A Facile One-Pot Access to Dibenzo[b,e]oxepines by a Lewis Acid Catalysed Tandem Reaction
作者:Chada R. Reddy、Palacherla Ramesh、Nagavaram N. Rao、Saiyed A. Ali
DOI:10.1002/ejoc.201001739
日期:2011.4
Dibenzo[b,e]oxepine derivatives have been constructed efficiently by one-pot tandem carbon–carbon bond formation reactions. First, 2-(3,5-dimethoxybenzyloxy)benzaldehydes were treated with various nucleophiles under I2 catalysis and then 1-(3,5-dimethoxybenzyloxy)-3,5-dimethoxybenzene was treated with several aromatic as well as heteroaromatic aldehydes under BF3·Et2O catalytic conditions to provide
二苯并[b,e]氧杂环庚因衍生物已通过一锅串联碳-碳键形成反应有效构建。首先,2-(3,5-二甲氧基苄氧基)苯甲醛在I2催化下用各种亲核试剂处理,然后1-(3,5-二甲氧基苄氧基)-3,5-二甲氧基苯在BF3· Et2O 催化条件以高产率提供二苯并 [b,e] 氧杂环庚烷。