α-Amino-α-vinyl-γ-butyrolactone Derivatives from α-{[(Trimethylsilyl)methyl]alkylidene}-γ-butyrolactones
作者:Marinella Capuzzi、Augusto Gambacorta、Tecla Gasperi、M. Antonietta Loreto、P. Antonio Tardella
DOI:10.1002/ejoc.200600540
日期:2006.11
novel silylated α-ylidene-γ-butyrolactones 2, through ring opening of the intermediate aziridine and loss of the trimethylsilyl group. The stereoselective synthesis of compounds 2, by cross-coupling reactions between α-[(triflyloxy)ylidene]-γ-butyrolactones 3 and tris[(trimethylsilyl)methyl]aluminum, is also described. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
N-受保护的 α-氨基-α-乙烯基-γ-丁内酯 1 是通过 NsONHCO2Et 与新型甲硅烷基化 α-亚基-γ-丁内酯 2 的氮杂迈克尔型加成获得的,通过中间体氮丙啶的开环和失去三甲基甲硅烷基。还描述了通过 α-[(三氟甲氧基) 亚基]-γ-丁内酯 3 和三 [(三甲基甲硅烷基) 甲基] 铝之间的交叉偶联反应立体选择性合成化合物 2。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)