Selective formation of the rctt chair stereoisomers of octa-O-alkyl resorcin[4]arenes using Brønsted acid catalysis
作者:Deborah Moore、Graeme W. Watson、Thorfinnur Gunnlaugsson、Susan E. Matthews
DOI:10.1039/b714735j
日期:——
New synthetic conditions are described for the fully selective formation of the rctt chair stereoisomers of octa-O-alkyl resorcin[4]arenes; these offer a clean route into the chair conformer of these interesting receptor molecules. Brønsted acid catalysis in acetic acid solutions results in the formation of the single isomer when 1,3-dimethoxybenzene is heated at 80 °C with a range of aldehydes, straight-