- Synthesis method of N-hydroxynaphthalimide trifluoromethanesulfonate
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The invention relates to a synthesis method of N-hydroxylnaphthalimide trifluoromethanesulfonate, and belongs to the field of organic synthesis. The method comprises the following steps: (1) taking N-hydroxyl-1,8-naphthalimide and trifluoromethanesulfonyl chloride as raw materials, aromatic hydrocarbon as a solvent and an alkaline solution as a catalyst to carry out esterification reaction, and after the reaction is finished, extracting and concentrating to obtain an N-hydroxylnaphthalimide trifluoromethanesulfonate crude product; and (2) recrystallizing the N-hydroxylnaphthalimide trifluoromethanesulfonate crude product obtained in step (1) to obtain N-hydroxylnaphthalimide trifluoromethanesulfonate, wherein a mixed solution of methylbenzene and water is used as a recrystallization solvent in the recrystallization process. The synthesis method is high in efficiency and high in yield, and the prepared N-hydroxylnaphthalimide trifluoromethanesulfonate is high in purity.
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Paragraph 0017; 0020-0034
(2020/12/30)
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- PHOTOACID GENERATOR, AND RESIN COMPOSITION FOR PHOTOLITHOGRAPHY
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Provided is a non-ionic photoacid generator (A) expressed by general formula (1). R1 and R2 each independently represents an alkyl group having 1-18 carbons or a fluoroalkyl group having 1-18 carbons, an alkenyl group having 2-18 carbons, an alkynyl group
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Paragraph 0171; 0191; 0192
(2017/07/31)
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- PHOTOACID GENERATOR AND RESIN COMPOSITION FOR PHOTOLITHOGRAPHY
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PROBLEM TO BE SOLVED: To provide a nonionic photoacid generator having high photosensitivity to i-line, excellent heat-resistant stability, high compatibility with a hydrophobic material, and excellent solubility in a resist solvent. SOLUTION: A nonionic photoacid generator (A) represented by formula (1) below is provided. In the formula (1), R1 and R2 represent a hydrocarbon group having 1 to 18 carbon atoms, which may have a substituent (where a part of or all of hydrogen atoms may be replaced by fluorine atoms), and R1 and R2 may be identical or different from each other; and Y is a group represented by formula (2). COPYRIGHT: (C)2015,JPO&INPIT
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Paragraph 0138; 0142-0144
(2018/01/11)
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