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-Disubstituted2,3-dihydropyran-4-ones may be prepared in high yields by the Lewis acid-catalysed hetero-Diels–Alderreactions of electron-rich dienes with ketones bearing strongly electron-withdrawing substituents.