Collect. Czech. Chem. Commun. 2000, 65, 1939-1949

A Novel Synthesis of [1]Benzothieno[3,2-b][1]benzofuran

Kateřina Černovská, Miloslav Nič, Pavel Pihera and Jiří Svoboda*

Department of Organic Chemistry, Institute of Chemical Technology, Prague, 166 28 Prague 6, Czech Republic


A new synthesis of the title compound based on the formation of the furan ring in the key step was elaborated. Methyl 2-methoxy[1]benzothieno[3,2-b][1]benzofuran-7-carboxylate (15) was prepared by this methodology as a new type of a core for liquid crystal synthesis.

Keywords: [1]Benzothieno[3,2-b][1]benzofuran; Benzofurans; Benzothiophenes; Fused heterocycles; Heteropentalenes; Liquid crystals.

References: 34 live references.