Synthesis of Furan-fused 3-Sulfolene. A Stable Precursor to Furan Analogue of o-Quinodimethane
作者:Ta-shue Chou、Chung-Ying Tsai
DOI:10.3987/com-92-5973
日期:——
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.