(R)-1-(tert-butoxycarbonyl)-2-phenylpiperidine

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 哌啶类
• 英文名称: (R)-1-(tert-butoxycarbonyl)-2-phenylpiperidine
• 英文别名: (2R)-N-Boc-2-phenylpiperidine；tert-butyl (R)-2-phenylpiperidine-1-carboxylate；(R)-N-Boc-2-phenylpiperidine；(R)-tert-butyl 2-phenylpiperidine-1-carboxylate；tert-Butyl (R)-2-phenylpiperidine-1-carboxylate；tert-butyl (2R)-2-phenylpiperidine-1-carboxylate
• 化学式: C₁₆H₂₃NO₂
• 分子量: 261.364
• InChiKey: SCTHWHFWPIYEOT-CQSZACIVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  19
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  29.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (R)-1-(tert-butoxycarbonyl)-2-phenylpiperidine 在 四甲基乙二胺 、 仲丁基锂 作用下， 以 乙醚 为溶剂， 反应 0.5h， 生成 (2R)-1-tert-butyl 2-ethyl 2-phenylpiperidine-1,2-dicarboxylate
  参考文献：
  名称：

  Synthetic Applications and Inversion Dynamics of Configurationally Stable 2-Lithio-2-arylpyrrolidines and -piperidines

  摘要：

  In diethyl ether, N-Boc-2-lithio-2-arylpiperidines have been found to be configurationally stable at -80 degrees C, whereas N-Boc-2-lithio-2-arylpyrrolidines are configurationally stable at -60 degrees C. Several tertiary benzylic carbanions derived from enantioenriched 2-aryl heterocycles have been successfully alkylated or acylated with little to no loss of enantiopurity. The scope of the reactions has been explored. The enantiomerization dynamics of N-Boc-2-lithio-2-phenylpyrrolidine and N-Boc-2-lithio-2-phenylpiperidine have been studied in the presence of different solvents and achiral ligands.

  DOI：

  10.1021/ja306276w
• 作为产物：
  描述：

  1-Boc-哌啶 在 C₁₂H₂₄N₂O^(2-)*2Li⁽¹⁺⁾ 、 仲丁基锂 作用下， 以 乙醚 为溶剂， 反应 26.5h， 生成 (R)-1-(tert-butoxycarbonyl)-2-phenylpiperidine
  参考文献：
  名称：

  Synthetic Applications and Inversion Dynamics of Configurationally Stable 2-Lithio-2-arylpyrrolidines and -piperidines

  摘要：

  In diethyl ether, N-Boc-2-lithio-2-arylpiperidines have been found to be configurationally stable at -80 degrees C, whereas N-Boc-2-lithio-2-arylpyrrolidines are configurationally stable at -60 degrees C. Several tertiary benzylic carbanions derived from enantioenriched 2-aryl heterocycles have been successfully alkylated or acylated with little to no loss of enantiopurity. The scope of the reactions has been explored. The enantiomerization dynamics of N-Boc-2-lithio-2-phenylpyrrolidine and N-Boc-2-lithio-2-phenylpiperidine have been studied in the presence of different solvents and achiral ligands.

  DOI：

  10.1021/ja306276w

文献信息

• Chiral oxime ethers in asymmetric synthesis. Part 5.1 Asymmetric synthesis of 2-substituted 5- to 8-membered nitrogen heterocycles by oxime addition–ring-closing metathesis
  作者：James C. A. Hunt、Pierre Laurent、Christopher J. Moody

  DOI：10.1039/b207235c

  日期：——

  Addition of organometallic reagents to chiral oxime ethers 1 derived from an unsaturated aldehyde, or addition of an alkene containing organometallic to chiral aldoxime ethers 2 results in highly stereoselective formation of the hydroxylamines 6. N-Allylation gives the dienes 7 which undergo ring-closing metathesis (RCM) reaction to give the 5-, 6-, and 7-membered nitrogen heterocycles 8. Likewise

  在手性化合物中添加有机金属试剂 肟 醚 1来自不饱和醛，或添加 烯烃 含有有机金属至手性 醛肟 醚 2导致高度立体选择性的形成羟胺 6。N-烯丙基化给出二烯7中经历闭环复分解 （RCM）反应生成5元，6元和7元 氮杂环8。同样地，氨基甲酸苄酯类9，也通过立体选择性除了肟醚制备，转化成二烯烃10，该例行RCM给出5到8元的azacycles 11。这肟 添加-RCM 因此，协议是非对称合成的通用方法 氮 杂环，进一步以不饱和杂环转化为手性为例 哌啶，包括生物碱（-）-coniine。
• A Selenourea-Thiourea Brønsted Acid Catalyst Facilitates Asymmetric Conjugate Additions of Amines to α,β-Unsaturated Esters
  作者：Yingfu Lin、William J. Hirschi、Anuj Kunadia、Anirudra Paul、Ion Ghiviriga、Khalil A. Abboud、Rachael W. Karugu、Mathew J. Vetticatt、Jennifer S. Hirschi、Daniel Seidel

