Photocatalyzed synthesis of isochromanones and isobenzofuranones under batch and flow conditions
作者:Manuel Anselmo、Lisa Moni、Hossny Ismail、Davide Comoretto、Renata Riva、Andrea Basso
DOI:10.3762/bjoc.13.143
日期:——
Photocatalyzed reactions of 2-(alkoxycarbonyl)benzenediazonium tetrafluoroborates with various alkenes afforded isochromanones in good yields, according to a mechanism that was investigated. The advantage of using highly soluble esters rather than carboxylic acids as starting compounds became evident when the reactions were performed under flow conditions. On the other hand, when 2-vinylbenzoic acid
根据所研究的机理,四氟硼酸2-(烷氧基羰基)苯重氮鎓与各种烯烃的光催化反应以良好的收率提供了异苯并二氢吡喃酮。当在流动条件下进行反应时,使用高可溶性酯而不是羧酸作为起始化合物的优势变得明显。另一方面,当使用2-乙烯基苯甲酸衍生物作为试剂时,与前所未有的苯并[e] [1,3] oxazepin-1(5H)-酮一起获得了异苯并呋喃酮,后者是通过掺入溶剂(乙腈)。