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Communication | Regular issue | Vol 34, No. 4, 1992, pp.663-666
Published online, 1st January, 1970
DOI: 10.3987/COM-92-5973
Synthesis of Furan-fused 3-Sulfolene. A Stable Precursor to Furan Analogue of o-Quinodimethane

Ta-shue Chou* and Chung-Ying Tsai

*Institute of Chemistry, Academia Sinica, Taipei, Taiwan, R.O.C.

Abstract

Ultrasound-promoted zincation of 2-chloro-4-bromo-2-sulfolene (10) with benzoyloxyacetaldehyde (6), followed by base-induced hydrolysis, intramolecular conjugate addition and aromatization, gives the 3-sulfolene (4) which is a stable precursor to the furan analogue of o-quinodimethane.