(2R,3S)-3-tert-butyldimethylsilyloxy-1-tert-butyloxycarbonyl-2-[(2-ethyloxycarbonyl)ethyl]pyrrolidine | 1310339-74-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯烷类
• 英文名称: (2R,3S)-3-tert-butyldimethylsilyloxy-1-tert-butyloxycarbonyl-2-[(2-ethyloxycarbonyl)ethyl]pyrrolidine
• 英文别名: tert-butyl (2R,3S)-3-[tert-butyl(dimethyl)silyl]oxy-2-(3-ethoxy-3-oxopropyl)pyrrolidine-1-carboxylate
• CAS: 1310339-74-2
• 化学式: C₂₀H₃₉NO₅Si
• 分子量: 401.619
• InChiKey: FBKGSTLEWLARJJ-CVEARBPZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.73
• 重原子数：
  27
• 可旋转键数：
  10
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  65.1
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  在 4-二甲氨基吡啶 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 三甲基氢氧化锡 作用下， 以 二氯甲烷 、 1,2-二氯乙烷 为溶剂， 反应 26.0h， 生成 (2R,3S)-3-tert-butyldimethylsilyloxy-1-tert-butyloxycarbonyl-2-[(2-ethyloxycarbonyl)ethyl]pyrrolidine
  参考文献：
  名称：

  α-氨基酰基碲化物的脱羰基自由基偶联：γ-氨基和α，β-二氨基酸的一步制备以及加巴喷丁和甘露糖苷A的快速合成

  摘要：

  已开发出一种新的基于自由基的偶联方法，可从α-氨酰基碲化物单步生成各种γ-氨基酸和α，β-二氨基酸。在室温下被Et 3 B和O 2活化后，α-氨基酰基碲化物很容易通过容易的脱羰作用转化为α-氨基碳原子团，然后与丙烯酸酯或乙醛氧基肟醚发生分子间反应。这种温和而有效的方法有效地整合到了加巴喷丁和天然产物（-）-甘露酸A的快速合成途径中。

  DOI：

  10.1002/anie.201410186

文献信息

• SmI₂-Mediated Radical Cross-Couplings of α-Hydroxylated Aza-hemiacetals and<i>N</i>,<i>S</i>-Acetals with α,β-Unsaturated Compounds: Asymmetric Synthesis of (+)-Hyacinthacine A₂, (−)-Uniflorine A, and (+)-7-<i>epi</i>-Casuarine
  作者：Xue-Kui Liu、Shi Qiu、Yong-Gang Xiang、Yuan-Ping Ruan、Xiao Zheng、Pei-Qiang Huang

  DOI：10.1021/jo200600n

  日期：2011.6.17

  The SmI2-mediated radical coupling reactions of beta-hydroxylated pyrrolidine/piperidine aza-hemiacetals 8 and 9 and N,S-acetals 6 and 33 with alpha/beta-unsaturated compounds are described. This method allows a rapid access to beta-hydroxylated pyrrolidines, piperidines, pyrrolizidinones, and indolizidinones. Starting from N,S-acetal 33 and via a common intermediate 27, the alkaloids hyacinthacine A(2) (2), uniflorine A (3, 6-epi-casuarine), and the unnatural epimer 7-epi-casuarine (37) have been synthesized in four and five steps with overall yields of 34%, 16%, and 13%, respectively. The radical mechanism of the coupling reactions has been confirmed by controlled experiments, which also allowed deducing the anionic mechanism in the coupling between N,S-acetal 6 and carbonyl compounds. This demonstrates that the mechanisms of these SmI2-mediated reactions are switchable from Barbier-type anionic to radical by cooperative action of BF3 center dot OEt2 and t-BuOH.
• Decarbonylative Radical Coupling of α-Aminoacyl Tellurides: Single-Step Preparation of γ-Amino and α,β-Diamino Acids and Rapid Synthesis of Gabapentin and Manzacidin A
  作者：Masanori Nagatomo、Hayato Nishiyama、Haruka Fujino、Masayuki Inoue

  DOI：10.1002/anie.201410186

  日期：2015.1.26

  coupling method has been developed for the single‐step generation of various γ‐amino acids and α,β‐diamino acids from α‐aminoacyl tellurides. Upon activation by Et3B and O2 at ambient temperature, α‐aminoacyl tellurides were readily converted into α‐amino carbon radicals through facile decarbonylation, which then reacted intermolecularly with acrylates or glyoxylic oxime ethers. This mild and powerful

  已开发出一种新的基于自由基的偶联方法，可从α-氨酰基碲化物单步生成各种γ-氨基酸和α，β-二氨基酸。在室温下被Et 3 B和O 2活化后，α-氨基酰基碲化物很容易通过容易的脱羰作用转化为α-氨基碳原子团，然后与丙烯酸酯或乙醛氧基肟醚发生分子间反应。这种温和而有效的方法有效地整合到了加巴喷丁和天然产物（-）-甘露酸A的快速合成途径中。