Tin(II) dienolates were found to react exclusively at the gamma carbon with acyclic α,β-unsaturated ketones in the Michael sense. Either acyclic 1,7-diketones or 2-cyclohexenol derivatives could be obtained in moderate to excellent yields by appropriate choice of reaction parameters. Moreover, in the latter case, only a single cyclohexenol adduct was afforded.
研究发现,
锡(II)二元醇化合物只能在伽马碳处与无环 α、β-不饱和酮发生迈克尔意义上的反应。通过适当选择反应参数,可以获得中等至极好收率的无环 1,7- 二酮或
2-环己烯醇衍
生物。此外,在后一种情况下,只能得到单一的
环己烯醇加合物。