Ordered microporous materials with well-defined pore sizes are proven as active green catalysts for regioselective synthesis of pyrimidobenzimidazoles. Five kinds of zeolites were studied and showed quite different catalytic activities due to their wide acid sites distributions and various pore structures. The structure of the product was confirmed by NOE and X-ray studies.(Figure not available: see fulltext.)
Research on Chemical Intermediates – Springer Journals
Published: Oct 25, 2013
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