Return to Article Details CONDENSATION OF SULFUR CONTAINING PYRIDINE SYSTEMS. 2. SYNTHESIS AND METHYLATION OF TRIETHYLAMMONIUM 1-CYANO-4,5-DIOXO-3,4,5,6-TETRAHYDRO[1]BENZOPYRANO[3,4-<i>c</i>]PYRIDINE-2-THIOLATE Download Download PDF