Nucleophilic Addition of Hetaryllithium Compounds to 3-Nitro-1-(phenylsulfonyl)indole: Synthesis of Tetracyclic Thieno[3,2-c]-δ-carbolines
作者:Gordon W. Gribble、Philip E. Alford、Tara L. S. Kishbaugh
DOI:10.3987/com-09-s(s)99
日期:——
3-Nitro-1-(phenylsulfonyl)indole undergoes addition of aryl- and hetaryllithium nucleophiles to produce 2-substituted-3-nitroindoles. Mild reductive―acylation provides excellent access to 3-amido-2-hetarylindoles from which new thieno[3,2-c]-δ-carbolines are synthesized by cyclodehydration.
A versatile synthetic route to 11H-indolo[3,2-c]isoquinolines
作者:Ji Qu、Naresh Kumar、Mahiuddin Alamgir、David StC. Black
DOI:10.1016/j.tetlet.2009.07.107
日期:2009.10
A wide variety of indoloisoquinoline derivatives are prepared from the acid-catalyzed cyclization of 3-amido-2-phenylindoles, which in turn were obtained from the Beckmann rearrangement of 2-phenylindole-3-oximes. (C) 2009 Elsevier Ltd. All rights reserved.
Unusual formation of novel highly substituted N-(3-indolyl)-imidazoles
作者:Ji Qu、Mohan Bhadbhade、Naresh Kumar、David StC. Black
DOI:10.1016/j.tet.2018.11.007
日期:2018.12
Treatment of 3-amidoindoles with phosphoryl chloride leads to a dimerization of the resulting iminochlorides to form tetrasubstituted imidazoles in moderate yield. One indole ring undergoes ring-opening to allow the formation of the imidazole ring. This strategically simple synthesis considerably expands the scope of delivering N-indolylimidazoles.
615. 1 : 2-Disubstituted 3-aminoindoles. Part II. The preparation of indolo(3′ : 2′–3 : 4)isoquinolines and of a new type of cyanine dye derived therefrom