Aldehydes as Carbon Radical Acceptors: Silver Nitrate Catalyzed Cascade Decarboxylation and Oxidative Cyclization toward Dihydroflavonoid Derivatives
作者:Wen-Chao Yang、Peng Dai、Kai Luo、Yi-Gang Ji、Lei Wu
DOI:10.1002/adsc.201601407
日期:2017.7.17
Silver nitrate‐catalyzed cascade decarboxylation and oxidative cyclization of α‐oxocarboxylic acids, alkenes, and aldehydes is demonstrated for the first time. With ammonium persulfate as the oxidant, the cascade reactions afford dihydroflavonoid derivatives as products in moderate to good yields, exhibiting a broad substrate tolerance. Control experiments indicated that the mechanism includes a radical
首次证明了硝酸银催化的α-氧代羧酸,烯烃和醛的级联脱羧和氧化环化。用过硫酸铵作为氧化剂,级联反应以中等至良好的产率提供了产物二氢类黄酮衍生物,表现出广泛的底物耐受性。对照实验表明,该机理包括以醛为碳自由基受体的自由基途径。