Bis(4-hydroxy-3,5-dimethylphenyl)methanone synthesis

3synthesis methods

Product Name:Bis(4-hydroxy-3,5-dimethylphenyl)methanone
CAS Number:92005-15-7
Molecular formula:C17H18O3
Molecular Weight:270.32

5384-21-4 Synthesis

5384-21-4
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Bis(4-hydroxy-3,5-dimethylphenyl)methanone

92005-15-7
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Yield:-

Reaction Conditions:

in methanol;dichloromethane;argon;ethyl acetate;

Steps:

7.1 (1)

(1) Synthesis of 4,4'-dihydroxy-3,3',5,5'-tetramethylbenzophenone To 20 ml methanol was dissolved 500 mg/2.0 mmol of bis(4-hydroxy-3,5-dimethylphenyl)methane, and 886 mg/4.0 mmol of dicyanodichloroquinone was added to the solution at once in a stream of argon. After stirring at room temperature for 1 hour, the solvent was distilled off under reduced pressure. The residue was dissolved in ethyl acetate, and the insoluble matter was separated by filtration and re-concentrated. The resulting crude product was purified by silica gel column chromatography using methylene chloride for the eluding solution to obtain 230 mg of the desired 4,4'-dihydroxy-3,3',5,5'-tetramethylbenzophenone. MS: 270 (M⁺), ¹ H-NMR (CDCl₃ /DMSO-d⁶): δ2.29 (12H, s), 7.41 (4H, s), 7.96 (2H, s).

References:

US6087502,2000,A

576-26-1 Synthesis

576-26-1
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References

2,5-Cyclohexadien-1-one, 4-[bis(4-hydroxy-3,5-dimethylphenyl)methylene]-2,6-dimethyl-

29237-05-6
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92005-15-7
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References