57142-64-0Relevant articles and documents
Environmental-friendly method for synthesizing acyloxy substituted styrene compound
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Paragraph 0046; 0047, (2019/01/07)
The invention relates to an environmental-friendly method for synthesizing an acyloxy substituted styrene compound. The method comprises the following steps of S1, at the temperature of being lower than or equal to 0 DEG C, performing reaction on the hydroxyl substituted styrene compounds, basic catalysts, a first part of polymerization inhibitors and acetylation reagents in organic solvents for afirst preset time period to obtain a first reaction mixture; S2, filtering the first reaction mixture; performing filtering to obtain a filter cake; adding lower alcohol and the second part of polymerization inhibitors into obtained filter liquid; performing reaction for a second preset time period to obtain a liquid mixture containing acyloxy substituted styrene compound; concentrating the liquid mixture; recovering the at least one part of organic solvents to obtain the acyloxy substituted styrene compound. The method provided by the invention has the advantages that organic solvents can bedirectly recovered; in addition, in the process of synthesizing the acyloxy substituted styrene compound, water is not used, so that waste water cannot be generated; the environment protection is facilitated.
METHOD FOR THE SYNTHESIS AND PRODUCTION OF ALKENYL COMPOUND
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, (2018/09/20)
PROBLEM TO BE SOLVED: To provide a method for producing an efficient alkenyl compound conveniently and inexpensively. SOLUTION: A first compound represented by formula (1) reacts with a second compound represented by formula (3), in the presence of amino acid, in solvent containing amine, in a range of 50-200°C, to produce an alkenyl compound represented by formula (A) [where R1 is hydrogen or an optionally substituted C1-C30 alkyl group, R2 is a carboxyl group or the like, R3 and R4 are hydrogen, an optionally substituted C1-C30 alkyl group or the like]. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPOandINPIT