作者:Timothy J. Donohoe、Andrew J. McRiner、Peter Sheldrake
DOI:10.1021/ol0065930
日期:2000.11.1
[GRAPHICS]The partial reduction of electron-deficient pyridines is described herein. Mono- and disubstituted pyridines can be transformed into functionalized dihydropyridines using either Birch reduction conditions or sodium/naphthalene in THF. The compounds formed by these high-yielding reductive alkylation protocols have potential as synthetic intermediates, and we have shown that bicycle compounds containing 6,5, 6,6, and 6,7 ring systems can be prepared in one step via a base-promoted cylization.