Brønsted acidic ionic liquids catalyze the high-yield production of diphenolic acid/esters from renewable levulinic acid
HF Liu, FX Zeng, L Deng, B Liao, H Pang, QX Guo
Index: Liu, Hai-Feng; Zeng, Fan-Xin; Deng, Li; Liao, Bing; Pang, Hao; Guo, Qing-Xiang Green Chemistry, 2013 , vol. 15, # 1 p. 81 - 84
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Citation Number: 39
Abstract
The high-yielding synthesis of diphenolic acid (DPA) using Brønsted acidic ionic liquids (BAILs) has been demonstrated in this study. Importantly, p, p′-DPA was obtained as the preferential product over o, p′-DPA with an isomer ratio over 100. Moreover, diphenolic esters were also prepared in high yield through a one-pot method.
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