Abstract
Efficient synthesis of 1-carbamatoalkyl-2-naphthols can be carried out in the presence of halogen-free Brønsted acidic ionic liquid, synthesized from 1,4-diaza-bicyclo[2.2.2]octane (DABCO) and 1,4-butanesulfonate. A wide range of aldehydes and carbamates easily undergo condensation with 2-naphthol to afford the desired products in good to excellent yields. The present methodology offers several advantages, such as a simple work-up procedure and short reaction times. The catalyst can be recycled and reused without substantial reduction in catalytic activities.
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We are grateful to Sistan and Baluchestan University Research Council for the partial support of this research.
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Shaterian, H.R., Hosseinian, A. Efficient synthesis of 1-carbamatoalkyl-2-naphthols using Brønsted acidic ionic liquid as reusable catalyst. Res Chem Intermed 40, 3011–3019 (2014). https://doi.org/10.1007/s11164-013-1147-7
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DOI: https://doi.org/10.1007/s11164-013-1147-7