Functionalization of thiazoles. Selectivity in the reactions of 2-(dimethylamino)-1,3-thiazoles with electrophiles: formation of Michael-type adducts and thiazolium salts
Reactions of vinyl selenoxides and ketenes via 3,3-sigmatropic rearrangement
作者:J.P. Marino、Min Woo Kim
DOI:10.1016/s0040-4039(00)96660-7
日期:1987.1
The reactions of several vinyl selenoxides with chlorocyano-ketene proceed a 3,3-sigmatropic rearrangement of an enolate oxyselenonium species to yield seleno-substituted γ-butyrolactones.
2(5H)-Furanone Azides in the Synthesis of Iminophosphoranes and Amines
作者:E. Sh. Saigitbatalova、D. R. Fedorova、O. A. Lodochnikova、D. R. Islamov、I. D. Shutilov、K. S. Usachev、A. R. Kurbangalieva
DOI:10.1134/s1070363224040108
日期:2024.4
Abstract The synthesis and characterization of previously unknown azides, iminophosphoranes and amines from commercially available mucochloric and mucobromic acids is reported. The reaction of 5-alkoxy-3,4-dihalo-2(5H)-furanones with sodium azide resulted in the regioselective formation of furanone 4-azidoderivatives. A series of novel iminophosphoranes was obtained from the reaction of corresponding