2001 furan derivatives

furan derivativesR 0060

12 - 108Selective Synthesis of Unsymmetrical 3,4-Disubstituted and 4-Substituted 2(5H)-Furanones. — The readily prepared 3,4-dibromo-2(5H)-furanone (II) undergoes a regioselective Pd-catalyzed coupling witharylstannanes (III). The resulting 4-aryl-3-bromo derivatives (IV) may be fur-ther coupled to unsymmetrically 3,4-disubstituted derivatives (VI) or reducedto 4-substituted furanones (VII). — (ROSSI, RENZO; BELLINA, FABIO;RAUGEI, ELISA; Synlett (2000) 12, 1749-1752; Dip. Chim. Chim. Ind., Univ.Pisa, I-56126 Pisa, Italy; EN)

1