Formation of the unexpected 3-alkylated flavonoids in the alkylation of B-ring substituted 5,7-dihydroxy flavones
作者:Cai-Ling Wang、Xing Zheng、Wei-Dong Meng、Hong-Qi Li、Feng-Ling Qing
DOI:10.1016/j.tetlet.2005.05.144
日期:2005.8
Treatment of B-ring substituted 5,7-dihydroxy flavones with alkyl halides in the presence of potassium carbonate gave unexpected 3-alkylated flavonoids. Related experiments were carried out to explain the formation of 3-alkylated flavonoids and a ring opening followed by alkylation and ring closure mechanism was proposed. (c) 2005 Elsevier Ltd. All rights reserved.