Role of aurone ligands in microwave enhanced Mn (II) and Co (II) catalyzed dehydrogenative coupling reaction: An efficient ligand for the synthesis of quinoline,pyridine, and pyrrole |
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| Authors: | Shachi Mishra Chandan Prakash Bhartendu Pati Tripathi |
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| Institution: | 1. Department of Chemistry, Jai Prakash University, Chapra, Bihar, India;2. Department of Chemistry, P. N. College Parsa (A Constituent Unit of J.P University Chapra), Saran, Bihar, India;3. Department of Chemistry, GDC Haripur Nihastha, Raebareli, Uttar Pradesh, India |
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| Abstract: | The role of new series of phosphine-free aurone ligands have been investigated in microwave-enhanced Mn (II) and Co (II) dehydrogenative coupling reactions. Various heterocyclic compounds such as Quinoline, pyridine, and pyrrole have been synthesized and characterized by NMR spectroscopy. The synthesized ligands ( L1 – L4 ) with Mn(II) and Co (II) salt showed excellent catalytic activity and proved to be very effective for the dehydrogenative coupling reaction. This synthetic method involves the in-situ formation of a metal ligand complex that was analyzed by mass spectrometry. A broad range of substrates including aliphatic ketone, heterocycles, and sterically hindered Ketone coupling partners are well tolerated in the developed protocol. |
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