Natural pozzolan as a novel heterogeneous catalyst for the synthesis of alkylaminophenols

The development of sustainable catalysts from natural materials, such as pozzolan, represents a promising strategy in green chemistry. The pozzolan studied was subjected to multi-technique characterization (XRD, FTIR, BET, and SEM) to establish its structural and textural properties. The results obtained highlight the effectiveness of this material as a catalyst for the Petasis reaction, allowing the synthesis of a diversity of alkylaminophenols with yields reaching 93%. The reaction was successfully carried out on a gram scale, confirming the potential of pozzolan as a heterogeneous catalyst. This catalyst, which is recyclable and inexpensive, represents an attractive alternative for large-scale applications while respecting the environment.