ChemInform Abstract: A One‐Pot Synthesis of Substituted Thieno(3,2‐b)thiophenes and Selenolo(3,2‐b)selenophenes.

Abstract

1994organo-selenium compounds, nonmetal heterocycles organo-selenium compounds, nonmetal heterocycles S 0137 -188A One-Pot Synthesis of Substituted Thieno(3,2-b)thiophenes and Selenolo(3,2-b)selenophenes.-Heating the hexynediols (I) with elemental sulfur or selenium yields directly the fused heterocycles (II) and (III) in low yield. -(CHOI, K. S.; SAWADA, K.; DONG, H.; HOSHINO, M.; NAKAYAMA, J.; Heterocycles 38 (1994)