期刊
RUSSIAN JOURNAL OF ORGANIC CHEMISTRY
卷 56, 期 8, 页码 1476-1483出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1070428020050205
关键词
green chemistry; parabens; benzothiazole; ionic liquids; heteropoly acids; esterification; catalysis
资金
- Natural Science Foundation of Shanxi Province [2018JM7046]
A simple and green approach to the esterification ofp-hydroxybenzoic acid and aliphatic alcohols to obtain parabens was developed. First, two novel benzothiazole ionic liquids [HBth]H2PW12O40(IL1) and [HBth]H4PMo12O41(IL2) were synthesized with benzothiazole and heteropolyacids as starting materials. The synthesized ionic liquids were characterized by FTIR spectroscopy, TGA, PXRD analysis, and SEM. The application of IL1 and IL2 as catalysts for the synthesis of parabens was explored. The results showed that the ILs had a high catalytic activity in the synthesis of parabens, and, at the same time, they could be easily recovered and reused five times without loss of activity.
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