Method of preparing a thiomethylphenol derivative
AssigneeKorea Kumho Petrochemical Co., Ltd.
InventorsKee Yoon Roh, Sang Hun Jang, Jung Hei Choi
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Abstract
A method of preparing a thiomethylphenol derivative is disclosed, the method including: (a) carrying out a primary reaction of a phenol derivative represented by the following Chemical Formula 2, a mercaptan derivative represented by R4SH, and paraformaldehyde at a reaction temperature T1 under conditions in which a heterocyclic base having 3 to 10 carbon atoms and an acid are simultaneously present; and (b) carrying out a secondary reaction at a reaction temperature T2 to prepare a thiomethylphenol derivative represented by the following Chemical Formula 1, wherein T1<T2 is satisfied.
Claims17
A method of preparing a thiomethylphenol derivative, comprising:
- (a) carrying out a primary reaction of a phenol derivative represented by the following Chemical Formula 2, a mercaptan derivative represented by R4SH, and paraformaldehyde at a reaction temperature T1 under conditions in which a heterocyclic base having 3 to 10 carbon atoms and an acid are simultaneously present;
- and
- (b) carrying out a secondary reaction at a reaction temperature T2 to prepare a thiomethylphenol derivative represented by the following Chemical Formula 1;
- wherein 95° C.<T1+5° C.<T2<120° C. is satisfied,
- wherein,
- R1 and R2 are each independently selected from hydrogen, deuterium, a C1 to C16 straight or branched alkyl group, a C5 to C16 cycloalkyl group or a C5 to C16 aromatic-containing alkyl group, and —CH2SR3,
- R3 and R4 are each independently selected from a C1 to C16 straight or branched alkyl group, a C5 to C16 cycloalkyl group, or a C5 to C16 aromatic-containing alkyl group,
- R11 and R22 are each independently selected from hydrogen, deuterium, a C1 to C16 straight or branched alkyl group, a C5 to C16 cycloalkyl group or a C5 to C16 aromatic-containing alkyl group,
- n is 0 or 1.
Dependencies are inferred from the claim text.