Asymmetric synthesis of nitrogen heterocycles by reaction of chiral β-enaminocarbonyl substrates with acrylate derivatives
作者:Claude Agami、Luc Dechoux、Séverine Hebbe
DOI:10.1016/s0040-4039(02)00336-2
日期:2002.4
We have studied the reactivity of β-enaminoesters 1 (R2=OMe) or β-enaminoketone 1 (R2=Me), derived from (S)-phenylglycinol, with activated acrylate derivatives. Substrates 1 (R1=Me) afforded by aza-annulation oxazololactams 2 and 3,4-dihydro-2-pyridones 3. In the same conditions β-enaminoesters 1 (R1=H) furnish N-acylated oxazolidines 4.
A novel stereocontrolled synthesis of enantiopure bicyclic lactams
作者:Claude Agami、Luc Dechoux、Séverine Hebbe
DOI:10.1016/s0040-4039(03)01209-7
日期:2003.7
A study on the reactivity of 3,4-dihydro-2-pyridones 9, derived from (S)-phenylglycinol, toward different bases is presented. Using a catalytic amount of bases, the cis bicycliclactams were obtained with excellent diastereoselectivities.