Diastereoselectivity in Center-Face Interaction of Reactants. Synthesis of Tetronic Acid Derivatives from β-C-Lithiated Acrylates and Aldehydes and Methylation of 5-Deprotonated 4-Amino-2(5H)-furanones1 - Jatzke, Harald; Evertz, Ute; Schmidt, Richard R (Synlett, 1990)