e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
Synthesis
Tetronic Acids and Derivatives; Part VI1. A Convenient Synthesis of New 4-Oxo-2-phenyl-2H-4, 6-dihydrofuro [3, 4-d] triazole and 4-Oxo-4, 6-dihydrofuro [3, 4-c] …
P Pollet, S Gelin
Index: Pollet,P.; Gelin,S. Synthesis, 1979 , p. 977 - 979