- Method for synthesizing 2,4-dibenzenesulfonylphenol
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The invention discloses a method for synthesizing 2,4-dibenzenesulfonylphenol. The method includes: with o-dichlorobenzene being a solvent and trifluorosulfonate being a catalyst, firstly performing areaction on phenol and benzenesulfonic acid to synthesize o/p-sulfonylphenol; then adding benzene sulfonyl chloride to further perform a reaction for synthesizing the 2,4-dibenzenesulfonylphenol; finally adding butanol, performing cooling crystallization, and filtering and drying the product. The method employs feasible raw materials and is low in cost, is low in wastes, and is clean and environment-friendly.
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Paragraph 0017-0034
(2020/03/17)
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- Synthetic method of 2,4-bis(phenylsulfonyl)phenol
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The invention relates to the technical field of chemosynthesis, concretely to a synthetic method of 2,4-bis(phenylsulfonyl)phenol. The concrete synthetic method includes the following steps: adding phenol and benzenesulfonic acid into a reactor, adding po
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Paragraph 0015-0016
(2019/01/08)
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- Sulfonyl compound and thermal-sensitive recording medium using the same
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A thermal recording medium comprising a as a developer a sulfonyl compound represented by general formula (1) or a polyvalent metal salt thereof. where X represents H or a lower alkyl group, R1, R2 and R3 represent H, halogen atom, a hydroxyl group, a lower alkyl group or a cycloalkyl group, R4, R5 and R6 represent H, halogen atom, a lower alkyl group or a cycloalkyl group, and R7 represents H or where R4, R5 and R6 are as defined above. The thermal recording medium has a high sensitivity and a lower background blush during storage, and also has excellent stability against heating, moisture and plasticizer.
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