Reactions of oxazolones with umbelliferones and other selected enolcarbonylic substrates are reported. An original synthetic protocol was defined which, under solventless conditions, allows excellent control of chemo- and regioselectivity and favours the formation of compounds that would otherwise be inaccessible. Depending on the substrate employed, this procedure made it possible to obtain O- and C-acylation and cycloaddition products.
Solventless reactions of 5(4H)-oxazolones with Umbelliferones and selected enolcarbonyl compounds
DI DONNA, Leonardo;NAPOLI, Anna Maria Carmela Natale Vittoria;SINDONA, Giovanni
2003-01-01
Abstract
Reactions of oxazolones with umbelliferones and other selected enolcarbonylic substrates are reported. An original synthetic protocol was defined which, under solventless conditions, allows excellent control of chemo- and regioselectivity and favours the formation of compounds that would otherwise be inaccessible. Depending on the substrate employed, this procedure made it possible to obtain O- and C-acylation and cycloaddition products.File in questo prodotto:
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