(3S,4S)-4-[N-(tert-butoxycarbonyl)amino]-5-phenyl-pent-1-yn-3-ol | 161828-21-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (3S,4S)-4-[N-(tert-butoxycarbonyl)amino]-5-phenyl-pent-1-yn-3-ol
• 英文别名: tert-butyl N-[(2S,3S)-3-hydroxy-1-phenylpent-4-yn-2-yl]carbamate
• CAS: 161828-21-3
• 化学式: C₁₆H₂₁NO₃
• 分子量: 275.348
• InChiKey: SNKWYPGOPFBGHT-KBPBESRZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  20
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.44
• 拓扑面积：
  58.6
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (3S,4S)-4-[N-(tert-butoxycarbonyl)amino]-5-phenyl-pent-1-yn-3-ol 在 三乙胺 、 三氟乙酸 作用下， 以 氯仿 为溶剂， 反应 3.5h， 生成 (3S,4S)-4-[N-(4-methyl-phenylsulfonyl)amino]-5-phenyl-pent-1-yn-3-ol
  参考文献：
  名称：

  A Highly cis-Selective Synthesis of 2-Ethynylaziridines by Intramolecular Amination of Chiral Bromoallenes:  Improvement of Stereoselectivity Based on the Computational Investigation

  摘要：

  The base-mediated intramolecular amination of bromoallenes having an axial chirality is described. The treatment of (4S,aR)-4-alkyl-4-[N-(arylsulfonyl)amino]-1-bromobuta-1,2-dienes with NaH in DMF affords 2,3-cis-2-ethynylaziridines in good to excellent selectivity (2,3-cis:trans = 92:8-99:1). The reaction of (4S,aS)-bromoallenes with NaH/DMF also gives 2,3-cis-2-ethynylaziridines selectively (79:21-91:9). These experimental results have been rationalized by 133LYP density functional calculations together with the 6-31 +G(d) basis set and the Onsager solvation model. The transition structures for cis-aziridine formation of both (4S,aR)- and (4S,aS)-bromoallenes in DMF are favored over the corresponding trans transition structures by 4.35 and 1.41 kcal/mol, respectively. Furthermore, the calculations predicted that a less polar solvent gives higher cis selectivity for (4S,aS)-bromoallenes. In fact, improvement of the cis selectivity to 99:1 has been realized by using a less polar solvent such as THF. The cyclization of bromoallenes bearing a beta- or gamma-amino group also affords four- and five-membered azacycles in a highly cis-selective manner.

  DOI：

  10.1021/ja0262277
• 作为产物：
  描述：

  N-Boc-L-苯丙氨醇 在 甲醇 、 正丁基锂 、 草酰氯 、 sodium methylate 、 二甲基亚砜 、 N,N-二异丙基乙胺 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 为溶剂， 反应 4.33h， 生成 (3S,4S)-4-[N-(tert-butoxycarbonyl)amino]-5-phenyl-pent-1-yn-3-ol
  参考文献：
  名称：

  A Highly cis-Selective Synthesis of 2-Ethynylaziridines by Intramolecular Amination of Chiral Bromoallenes:  Improvement of Stereoselectivity Based on the Computational Investigation

  摘要：

  The base-mediated intramolecular amination of bromoallenes having an axial chirality is described. The treatment of (4S,aR)-4-alkyl-4-[N-(arylsulfonyl)amino]-1-bromobuta-1,2-dienes with NaH in DMF affords 2,3-cis-2-ethynylaziridines in good to excellent selectivity (2,3-cis:trans = 92:8-99:1). The reaction of (4S,aS)-bromoallenes with NaH/DMF also gives 2,3-cis-2-ethynylaziridines selectively (79:21-91:9). These experimental results have been rationalized by 133LYP density functional calculations together with the 6-31 +G(d) basis set and the Onsager solvation model. The transition structures for cis-aziridine formation of both (4S,aR)- and (4S,aS)-bromoallenes in DMF are favored over the corresponding trans transition structures by 4.35 and 1.41 kcal/mol, respectively. Furthermore, the calculations predicted that a less polar solvent gives higher cis selectivity for (4S,aS)-bromoallenes. In fact, improvement of the cis selectivity to 99:1 has been realized by using a less polar solvent such as THF. The cyclization of bromoallenes bearing a beta- or gamma-amino group also affords four- and five-membered azacycles in a highly cis-selective manner.

  DOI：

  10.1021/ja0262277

文献信息

• Palladium(0)-Catalyzed Synthesis of Medium-Sized Heterocycles by Using Bromoallenes as an Allyl Dication Equivalent
  作者：Hiroaki Ohno、Hisao Hamaguchi、Miyo Ohata、Shohei Kosaka、Tetsuaki Tanaka

  DOI：10.1021/ja048693x

  日期：2004.7.1

  We have developed a highly regio- and stereoselective synthesis of medium-sized heterocycles containing one or two heteroatoms via cyclization of bromoallenes bearing an oxygen, nitrogen, or carbon nucleophilic functionality in the presence of a palladium(0) catalyst and alcohol. In this reaction, bromoallenes act as an allyl dication equivalent, and the intramolecular nucleophilic attack takes place

  我们开发了一种高度区域选择性和立体选择性合成的中等大小杂环，通过在钯 (0) 催化剂和醇的存在下，带有氧、氮或碳亲核官能团的溴丙二烯环化。在该反应中，溴丙二烯充当烯丙基双阳离子等价物，分子内亲核攻击仅发生在丙二烯部分的中心碳原子上。有趣的是，具有五原子系链的碳亲核试剂的溴丙二烯可提供具有反式构型的八元环，而具有氧或氮亲核试剂的溴丙二烯则选择性地提供相应的顺式环。这是第一个证明通过溴丙二烯环化合成中等大小环的例子，
• Diastereoselective Synthesis of N-Protected β-Amino-α-hydroxyacids (Norstatines) from Urethane N-Carboxyanhydrides (UNCAs)
  作者：Patrick Audin、Catherine Pothion、Jean-Alain Fehrentz、André Loffet、Jean Martinez、Joëlle Paris

  DOI：10.1039/a809421g

  日期：——

  β-Amino-α-hydroxyacids (norstatines) are prepared from urethane N-protected carboxyanhydrides (UNCAs); the key step is the diastereoselective reduction of a keto-acetylenic compound, which lead is, with syn diastereoselectivity, to the corresponding propargylic alcohol.

  β-氨基-α-羟基酸（去甲他汀）是由氨基甲酸酯N保护的羧基酸酐（UNCAs）制备的；关键步骤是将非对映异构体还原为酮-炔属化合物，该铅与非对映异构体选择性合成相应的炔丙醇。