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Dibenzofuran derivativesR 0080 Efficient Synthesis of Functionalized Dibenzofurans by Domino "Twofold Heck/

6π-Electrocyclization" Reactions of 2,3-Di- and 2,3,5-Tribromobenzofuran. — The synthesis of the target compounds is based on the Pd-catalyzed reaction of 2,3-di- and 2,3,5-tribromobenzofurans with alkenes at 100°C and proceeds via intermediate valence isomers of 1,2-dihydrodibenzofuran. When the reaction is run at 70°C, di- and trialkenylbenzofuran precursors are isolated. — (HUSSAIN, M.; HUNG, N. T.; LANGER*, P.; Tetrahedron Lett. 50 (2009) 27, 3929-3932; Inst. Chem., Univ. Rostock, D-18059 Rostock, Germany; Eng.) — Mais

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