Abstract
A concise and efficient route for the synthesis of indole derivatives having propellane structure at position 3 by simple regioselective one-pot reaction of ninhydrin, malononitrile, tryptamine, and β-dicarbonyl compounds was developed. This protocol provides an alternative method for application in combinatorial and parallel synthesis in drug discovery. The value of this method lies in its simplicity, regioselectivity, and good yields. The structures of new synthesized compounds were corroborated spectroscopically (IR, 1H- and 13C-NMR, and EI-MS). A plausible mechanism for this type of reaction is proposed (Scheme 2).
Keywords: Indole, propellane, tryptamin, ninhydrin, one-pot reaction.
Graphical Abstract
Related Books
Advances in Organic Synthesis
The Synthetic Methods, Structures, and Properties of the Ca-C σ Bond Organocalcium Containing Compounds
Advances in Organic Synthesis
Chemistry of Bipyrazoles: Synthesis and Applications
Advances in Organic Synthesis
Advanced Nanocatalysis for Organic Synthesis and Electroanalysis
Advances in Organic Synthesis
Advances in Organic Synthesis
24
2