A short divergent approach to highly substituted carbazoles and β-carbolines via in situ-generated diketoindoles
作者:Martin Untergehrer、Franz Bracher
DOI:10.1016/j.tetlet.2020.151597
日期:2020.3
an aza-alkylation/Michael addition cascadereaction developed by Kim and co-workers we have developed divergent cascadereactions leading to either highly substituted 1-hydroxycarbazoles, 3-hydroxycarbazoles or β-carbolines, starting from readily accessible ortho-arylsulfonylaminobenzaldehydes. Olefination of the aldehyde functionality by aldol condensation or Wittig olefination gave reactive enone intermediates