Gold-Catalyzed [4C+3C] Intramolecular Cycloaddition of Allenedienes: Synthetic Potential and Mechanistic Implications
作者:Beatriz Trillo、Fernando López、Sergi Montserrat、Gregori Ujaque、Luis Castedo、Agustí Lledós、Jose L. Mascareñas
DOI:10.1002/chem.200900164
日期:2009.3.23
room temperature: The Au complex generated in situ from [(IPr)AuCl] and AgSbF6 promotes the [4C+3C] intramolecular cycloaddition of allenes and dienes at room temperature, and in a particularly efficient and versatile manner. A DFT study on dimethylallenyl precursors agreed with the formation and cycloaddition of a metal–allyl cation intermediate, and points to the 1,2‐hydride shift as the key rate‐limiting
在室温下高效:由[(IPr)AuCl]和AgSbF 6原位生成的Au络合物在室温下以特别有效和通用的方式促进艾伦和二烯的[4C + 3C]分子内环加成反应。DFT对二甲基烯丙基前体的研究与金属-烯丙基阳离子中间体的形成和环加成相吻合,并指出1,2-氢化物转移是关键的限速步骤。