  DOI：10.1021/jacs.9b12457

  日期：2020.3.25

  enantioselectivity via the conjugate addition of cyclic amines to unactivated α,β-unsaturated esters. A related strategy enables the kinetic resolution of racemic cyclic 2-arylamines, using benzyl acrylate as the resolving agent. Reactions are facilitated by an unprecedented selenourea-thiourea organocatalyst. As elucidated by DFT calculations and 13C kinetic isotope effects studies, the rate-limiting and enantiodetermining

  通过将环胺与未活化的 α,β-不饱和酯共轭加成，可以获得具有高水平对映选择性的 β-氨基酯。使用丙烯酸苄酯作为拆分剂，相关策略能够实现外消旋环状 2-芳胺的动力学拆分。前所未有的硒脲-硫脲有机催化剂促进了反应。通过 DFT 计算和 13C 动力学同位素效应研究阐明，反应的限速和对映体决定步骤是催化剂对两性离子中间体的质子化。这是一种罕见的情况，其中硫脲化合物充当不对称布朗斯台德酸催化剂。
• Synthesis and kinetic resolution of <i>N</i>-Boc-2-arylpiperidines
  作者：Edward J. Cochrane、Daniele Leonori、Lorraine A. Hassall、Iain Coldham

  DOI：10.1039/c4cc04576a

  日期：——

  An efficient kinetic resolution of 2-arylpiperidines was developed using a chiral base.

  开发了一种使用手性碱的高效动力学拆分2-芳基哌啶的方法。
• Highly Effective Asymmetric Hydrogenation of Cyclic <i>N</i>-Alkyl Imines with Chiral Cationic Ru-MsDPEN Catalysts
  作者：Fei Chen、Ziyuan Ding、Jie Qin、Tianli Wang、Yanmei He、Qing-Hua Fan

  DOI：10.1021/ol201679f

  日期：2011.8.19

  A range of cyclic N-alkyl imines were efficiently hydrogenated by using a chiral cationic Ru(η6-cymene)(MsDPEN)(BArF) complex (MsDPEN = N-(methanesulfonyl)-1,2-diphenylethylenediamine) in high yields and up to 98% ee. A one-pot synthesis of chiral 2-phenylpyrrolidine via reductive amination was also developed.

  环状的范围ñ -烷基亚胺是通过有效地使用手性阳离子钌氢化（η 6 -cymene）（MsDPEN）（BARF）配合物（MsDPEN = ñ - （甲磺酰基）-1,2-二苯基乙二胺）以高产率和高达到98％ee。还开发了通过还原胺化一锅法合成手性2-苯基吡咯烷。
• An Experimental and in Situ IR Spectroscopic Study of the Lithiation–Substitution of <i>N</i>-Boc-2-phenylpyrrolidine and -piperidine: Controlling the Formation of Quaternary Stereocenters
  作者：Nadeem S. Sheikh、Daniele Leonori、Graeme Barker、James D. Firth、Kevin R. Campos、Anthony J. H. M. Meijer、Peter O’Brien、Iain Coldham

  DOI：10.1021/ja211398b

  日期：2012.3.21

  enantioselective synthesis of 2-substituted 2-phenylpyrrolidines and -piperidines, an important class of pharmaceutically relevant compounds that contain a quaternary stereocenter, has been developed. The approach involves lithiation-substitution of enantioenriched N-Boc-2-phenylpyrrolidine or -piperidine (prepared by asymmetric Negishi arylation or catalytic asymmetric reduction, respectively). The combined use

  已经开发了 2-取代的 2-苯基吡咯烷和 β-哌啶的一般和对映选择性合成，这是一类重要的含有季立体中心的药学相关化合物。该方法涉及对映体富集的 N-Boc-2-苯基吡咯烷或 -哌啶（分别通过不对称 Negishi 芳基化或催化不对称还原制备）的锂化取代。合成实验和原位红外光谱监测的结合使用可以确定最佳锂化条件：n-BuLi 在 THF 中在 -50°C 下保持 5-30 分钟。使用原位红外光谱监测锂化表明，叔丁氧羰基 (Boc) 基团在 2-锂化吡咯烷中的旋转比在 2-锂化哌啶中慢；N-Boc-2-苯基吡咯烷在-78°C 的锂化取代率低可归因于这种缓慢旋转。对于 N-Boc-2-苯基吡咯烷和 -哌啶，使用密度泛函理论计算和变温 (1) H NMR 光谱确定 Boc 基团的旋转障碍。对于吡咯烷，发现 Boc 基团旋转的半衰期 (t(1/2)) 在 -78°C 下为 ~10 小时，在 -50°C