A formal [3+3] cycloaddition strategy to substituted glutarimides was studied. N-Benzyl α-sulfonylacetamides and various α,β-unsaturated esters were used as starting materials.
Regioselective reduction of N-alkyl-3-sulfonyl glutarimides. Synthesis of 3,4-dihydro-3-tosylpyridin-2-ones
作者:Bo-Rui Chang、Chung-Yi Chen、Nein-Chen Chang
DOI:10.1016/s0040-4039(02)00446-x
日期:2002.4
Treatment of N-alkyl-3-sulfonyl glutarimides (1) with sodium hydride and then lithium aluminum hydride could give regioselective reduced hydroxy piperidones (5) which were further dehydrated to 3,4-dihydro-3-tosylpyridin-2-ones (6) in the presence of boron trifluoride.