FRIEDEL–CRAFTS REARRANGEMENTS: II. REARRANGEMENTS DURING CYCLIALKYLATION OF ε-ARYL-SUBSTITUTED COMPOUNDS
作者:L. R. C. Barclay、B. A. Ginn、C. E. Milligan
DOI:10.1139/v64-085
日期:1964.3.1
Friedel–Crafts cyclialkylation of aromatics such as 1,1,4,4-tetramethyltetralin with 2,6-dichloro-2,6-dimethylheptane does not yield a benzsuberane as previously reported. Several 5-phenyl-substituted chlorides, alcohols, and olefins were synthesized for cyclialkylation studies. These included 2-chloro-2,6-dimethyl-6-phenylheptane (Xa), 3-chloro-3,7-dimethyl-7-phenyloctane (Xb), 2,6-dimethyl-6-phenyl-2-heptanol
芳烃如 1,1,4,4-四甲基四氢化萘与 2,6-二氯-2,6-二甲基庚烷的 Friedel-Crafts 环烷基化不会产生先前报道的苯丁烷。合成了几种 5-苯基取代的氯化物、醇和烯烃,用于环烷基化研究。这些包括 2-氯-2,6-二甲基-6-苯基庚烷 (Xa)、3-氯-3,7-二甲基-7-苯基辛烷 (Xb)、2,6-二甲基-6-苯基-2-庚醇、 2,6-二甲基-6-苯基-2-庚烯-4-酮 (XX)、2-氯-6-甲基-6-苯基庚烷和 1-氯-5-苯基戊烷 (XXIV)。Xa(和相应的醇)、Xb、2-氯-6-甲基-6-苯基-庚烷和 XXIV 的环烷基化产生烷基四氢萘而不是苯丁烷。提出并讨论了证据,表明烷基四氢化萘是通过芳基取代系统侧链的重排形成的。至少在一种情况下明确排除了涉及苯丁二烯中间体通过苯鎓离子机制重排的替代机制——Xb 的环化。不...