作者:S. Braverman、E.V.K. Suresh Kumar、M. Cherkinsky、M. Sprecher、I. Goldberg
DOI:10.1016/j.tet.2005.01.114
日期:2005.4
Double [2,3] sigmatropic rearrangements of bis(propargyl sulfenates) to bis(allenic sulfoxides) and of bis(propargyl sulfinates) to bis(allenic sulfones) are shown to be a convenient and effective method for the preparation of conjugated diallene systems bearing two electron withdrawing trihalomethyl sulfoxide or sulfone substituents either on C-1 and C-6, or on C-3 and C-4. Such substituents are further
双(炔丙基亚磺酸盐)到双(烯丙基亚砜)和双(炔丙基亚磺酸盐)到双(烯丙基砜)的双[2,3]σ重排被证明是一种方便有效的方法制备带有轴承的共轭二烯体系C-1和C-6或C-3和C-4上有两个吸电子三卤代甲基亚砜或砜取代基。进一步显示出这样的取代基有助于环化成双(亚甲基)环丁烯并稳定后者。在环外亚甲基末端上的吸电子基团取代被证明比在环内双键上的类似取代更有效。