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Paper | Regular issue | Vol 57, No. 4, 2002, pp.657-664
Published online, 1st January, 1970
DOI: 10.3987/COM-02-9446
Quadruple Photocyclization Reaction Leading to the Cyclophanes Containing Two Benzo[1,2-b:5,4-b’]difuran Rings

Kwanghee Koh Park* and Hongsan Lim

*Department of Chemistry, Chungnam National University, Taejon 305-764, Korea

Abstract

Irradiation of the macrocycles (4a-b) having two 1,5-dibenzoyl-2,4-dialkoxybenzene moieties with 350 nm mercury lamp followed by dehydration afforded two benzo[1,2-b:5,4-b’]difuran ring-containing cyclophanes (1a-b) via quadruple photocyclization reaction forming four dihydrofuranol ring systems in one pot.