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Regioselective Synthesis of Aurone Derivatives via PBu3‐Catalyzed Cyclization of 2‐Alkynoylphenols |
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| Authors: | Changqing Liu Zhannan Zhang Jitan Zhang Xing Liu Meihua Xie |
| Affiliation: | 1. Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Key Laboratory of Molecular Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China;2. Department of Chemistry, Bengbu Medical College, Bengbu, Anhui 233030, China |
| Abstract: | Aurone derivatives were synthesized in good to high yields by PBu3‐catalyzed intramolecular 5‐exo cyclization of 2‐alkynoylphenols. The reaction proceeds in high regioselectivity without forming 6‐endo cyclization products. |
| Keywords: | 2‐alkynoylphenol PBu3 intramolecular cyclization aurone |