Acyl Radical Smiles Rearrangement To Construct Hydroxybenzophenones by Photoredox Catalysis
作者:Junzhao Li、Zhengyi Liu、Shuang Wu、Yiyun Chen
DOI:10.1021/acs.orglett.9b00353
日期:2019.4.5
hydroxybenzophenones under mild and metal-free conditions is reported. Using the dual catalysis of hypervalent iodine(III) reagents and organophotocatalysts, ketoacids readily generate acyl radicals and undergo 1,5-ipso addition. This method can construct electron-deficient and electron-rich hydroxybenzophenones with excellent chemoselectivity and on gram scale. The performance of the reaction in neutral aqueous conditions
据报道,在温和且无金属的条件下,第一个可见光诱导的酰基自由基Smiles重排将联芳基醚转化为羟基二苯甲酮。使用高价碘(III)试剂和有机光催化剂的双重催化,酮酸很容易产生酰基自由基并进行1,5- ipso加成反应。该方法可以构建具有优异的化学选择性和克规模的缺电子和富电子的羟基二苯甲酮。在中性水性条件下反应的进行为将来的生物分子应用保留了潜力。