A Straightforward Route to Functionalized <i>trans</i>-Diels−Alder Motifs
作者:Jun Hee Lee、Yandong Zhang、Samuel J. Danishefsky
DOI:10.1021/ja1073855
日期:2010.10.20
A sequence consisting of a Lewis acid-catalyzed Diels-Alder reaction on a 2-halocyclohexenone, followed by reductive alkylation, provides a route to trans-fused octalinones bearing angularmethyl groups with functionality corresponding to that which would have been possible from a trans-directed Diels-Alder reaction.
active aluminum‐based system for Diels–Aldertransformations is reported. The system was generated by mixing a β‐diketiminate‐stabilized aluminum bistriflate compound with Na[BArCl4] (ArCl=3,5‐Cl2C6H3). Solid‐state analysis of the catalytic system reveals a unique structure incorporating a two‐dimensional coordination polymer. According to the experimental results obtained from several Diels–Alder transformations
据报道,用于Diels-Alder转化的具有催化活性的铝基体系。该系统是通过将β-二酮稳定的双硫铝酸铋化合物与Na [BAr Cl 4 ](Ar Cl = 3,5-Cl 2 C 6 H 3)混合而生成的。催化系统的固态分析显示了一种独特的结构,该结构结合了二维配位聚合物。根据从几次Diels-Alder转换获得的实验结果,铝基体系似乎是最近报道的基于碳和硅阳离子的化合物的一种更实用,更耐用的替代方法。
Buchta; Scheuerer, Chemische Berichte, 1956, vol. 89, p. 1002,1011