The Condensation of Oxalic Esters with Esters of β-Alanine and N-Substituted β-Aminopropionic Acids. Synthesis of Some Derivatives of 2,3-Dioxopyrrolidine and 2-Oxo-3-methoxy-3-pyrroline
The Condensation of Oxalic Esters with Esters of β-Alanine and N-Substituted β-Aminopropionic Acids. Synthesis of Some Derivatives of 2,3-Dioxopyrrolidine and 2-Oxo-3-methoxy-3-pyrroline