Iridium(I)-Catalyzed Coupling of (Z)-2-En-4-yn-1-ols with Activated Alkynes: A New Synthetic Route to 7-Oxanorbornadienes
作者:Alba E. Díaz-Álvarez、Pascale Crochet、Victorio Cadierno
DOI:10.1002/adsc.201000408
日期:2010.10.4
Taking advantage of the ability shown by the iridium(I) dimer [Ir(μ-Cl)(COD)}2] to promote the cycloisomerization of (Z)-enynols into furans, an unprecedented syntheticroute to 7-oxanorbornadienes has been developed just by performing the catalytic reactions in the presence of activatedalkynes. The process, which proceeds under solvent-free conditions, furnishes the bicyclic alkenes in good yields