Temperature-Controlled Desulfonylative Condensation of α‑Sulfonyl <i>o</i>‑Hydroxyacetophenones and 2‑Formyl Azaarenes: Synthesis of Azaaryl Aurones and Flavones
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Temperature-controlled intermolecular desulfonylative condensation of α-sulfonyl o-hydroxyacetophenones with 2-formyl azaarenes (pyridines and quinolones) provides azaaryl (pyridyl and quinolyl) aurones and flavones under warming and refluxing toluene reaction conditions via the formation of the intermediate of sulfonyl chroman-4-one. The uses of various solvents are investigated for facile and efficient transformation. A plausible mechanism is proposed.
创建时间：
2018-12-21
