Formation of 3-Aminofuran-2-(5H)-ones and 3-Amino-1H-pyrrole-2,5-diones by Rearrangement of Isoxazolidines
作者:Daniela Iannazzo、Caterina Carnovale、Salvatore Giofrè、Roberta Ettari、Giovanni Romeo、Roberto Romeo、Giuseppe Lanza、Ugo Chiacchio
DOI:10.1055/s-0030-1259308
日期:2011.1
A novel rearrangement pathway of 3-alkoxycarbonyl-4-carbamoylisoxazolidines, leading to 1H-pyrrole-2,5-diones by treatment with TBAF, is reported. DFT quantum chemical calculations support the reaction route, controlled by ring strain, which proceeds through the opening of a bicyclic intermediate, with aldehyde extrusion.
报道了一种新的 3-烷氧基羰基-4-氨基甲酰基异恶唑烷重排途径,通过 TBAF 处理生成 1H-吡咯-2,5-二酮。 DFT 量子化学计算支持由环应变控制的反应路线,该路线通过双环中间体的打开和醛的挤出进行。