Tin Pyrophosphate (SnP2O7): As a Novel Heterogeneous and Highly Efficient Catalyst for the One Pot-Three Component Synthesis of Tetrahydrobenzo[b]Pyran and Dihydropyran[c]Chromene Derivatives

Document Type : Research Article

Authors

1 Laboratory of Organic Chemistry, Catalysis, and Environment. University of Ibn Tofail, Faculty of Science, Kenitra, MOROCCO

2 Laboratory of Organic Chemistry, Catalysis, and Environment. University of Ibn Tofail, Faculty of Science, Po Box 133, 14000. Kenitra, Morocco

Abstract

The tin pyrophosphate (SnP2O7) was synthesized from the modification of mono-ammonium phosphate (MAP) by tin chloride (SnCl2). This solid was used as a heterogeneous catalyst for the one-pot multicomponent synthesis of tetrahydrobenzo[b]pyran and dihydropyrano[3,2-c]chromenes derivatives under green reaction conditions. This synthetic protocol offers several advantages such as short reaction times (8-15 min), high product yields (85-97%), easy work‐up procedure, and easy catalyst separation from the reaction mixture. In addition, SnP2O7 can be recycled for up to five cycles without a significant loss of catalytic reactivity. The XRD and IR spectra confirm the stability and heterogeneity of SnP2O7 in the reaction medium even after its reuse.

Keywords

Main Subjects

References

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