有机化学 ›› 2021, Vol. 41 ›› Issue (11): 4320-4326.DOI: 10.6023/cjoc202106040 上一篇    下一篇

研究论文

二碘化钐促进的2-哌啶酮与α,β-不饱和酸酯的加成-开环反应研究

孙建婷a,b, 陈玲艳a,*(), 魏邦国b   

  1. a 上海工程技术大学化学化工学院 上海 201620
    b 复旦大学药学院 上海 201203
  • 收稿日期:2021-06-22 修回日期:2021-07-20 发布日期:2021-08-24
  • 通讯作者: 陈玲艳
  • 基金资助:
    研究生创新(20KY0431)

Samarium Diiodide Promoted the Addition-Ring-Opening Reaction of 2-Piperidinone with α,β-Unsaturated Esters

Jian-Ting Suna,b, Ling-Yan Chena(), Bang-Guo Weib   

  1. a College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620
    b School of Pharmacy, Fudan University, Shanghai 201203
  • Received:2021-06-22 Revised:2021-07-20 Published:2021-08-24
  • Contact: Ling-Yan Chen
  • Supported by:
    Postgraduate Students Innovation Program(20KY0431)

tBuOH作为质子供体, 基于SmI2促进2-哌啶酮与α,β-不饱和酸酯进行自由基加成-开环反应, 以43%~89%的收率制备了一系列含N-Boc氨基酮化合物3a~3l. 以(S)-8-[(叔丁氧基羰基)氨基]-5-[(叔丁基二甲基甲硅烷基)氧基]-4-氧代辛酸甲酯(3e)为关键中间体, 经一锅去保护-环合-还原-胺解等反应建立了吲哚里西啶骨架(6)的合成方法.

关键词: 二碘化钐, 2-哌啶酮, 自由基加成-开环反应, 吲哚里西啶

A convenient approach to N-Boc amino ketones 3a~3l has been developed, which features a SmI2 prompted one-pot radical addition-ring opening process of 2-piperidinone with α,β-unsaturated esters. Moreover, the indolizidine skeleton (6) has been successfully synthesized from the key methyl (S)-8-((tert-butoxycarbonyl)amino)-5-((tert-butyl- dimethylsilyl)oxy)-4-oxooctanoate (3e), which undergoes one-pot deprotection-condensation-reduction-amination process.

Key words: samarium diiodide, 2-piperidinone, radical addition-ring opening, indolizidine