作者:E. V. Klyuchareva、E. V. Ershova、R. G. Nigmatullina、M. Yu. Vozhdaeva、E. A. Kantor
DOI:10.1134/s0012500809020086
日期:2009.2
is a concerted [3,3] sigmatropic shift accompanied by inversion of the allyl fragment [3]. However, there are data that the thermal ortho rearrangement can produce alkenylphenols whose structure indicates the lack of inversion of the allyl fragment ( α rearrangement) [4]. The reaction products in some instances involve dialkenylphenols [5, 6], and their formation is explained by intermolecular reactions
据信,反应的关键阶段是伴随烯丙基片段反转的协同 [3,3] σ 位移 [3]。然而,有数据表明热邻位重排可以产生烯基苯酚,其结构表明缺乏烯丙基片段的反转(α重排)[4]。在某些情况下,反应产物涉及二烯基苯酚 [5, 6],它们的形成可以通过 C-O 键解离的分子间反应来解释。对位取代的苯酚被认为是由第一阶段的邻位迁移和第二阶段的烯丙基通过新的环状过渡态迁移到对位的结果 [3]。还推测了形成这些产物的解离机制 [5]。因此,