2,4,6-Trialkylphenyl-2<i>H</i>-phospholes from slightly aromatic 1<i>H</i>-phospholes and their use in [4 + 2] cycloaddition reactions
作者:György Keglevich、Renáta Farkas、Tímea Imre、Krisztina Ludányi、Áron Szöllősy、László Tőke
DOI:10.1002/hc.10151
日期:——
1-(2,4,6-Trialkylphenyl)phospholes 1a,b possess a moderate aromatic character. Despite of that they underwent a sigmatropic rearrangement at 150°C to afford 2H-phospholes 2a,b which by trapping with tolane, or in reaction with another unit of 2 gave [4 + 2] cycloadducts 3a,b, or in a reversible reaction, dimer 6, respectively. Dedimerization of species 6 at 150°C in the presence of tolane, or at 0°C
1-(2,4,6-三烷基苯基)磷光体 1a,b 具有中等芳香特性。尽管如此,它们还是在 150°C 进行了 σ 重排,得到了 2H-磷光体 2a,b,通过用甲苯捕获,或与另一个单元 2 反应得到 [4 + 2] 环加合物 3a,b,或在可逆反应中,二聚体 6,分别。在二甲苯存在下,在 150°C 下或在氧化环境下在 0°C 下,物质 6 的去二聚化分别导致 1-磷酸化冰片二烯 3a 或氧化磷二聚体 8。© 2003 Wiley Periodicals, Inc. 杂原子化学 14:316–319, 2003; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.10151