Heterocycles from Ylides. Part XI. Synthesis of 2-Substituted Quinoline Derivatives
作者:Piero Dalla Croce、Giuseppe Cremonesi、Francesco Fontana、Concetta La Rosa
DOI:10.3987/com-07-s(w)78
日期:——
2-N-phenylsulfonylaminobenzaldehyde (1) with stabilized alkylidene phosphoranes (2) gives, through a Wittig condensation followed by reduction of intermediate alkenes and cyclization with PPA, quinoline derivatives (5).
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