Studies toward the synthesis of arteminolide: [5+2] cycloaddition reaction of allenes with oxidopyrylium ions
作者:Hee-Yoon Lee、Jeong-Hun Sohn、Hyoun Young Kim
DOI:10.1016/s0040-4039(00)02324-8
日期:2001.2
The oxidopyrylium cycloaddition reaction of allenes was investigated. Contrary to other cycloaddition reactions, electron deficient allenes were not reactive at all and electron rich allenes were slightly more reactive than neutral allenes. The intermolecular cycloaddition reaction occurred at the terminal position regardless of substitution patterns. For the intramolecular reaction only the perhydroazulene
研究了丙二烯的氧化吡啶环加成反应。与其他环加成反应相反,缺电子的Allene根本不具有反应性,富电子的Allene的反应性比中性Allene略高。分子间环加成反应发生在末端位置,与取代方式无关。对于分子内反应,仅获得全氢氮杂烯结构而不是其他可能的产物。