Regioselective Nucleophilic Addition to Pyridinium Salts: A New Route to Substituted Dihydropyridones
作者:Timothy J. Donohoe、Matthew J. Connolly、Lesley Walton
DOI:10.1021/ol902402v
日期:2009.12.3
The regioselective addition of nucleophiles to pyridinium salts generates an intermediate enol-ether, which can be hydrolyzed in situ to provide a range of dihydropyridones. Certain Grignards have shown inherent differences in the regioselectivity of addition to these salts, and this difference can be tuned to give single regioisomeric addition products. The dihydropyridone products can be further