Benzoazepine-Fused Isoindolines via Intramolecular (3 + 2)-Cycloadditions of Azomethine Ylides with Dinitroarenes
作者:Steven M. Wales、Daniel J. Rivinoja、Michael G. Gardiner、Melissa J. Bird、Adam G. Meyer、John H. Ryan、Christopher J. T. Hyland
DOI:10.1021/acs.orglett.9b01580
日期:2019.6.21
N-substituted α-amino acids to form unprecedented benzoazepine-fused isoindolines. The reaction proceeds via a dearomatization/rearomatization sequence involving an intramolecular (3 + 2)-cycloaddition between the in situ formed azomethine ylide and the dinitroarene. Various glycine derivatives are tolerated as well as branched substrates based on cyclic, α-mono-, and α,α-disubstituted amino acids, giving