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Synthesis and reactions of some 4h-Pyrans using new Natural Catalyst

Author:

Awatef M. Elmaghraby, Ibrahim A Mousa, Rasha A. Nabil, and Abd El-Fattah A. Harb

Subject Area:

Physical Sciences and Engineering

Abstract:

In ethanolic medium and in the presence of the basalt and gabbro as new naturally reusable heterogeneous catalysts, an easy and efficient one-pot multicomponent protocol, 6-amino-5-cyano-4H-pyrans 1 were synthesized. Also, we report here that compounds 1 are useful and easily available as starting materials for the preparation of functionalized azines in a series of ring transformation in which the amino group furnishes the required nitrogen rings. Structures of the all isolated products 1 - 22 were established based on their elemental and spectroscopic analysis.

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