Zn( L‐proline)2 as a powerful and reusable organometallic catalyst for the very fast synthesis of 2‐amino‐4H‐benzo[g]chromene derivatives under solvent‐free conditions |
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| Authors: | Behrooz Maleki Saeed Babaee Reza Tayebee |
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| Institution: | Department of Chemistry, Hakim Sabzevari University, Sabzevar, Iran |
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| Abstract: | An efficient route for the synthesis of 2‐amino‐4H‐benzog]chromenes via a three‐component coupling reaction of aldehydes, malononitrile and 2‐hydroxy‐1,4‐naphthaquinone in the presence of Zn( L ‐proline)2 is reported. High yields, short reaction times, non‐toxicity and recyclability of the catalyst, and easy work‐up are the main merits of this protocol. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | Zn( L‐proline)2 2‐amino‐4H‐benzo[g]chromenes aldehydes malononitrile 2‐hydroxy‐1 4‐naphthaquinone recyclable catalyst |
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