描述了由相应的吲哚基甲醇制备双(吲哚基甲基)醚的设计、原型合成、分离和表征。该方法涉及非常温和的条件,并且对吲哚基甲醇(N-吸电子基团和N-给电子基团)表现出良好的范围。两种电子不同的吲哚甲醇之间的交叉醚化也被证明可产生不对称醚。首次通过实验和1 H NMR 分析证明了双(吲哚基甲基)醚在从吲哚基甲醇形成双(吲哚基)甲烷中的中间作用。
Tris(pentafluorophenyl)borane-Catalyzed Alkylation of 1,3-Dicarbonyl Compounds with Benzylic Alcohols: Access to Oxygenated Heterocycles
作者:Chada Reddy、Jonnalagadda Vijaykumar、René Grée
DOI:10.1055/s-0030-1258214
日期:2010.11
rane has found to be an effective catalyst for the alkylation of 1,3-dicarbonyl compounds using benzylicalcohols as alkylating agents. Various 1,3-dicarbonyl compounds reacted cleanly with different benzylicalcohols to provide the corresponding monoalkylated products in good yield. In addition tris(pentafluorophenyl)borane efficiently promoted the C3 alkylation of 4-hydroxycoumarins. Further, several