Azafulvenium methides: new extended dipolar systems
…, RC Storr, TL Gilchrist, P Rafferty
文献索引：Sutcliffe, Oliver B.; Storr, Richard C.; Gilchrist, Thomas L.; Rafferty, Paul Journal of the Chemical Society. Perkin Transactions 1, 2001 , # 15 p. 1795 - 1806
The transient 1-azafulvenium methides 24, 26 and 28 generated by thermal extrusion of sulfur dioxide from pyrrolo [1, 2-c][1, 3] thiazole 2, 2-dioxide 20 (R= Me), 22 and 23 undergo sigmatropic [1, 8] H shifts and the 1-acyl derivatives 30 electrocyclise to give novel pyrrolo [1, 2-c][1, 3] oxazines 32. The analogous 1, 2-diazafulvenium methide 36 has been intercepted in [8π+ 2π] cycloadditions with electron-rich silylated acetylenes to give adducts 37–40. ...
