A novel ligand propan-2-one O-(p-tolylcarbamoyl) oxime (L7) has been developed to promote C(sp2)–H olefination of benzoic acids and phenylacetic acids via a palladium catalyst. With the subsequent lactonization of the olefinated products through 1,4-addition, highly monoselective cyclic lactone products of benzofuranones and benzopyrones were obtained in moderate to excellent yields. The DFT calculation
已开发出一种新型
配体 propan-2-one O -( p -tolylcarbamoyl) oxime ( L7 ) 以通过
钯催化剂促进
苯甲酸和
苯乙酸的C(sp 2 )-H 烯化。随后通过1,4-加成对烯烃产物进行内酯化,以中等至优异的产率获得
苯并呋喃酮和苯并
吡喃酮的高单选择性环状内酯产物。DFT计算表明,新型
配体propan-2-one O -( p -tolylcarbamoyl) oxime ( L7 ) 可以改善C-H活化反应,优雅地生成环状内酯产物。