Pd-catalyzed dual annulation reaction to synthesize the norneocryptolepine derivatives involving the concerted construction of two central heterocycles is reported. The further methylation of the norneocryptolepine to afford its alkaloid analog neocryptolepine implies that synthesis of various neocryptolepine derivatives is feasible. The oxidative addition of Pd(0) is indicated as the key step to activate the
Borsche et al., Justus Liebigs Annalen der Chemie, 1942, vol. 550, p. 160,167
作者:Borsche et al.
DOI:——
日期:——
N-Bromosuccinimide as an efficient catalyst for the synthesis of indolo[2,3-b]quinolines
作者:Ramin Ghorbani-Vaghei、Seyedeh Mina Malaekehpoor
DOI:10.1016/j.tetlet.2012.06.125
日期:2012.8
The use of N-bromosuccinimide as a catalyst promoted the synthesis of polycyclic indolo[2,3-b]quinoline derivatives in good to high yields in the reactions of various aryl amines with indole-3-carbaldehyde at room temperature under mild conditions. (c) 2012 Elsevier Ltd. All rights reserved.
Facile convergent route to indoloquinolines
作者:Hari K. Kadam、Deesha D. Malik、Lalitprabha Salgaonkar、Ketan Mandrekar、Santosh G. Tilve
DOI:10.1080/00397911.2017.1359303
日期:2017.11.2
ABSTRACT A convergent route to indoloquinolines is developed through aldol condensation. This two-step method utilizes commercially available 2-oxoindole and o-nitrobenzaldehyde as starting materials. Chromatography-free method is accomplished for preparing several derivatives of indoloquinolines with desirable aromatic substitutions on indole as well as quinoline ring. GRAPHICAL ABSTRACT