Ring Expansion, Ring Contraction, and Annulation Reactions of Allylic Phosphonates under Oxidative Cleavage Conditions
作者:Dupre Orr、Nikolas Yousefi、Thomas G. Minehan
DOI:10.1021/acs.orglett.8b00791
日期:2018.5.18
followed by treatment with base affords 2-cyclopenten-1-ones 7 in good overall yields. This method may offer a practical alternative to existing methods for effecting one-carbon ring expansion, ring contraction, and annulation reactions.
环烯基烷基膦酸酯1的氧化裂解,然后用碱处理,可以得到高产率或高产率的同系环烯酮2。使环烷-2-烯基膦酸酯3在相同条件下以优异的产率提供与一碳环缩合的化合物4。γ,δ-不饱和酮膦酸酯6的氧化裂解,然后用碱处理,可得到具有良好总收率的2-环戊烯-1-酮7。该方法可以为实现单碳环膨胀,环收缩和环化反应的现有方法提供一种实用的替代方法。