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Study on the Hydration of α-Pinene Catalyzed by α-Hydroxycarboxylic Acid-Boric Acid Composite Catalysts.
| Content Provider | Europe PMC |
|---|---|
| Author | Meng, Zhonglei Qin, Rongxiu Wen, Rusi Li, Guiqing Liang, Zhongyun Xie, Junkang Yang, Zhangqi Zhou, Yonghong |
| Editor | Capriati, Vito |
| Copyright Year | 2023 |
| Abstract | In this study, seven types of α-hydroxycarboxylic acids were selected to form composite catalysts with boric acid, and their catalytic properties were studied using the catalytic hydration of α-pinene. The results showed that the composite catalyst of boric acid and tartaric acid had the highest catalytic activity. With an α-pinene, water, acetic acid, tartaric acid, and boric acid mass ratio of 10:10:25:0.5:0.4, the reaction temperature was 60 °C, the reaction time was 24 h, the conversion of α-pinene was 96.1%, and the selectivity of terpineol was 58.7%. The composite catalyst composed of boric acid and mandelic acid directly catalyzed the hydration of α-pinene in the absence of a solvent. Under the optimal conditions, the conversion of α-pinene reached 96.1%, and the selectivity of terpineol was 55.5%. When the composite catalyst catalyzed α-pinene to synthesize terpineol in one step, the terpineol was optically active, and terpineol synthesized using the two-step method with the dehydration of p-menthane-1,8-diol monohydrate was racemic. These composite catalysts may offer good application prospects in the synthesis of terpineol. |
| Journal | Molecules |
| Volume Number | 28 |
| DOI | 10.3390/molecules28073202 |
| PubMed Central reference number | PMC10096544 |
| Issue Number | 7 |
| PubMed reference number | 37049965 |
| e-ISSN | 14203049 |
| Language | English |
| Publisher | Molecular Diversity Preservation International (MDPI) |
| Publisher Date | 2023-04-04 |
| Access Restriction | Open |
| Subject Keyword | α-hydroxycarboxylic acid–boric acid complexes green catalyst hydration of α-pinene solvent-free terpineol p-menthane-1,8-diol monohydrate |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry Medicine Chemistry Drug Discovery Pharmaceutical Science Analytical Chemistry Molecular Medicine Organic Chemistry |
