Efficient Synthesis of Benzofuranones: N-Heterocyclic Carbene (NHC)/Base-Catalyzed Hydroacylation–Stetter–Rearrangement Cascade
作者:Mohan Padmanaban、Akkattu T. Biju、Frank Glorius
DOI:10.1021/ol2023483
日期:2011.10.21
A N-heterocyclic carbene/base-catalyzed cascade reaction leading to the formation of functionalized benzofuranones is reported. The reaction proceeds via an intramolecular hydroacylation of unactivated alkynes followed by an intermolecular Stetter reaction and a base-catalyzed chromanone to benzofuranone rearrangement.
据报道,N-杂环卡宾/碱催化的级联反应导致官能化苯并呋喃酮的形成。该反应通过未活化的炔烃的分子内加氢酰化,随后的分子间Stetter反应和碱催化的苯并二氢吡喃酮重排为苯并呋喃酮而进行。