Electrophilic cyclization of o-acetoxy- and o-benzyloxyalkynylpyridines: an easy entry into 2,3-disubstituted furopyridines |
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| Authors: | Arcadi Antonio Cacchi Sandro Di Giuseppe Sabrina Fabrizi Giancarlo Marinelli Fabio |
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| Institution: | Dipartimento di Chimica Ingegneria Chimica e Materiali della Facoltà di Scienze, Università di L'Aquila, Via Vetoio, Coppito Due, I-67100 L'Aquila, Italy. arcadi@univaq.it |
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| Abstract: | reaction: see text] 2,3-Disubstituted furo3,2-b]pyridines, 2,3-disubstituted furo2,3-b]pyridines, and 2,3-disubstituted furo2,3-c]pyridines are readily prepared under mild conditions via the palladium-catalyzed cross-coupling of 1-alkynes with o-iodoacetoxy- or o-iodobenzyloxypyridines, followed by electrophilic cyclization by I(2) or by PdCl(2) under a balloon of carbon monoxide. |
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