First Authentication of<i>Kostanecki</i>'s Triketone and Multimolecular Reaction of Aromatic Aldehydes with Acetophenone
作者:Zixing Shan、Xiaoyun Hu、Lin Hu、Xitian Peng
DOI:10.1002/hlca.200800413
日期:2009.6
Abstractmagnified imageA double‐component, multimolecular reaction between acetophenone and aromatic aldehydes was achieved under catalysis by the solid‐base mixture NaOH/K2CO3, and Kostanecki's triketone, supposed to exist for more than 110 years, was successfully separated for the first time as an accompaniment of a pentane‐1,5‐dione or a 1,2,3,4,5‐pentasubstituted cyclohexanol (Scheme 1) and authenticated by spectroscopic and single‐crystal X‐ray diffraction analysis. Thus, the multimolecular‐reaction mechanism of the formation of 1,2,3,4,5‐pentasubstituted cyclohexanols from 1‐phenylalkan‐1‐ones and aromatic aldehydes was fully validated based on the results (Scheme 3).