Unprecedented Bridged Annulation Approach to the Construction of 5,6-Dihydro-4<i>H</i>-benzo[<i>kl</i>]acridines
作者:Atul Goel、Salil Pratap Singh、Amit Kumar、Ruchir Kant、Prakas R. Maulik
DOI:10.1021/ol901916p
日期:2009.11.19
methodology for the synthesis of 5,6-dihydro-4H-benzo[kl]acridines has been developed via Michael addition of a conjugate base of 9-methyl-3,4-dihydroacridin-1(2H)-one to various cyclic or acyclic α,β-unsaturated carbonyl/nitrile compounds under mild conditions at room temperature in a short time. To the best of our knowledge, such a general bridged annulation for the synthesis of fused N-heterocycles