Gallium(III) chloride-catalyzed three-component coupling of naphthol, alkyne and aldehyde: a novel synthesis of 1,3-disubstituted-3H-benzo[f] chromenes |
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| Authors: | JS Yadav BV Subba Reddy Swapan Kumar Biswas Sandip Sengupta |
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| Institution: | aDivision of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India |
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| Abstract: | Three-component coupling of naphthol, alkyne and aldehyde has been achieved in the presence of 10 mol % gallium(III) chloride in toluene under reflux conditions to afford the corresponding 1,3-disubstituted-3H-benzof]chromenes in good yields. This is the first example on the preparation of chromenes from naphthol, alkyne and aldehyde. |
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| Keywords: | Gallium(III) chloride Three-component reaction Chromene Heterocycles |
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