Stereocontrolled intermolecular radical additions to methylidenepiperazine-2,5-diones
作者:Christina L. L. Chai、Alison R. King
DOI:10.1039/a900771g
日期:——
The use of latent amino acid functionalities for the syntheses of methylidenepiperazine-2,5-diones is reported. These piperazinediones are potential chiral templates in the synthesis of functionalised piperazinediones and amino acids. Carbon–carbon bond formation utilising radical addition reactions between the methylidenepiperazinediones and a number of alkyl radicals resulted in good yields of the addition adduct. Moderate to high diastereoselectivities were observed and factors controlling the chiral induction are discussed here.