeru (Hyogo, JP), Minami; Kenji (Osaka, JP), Kitayama; Masaya (Hyogo, JP)

Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo

International Classification: C07C 311/46 (20060101); C07C 235/00 (20060101); C07C 311/00 (20060101); C07C 275/00 (20060101); C07C 275/54 (20060101); C07C 235/66 (20060101); C07D 209/00 (20060101); C07D 235/00 (20060101); C07D 235/26 (20060101); C07D 209/88 (20060101); C07C 65/24 (20060101); C07C 65/00 (20060101); C07C 69/94 (20060101); C07C 69/00 (20060101); C07C 65/11 (20060101); C07C 229/00 ()

Expiration Date: 06/26/2018