One-step synthesis of methoxycarbonyl-substituted tetraselenafulvalene under high pressure
Abstract
The reactions of methyl propiolate and dimethyl acetylenedicarboxylate with CSe2 in dichloromethane at 60–65 °C under 4500–5000 atm for 10 h gave dimethoxy-carbonyl- and tetramethoxycarbonyl-substituted tetra-selenafulvalenes in good yield (ca. 85–90%).