[2π+2σ] and [4π+2σ] Type Cycloaddition Reactions of Furan and Benzofurans with Benzocyclopropene
作者:Katsuhiro Saito、Hiraku Ishihara、Shinzo Kagabu
DOI:10.1246/bcsj.60.4141
日期:1987.11
Reactions of benzocyclopropene with furan and benzofuran afforded [2π+2σ]-type cycloaddition products, where the furans act as 2π-components and benzocyclopropene acts as a 2σ-component. A similar reaction with 1,3-diphenylisobenzofuran gave a [4π+2σ]-type cycloaddition product using the furan as a 4π-component.
苯并环丙烯与呋喃和苯并呋喃反应生成 [2π+2σ] 型环加成产物,其中呋喃作为 2π 组分,苯并环丙烯作为 2σ 组分。与 1,3-二苯基异苯并呋喃的类似反应得到 [4π+2σ] 型环加成产物,使用呋喃作为 4π 组分。