- 作者: Hart, David J. ; Kuzmich, Daniel
- 作者服務機構: Dept. of Chemistry, The Ohio State Univ., Columbus, Ohio, U.S.A.
- 中文摘要: Treatment of vinylogous urethanes 9a and 9b with tri- n-butyltin hydride generated a free radical that underwent cyclization-fragmentation to afford oxindole-ketones 10 and 11 in high yield. Vinylogous urethane 13, gave only cyclization-reduction products 15 and 16 upon treatment with tri-n-butyltin hydride at 80.degree.C, but also afforded a low yield of cyclization-fragmentation product 14 upon treatment with tris(trimethylsilyl)silane at 140.degree.C.
- 英文摘要: --
- 中文關鍵字: Radical Cyclization; Radical Fragmentation; Oxindole; Gelsemine; Oxogelsemine
- 英文關鍵字: 自由基環化;自由基裂解;氧;黃素馨素;氧化黃素馨素