Novel Synthesis of Azocine, Azepine, Oxocine, and Oxepine Derivatives by Palladium-catalyzed Medium-Ring Formation from Bromoallenes
作者:Tetsuaki Tanaka、Hiroaki Ohno、Hisao Hamaguchi、Miyo Ohata、Shohei Kosaka
DOI:10.3987/com-03-s38
日期:——
Novel and efficient synthesis of medium-sized heterocycles such as azepine, oxepine, and benzo[d]azocine derivatives is described. Treatment of bromoallenes having a nucleophilic moiety with sodium alkoxide and a palladium(0) catalyst in the presence of an alcohol leads to regioselective formation of medium-sized rings at the central position of the allenic carbon.
描述了中型
杂环化合物如
氮杂平、奥塞平和
苯并[d]唑辛衍
生物的新型高效合成。在醇存在下用醇
钠和
钯 (0)
催化剂处理具有亲核部分的
溴丙二烯会导致在
丙二烯碳的中心位置区域选择性地形成中等大小的环。