Title:
インドール化合物、酸化染料中間体、インドール化合物の製造方法及び酸化染料含有水溶液の製造方法
Document Type and Number:
Japanese Patent JP7437984
Kind Code:
B2
Abstract:
To provide a novel indole compound to be a precursor of 5,6-dihydroxy indole, which has the nature of being easily oxidized and is, therefore, limited in its methods for production, a method for producing the indole compound, and a method for producing an oxidation dye-containing solution from the indole compound.SOLUTION: According to a method, a compound of formula (III) and boron trihalide are reacted to synthesize an indole compound, which is a boric acid ester of a 5,6-dihydroxy indole derivative. R1 and R2 independently represent H, a C1-C10 substituted/unsubstituted alkyl group, a C6-C10 substituted/unsubstituted aryl group, an oxygen-containing group, or a halogen atom; R3 is H, or a C1-C10 substituted/unsubstituted alkyl group; R4 and R5 independently represent H or a C1-C12 aliphatic group, or integrally represent a C1-C4 alkylene group.SELECTED DRAWING: None
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Inventors:
Kenichi Goto
Shigeru Mio
Shigeru Mio
Application Number:
JP2020043479A
Publication Date:
February 26, 2024
Filing Date:
March 12, 2020
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C08G79/08; C07F5/04; C09B67/44; D06P1/32
Domestic Patent References:
| JP11147812A | ||||
| JP2009527546A | ||||
| JP2016510764A | ||||
| JP2006160670A | ||||
| JP61217061A |
Other References:
田中豊助,有機ホウ素化合物の化学,有機合成化学協会誌,1964年,Vol.22(10),p.806-815
Attorney, Agent or Firm:
Patent Attorney Corporation Taiyo International Patent Office
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