A new alternative to the Mannich reaction:: Tandem radical addition-cyclization reaction for asymmetric synthesis of γ-butyrolactones and β-amino acids
[GRAPHICS] The radical addition-cyclization reaction of substrates having two different radical accepters such as acrylate and aldoxime ether moieties was studied. This new free radical mediated Mannichtype reaction proceeded smoothly via a tandem C-C bond-forming process. Furthermore, the diastereoselective tandem reaction provides the novel method for asymmetric synthesis of gamma -butyrolactones and beta -amino acid derivatives.