Patent ID: 11958802
Assignee: KAWASAKI KASEI CHEMICALS LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 4:
5. A method for producing the compound of formula (1) of claim 1, the method comprising:
reducing a 9,10-anthraquinone compound of formula (9):, , wherein X and Y are independently a hydrogen atom, a C1-8 alkyl group, or a halogen atom, to obtain a 9,10-dihydroxyanthracene compound of formula (2):, reacting the compound of formula (2) and a carboxylic acid compound of formula (4):, , wherein A is a C1-20 alkylene group optionally branched by an alkyl group, and Z is Cl, Br, or I, to prepare a 9,10-bis(hydroxycarbonylalkyleneoxy)anthracene compound of formula (5), , wherein A is a C1-20 alkylene group optionally branched by an alkyl group, and X and Y are independently a hydrogen atom, a C1-8 alkyl group or a halogen atom; and
reacting the compound of formula (5) and an esterifying agent of (6), (7), or (8):, R—OH (6), R-D (7), or, wherein R is a C1-20 alkyl group, which is optionally branched by the alkyl group, optionally as a cycloalkyl group or a cycloalkylalkyl group, the C1-20 alkyl group, alkyl group, cycloalkyl group, and cycloalkylalkyl group being optionally substituted by a hydroxy group, and one or more carbon atoms of the C1-20 alkyl group, alkyl group, cycloalkyl group, and cycloalkylalkyl group being optionally replaced by a non-peroxide oxygen atom
D is Cl, Br, or I, and R1 is a hydrogen atom or a C1-17 alkyl group, which is optionally branched by the alkyl group, optionally as a cycloalkyl group or a cycloalkylalkyl group, the C1-20 alkyl group, alkyl group, cycloalkyl group, and cycloalkylalkyl group being optionally substituted by a hydroxy group, and one or more carbon atoms of the C1-20 alkyl group, alkyl group, cycloalkyl group, and cycloalkylalkyl group being optionally replaced by a non-peroxide oxygen atom, provided that when R1 is a C1-17 alkyl group, the number of carbon atoms in R1 is smaller by 3 than the number of carbon atoms in R, excluding a case where the number of carbon atoms in R in the formula (1) is from 1 to 3.