Palladium-Catalyzed Approach to Substituted Dihydrofurans, Cyclopenta[<i>b</i>]furans and Tetrahydrobenzofurans
作者:Shinji Tanimori、Mitsunori Kirihata
DOI:10.1055/s-2006-950376
日期:2007.1
The reaction of a symmetrical allylic dicarbonate or diacetate with a variety of β-keto esters in the presence of a palladium catalyst gave 2-substituted 5-vinyl-4,5-dihydrofuran-3-carboxylates, 4,6a-dihydro-3aH-cyclopenta[b]furan-3-carboxylates, and 3a,4,5,7a-tetrahydrobenzofuran-3-carboxylates in moderate to good yields.
在钯催化剂存在下,对称烯丙基二碳酸酯或二乙酸酯与多种β-酮酯反应,以中等至良好的收率得到了2-取代的5-乙烯基-4,5-二氢呋喃-3-羧酸酯、4,6a-二氢-3aH-环戊[b]呋喃-3-羧酸酯以及3a,4,5,7a-四氢苯并呋喃-3-羧酸酯。