H
Hiriyakkanavar Junjappa
Researcher at Indian Institute of Technology Kanpur
Publications - 349
Citations - 4229
Hiriyakkanavar Junjappa is an academic researcher from Indian Institute of Technology Kanpur. The author has contributed to research in topics: Ketene & Aryl. The author has an hindex of 30, co-authored 349 publications receiving 4102 citations. Previous affiliations of Hiriyakkanavar Junjappa include Northeastern University & Jawaharlal Nehru Centre for Advanced Scientific Research.
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α-Oxoketene-S,S-, N,S- and N,N-acetals: Versatile intermediates in organic synthesis
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Heteroannulation of nitroketene N,S-arylaminoacetals with POCl3: a novel highly regioselective synthesis of unsymmetrical 2,3-substituted quinoxalines.
TL;DR: A novel regioselective route for the synthesis of substituted and fused 3-chloro-2-(methylthio)quinoxalines through POCl3-mediated heteroannulation of a range of alpha-nitroketene N,S-anilinoacetals has been reported.
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Reaction of α-Oxoketene-N,S-arylaminoacetals with Vilsmeier Reagents: An Efficient Route to Highly Functionalized Quinolines and Their Benzo/Hetero-Fused Analogues‡
TL;DR: A simple, highly efficient, and regioselective synthesis of functionalized quinolines through Vilsmeier cyclization of a variety of alpha-oxoketene-N,S-anilinoacetals has been reported.
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Regioselective synthesis of 1-aryl-3,4-substituted/annulated-5-(methylthio)pyrazoles and 1-aryl-3-(methylthio)-4,5-substituted/annulated pyrazoles.
TL;DR: Highly efficient and regioselective synthesis of 1-aryl-3,4-substituted/annulated-5-(methylthio)pyrazoles and 1- Daryl-3-( methylthio)-4,5-subStituted /annulated pyrazoles has been reported via cyclocondensation of arylhydrazines with either alpha-oxoketene dithioacetals or beta-oxodithioesters.
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Efficient routes to pyrazolo[3,4-b]indoles and pyrazolo[1,5-a]benzimidazoles via palladium- and copper-catalyzed intramolecular C-C and C-N bond formation.
TL;DR: Efficient synthetic routes to pyrazolo[3,4-b]indoles and pyrazol[1,5-a]benzimidazoles via intramolecular palladium- and copper-catalyzed cyclization of 1-aryl/1-unsubstituted 5-(2-bromoanilino)pyrazole precursors via intramsolecular C-C and C-N bond formation have been reported.