Uncatalyzed [4+ 2] cycloadditions of 3-nitrocoumarins with vinyl ethers in solventless conditions. A new entry to chromene derivatives

D Amantini, F Fringuelli, F Pizzo

Index: Dauzonne, Daniel; Royer, Rene Synthesis, 1983 , # 10 p. 836 - 837

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Citation Number: 47

Abstract

... because it allows cis-fused tetrahydrofuro- and tetrahydropyranobenzopyrans 7 to be synthesized. ... in neat conditions and in water, was used to synthesize substituted tetrahydrofurochromenes ... Table 3. Synthesis of Tetrahydrofurochromenes by a One-Pot Consecutive Process ...