Hetero-Diels–Alder reactions of ketones: a high-yielding synthesis of 2,2-disubstituted 2,3-dihydropyran-4-ones
作者:Philip C. Bulman Page、P. Howard Williams、Eric W. Collington、Harry Finch
DOI:10.1039/c39870000756
日期:——
2,2-Disubstituted 2,3-dihydropyran-4-ones may be prepared in high yields by the Lewis acid-catalysed hetero-Diels–Alder reactions of electron-rich dienes with ketones bearing strongly electron-withdrawing substituents.
2,2-二取代的2,3-二氢吡喃-4-酮可以通过富电子二烯与带有强吸电子取代基的酮的路易斯酸催化的杂狄尔斯-阿尔德反应制备,产率高。