Indium Trichloride (InCl3) Catalyzed Synthesis of Fused 7‐Azaindole Derivatives Using Domino Knoevenagel‐Michael Reaction |
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Authors: | Sakharam B. Dongare Hemant V. Chavan Datta N. Surwase Pravin S. Bhale Yoginath B. Mule Babasaheb P. Bandgar |
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Affiliation: | 1. School of Chemical Sciences, Solapur University, Solapur‐413 255, Maharashtra, India;2. Department of Chemistry, A.S.P. College, Devrukh, Dist‐Ratnagiri‐415 804, Maharashtra, India |
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Abstract: | An efficient and high yielding methodology developed for the synthesis of fused 7‐azaindole derivatives via one pot multicomponent assembly process of cyclic 1,3‐dicarbonyls with substituted aldehydes and 5‐amino‐1‐tert‐butyl‐1H‐pyrrole‐3‐carbonitrile. The transformation occurs via domino Knoevenagel‐ Michael reaction followed by intramolecular cyclization in the presence of catalytic amount of InCl3 (10 mol %). Mild reaction conditions, easy isolation of products, and good to excellent yields in a shorter period of time are the silent features of present methodology. Structures of all the newly prepared compounds have been corroborated by various spectroscopic methods. |
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Keywords: | Indium trichloride Fused 7‐azaindoles Knoevenagel condensation Michael addition Domino reaction |
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