Synthesis and Characterization of a New Zwitterionic Phthalocyanine for Efficient Synthesis of Polyhydroquinoline and Chromene Derivatives

This study presents the synthesis and characterization of a new, recyclable, and thermally stable heterogeneous catalyst for the efficient synthesis of polyhydroquinoline and chromene derivatives. The catalyst was characterized using various techniques, including UV spectroscopy, FT-IR, TGA, DTG, SEM, XRD, ICP Spectroscopy, and CHN analysis. The successfully designed phthalocyanine incorporates both Br & oslash;nsted and Lewis acid functionality, along with zwitterionic properties. It was effectively utilized in the synthesis of polyhydroquinoline and chromene derivatives. The methodology offers several advantages, such as a simple procedure, excellent yields, and a short reaction time. The findings from this research provide valuable insights into formulating and advancing new catalysts for significant organic reactions. Assessment of the catalytic performance of [VO(TPPACH2CO2H)]Cl in the Hantzsch multicomponent reaction (MCR). Assessing the catalytic performance of [VO(TPPACH2CO2H)]Cl in the synthesis of 2-amino-4H-chromene derivatives. Retrieval of the [VO(TPPACH2CO2H)]Cl catalyst in the synthesis of polyhydroquinoline and chromene derivatives. Comparison of the proposed catalyst with the previously reported catalysts for the synthesis of polyhydroquinoline and chromene derivatives. image