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Org Lett. 2012 Mar 2;14(5):1190-3. doi: 10.1021/ol203229z. Epub 2012 Feb 14.

One-pot synthesis of pyranocoumarins via microwave-assisted pseudo multicomponent reactions and their molecular switching properties.

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1
Department of Chemistry, Tunghai University, No. 181, Section 3, Taichung Port Road, Taichung City 40704, Taiwan, Republic of China.

Abstract

Two new pyranocoumarins were synthesized via one-pot, microwave-assisted pseudo multicomponent condensations of coumarin and 4-methylquinoline to investigate their molecular switching properties. Both are light-sensitive and have a distinct change of color upon UV irradiation. The reaction can be reverted by treating the photogenerated products with imidazoline-functionalized magnetic nanoparticles, which can be swiftly recycled with an external permanent magnet.

PMID:
22332883
DOI:
10.1021/ol203229z
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