Isocyanurate containing periodic mesoporous organosilicas (ICS-PMO) without any post-modification was used as a novel heterogeneous catalyst for synthesis of tetrahydrobenzo[b]pyran derivatives via one‐pot three‐component condensation of aromatic aldehydes with malononitrile (or ethyl cyanoacetate) and dimedone. The catalyst was characterized by FT-IR Spectroscopy, TEM, SEM and BET techniques. Products were obtained in short reaction times with excellent yields in water under reflux conditions. The catalyst could be recycled and reused for several times without noticeably decreasing the catalytic activity.
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Nano-isocyanurate-Periodic mesoporous organosilica (PMO): a heterogeneous catalyst for three-component synthesis of tetrahydrobenzo[b]pyrans in water
Published: 30 October 2015 by MDPI in The 19th International Electronic Conference on Synthetic Organic Chemistry session General Organic Synthesis
Keywords: Green chemistry Heterogeneous catalyst; PMO; Tetrahydrobenzo[b]pyran derivatives; Synthesis in water