Electron Deficient Dienes. 4. A Synthetic Equivalent of 4-Methyleneglutaconic Acid, its Mono and Diethyl Esters and their Use in a Concise General Synthesis of Isophthalic Acids and Isophthalates - Bodwell, Graham J; Hawco, Krista M; Satou, Teizi (Synlett, 2003)