Thiazole-fused 3-sulfolenes 8 and 9 have been efficiently prepared from 4-bromo-3-sulfolanone 7 in one step. these 3-sulfolenes react as synthetic equivalents to o-dimethylene thiazoles. © 1992.
Chou, T. shue, & Tsai, C. Y. (1992). Preparation and reactions of thiazole-fused 3-sulfolenes. Useful precursors to o-dimethylene thiazoles. Tetrahedron Letters, 33(29), 4201–4204. https://doi.org/10.1016/S0040-4039(00)74689-2