Synthesis of 2-acetyl trisubstituted furans via copper-mediated deacylation cleavage of unstrained C(sp3)–C(sp2) bonds†
Abstract
A simple and convenient approach for the construction of 2-acetyl trisubstituted furans with acetylenic ketones and 1,3-dicarbonyl compounds via Cu-mediated unstrained C(sp3)–C(sp2) bond cleavage has been described. Mechanistic studies indicate that this transformation proceeds via a sequence of addition, cyclization, and C–C bond cleavage to afford the corresponding products in moderate to good yields.