S-2-吡啶基3-甲基硫代丁酸酯 | 139007-44-6

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫醚类
• 中文名称: S-2-吡啶基3-甲基硫代丁酸酯
• 英文名称: S-(2-pyridinyl) 3-methylbutanethioate
• 英文别名: S-(2-Pyridyl) 3-methylbutanethioate；S-Pyridin-2-yl 3-methylbutanethioate
• CAS: 139007-44-6
• 化学式: C₁₀H₁₃NOS
• 分子量: 195.285
• InChiKey: QBCAXARDGCBUST-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  55.3
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  S-2-吡啶基3-甲基硫代丁酸酯 、 [(S)-2-(tert-Butyl-dimethyl-silanyloxy)-prop-(E)-ylidene]-(4-methoxy-phenyl)-amine 在 四氯化钛 、 三乙胺 作用下， 生成 1-(4-methoxyphenyl)-3-(1-methylethyl)-4-<1-<<(1,1-dimethylethyl)dimethylsilyl>oxy>ethyl>azetidin-2-one
  参考文献：
  名称：

  Stereoselective synthesis of .beta.-lactams by condensation of titanium enolates of 2-pyridyl thioesters with imines

  摘要：

  A mild and versatile one-pot synthesis of beta-lactams has been performed by condensation of the easily generated titantium enolates of 2-pyridyl thioesters with imines employing chiral reaction partners. Both imines obtained from enantiomerically pure alkoxy aldehydes and the enolate derived from 3-hydroxybutyrate showed high diastereofacial preferences, efficiently transferring the stereochemical information to the stereocenters of the azetidinone ring. Advanced precursors of (+)-PS-5, (+)-PS-6, thienamycin, and 1-beta-methylthienamycin were prepared to illustrate the potential of this method. A H-1-NMR study of the enolization process and a tentative rationalization of the stereochemical results are presented.

  DOI：

  10.1021/jo00041a019
• 作为产物：
  描述：

  2-巯基吡啶 、 异戊酸 在 4-二甲氨基吡啶 、 N,N'-二环己基碳二亚胺 作用下， 以 四氢呋喃 为溶剂， 反应 12.0h， 以49%的产率得到S-2-吡啶基3-甲基硫代丁酸酯
  参考文献：
  名称：

  光驱动的维生素B12催化的2-S-吡啶基硫代酯的酰基自由基生成

  摘要：

  酰基是有机合成中不可估量的中间体，但是它们的产生仍然具有挑战性。本文中，我们提出了一种空前的光驱动，钴催化的方法，用于从易于获得的2- S-吡啶基硫代酯中生成酰基自由基。该方法的合成潜力已在庚二酸七甲酯存在下活化烯烃的Giese型酰化反应中得到了证明。这种维生素B 12衍生物被证明是研究过程中最有效的催化剂。所开发的方法具有广泛的底物范围（38个示例），良好的官能团耐受性和温和的反应条件。此外，它易于扩展（在20倍的放大过程中进行了说明），从而可以进行准备性使用。机理研究表明，该反应通过自由基途径进行，关键步骤涉及酰基维生素B 12络合物的形成以及随后的Co-C键光解。

  DOI：

  10.1002/adsc.201700913

文献信息

• Stereoselective synthesis of β-lactams by condensation of titanium enolates of 2-pyridyl thioesters with imines bearing a chiral auxiliary
  作者：Rita Annunziata、Maurizio Benaglia、Mauro Cinquini、Franco Cozzi、Laura Raimondi

  DOI：10.1016/s0040-4020(01)85521-6

  日期：——

  tested as chiral auxiliaries in the stereoselective synthesis of β-lactams by condensation of the titanium enolates of 2-pyridyl thioesters with chiral imines. The amines were selected among the following classes of compounds: benzylic amines, β-aminoalcohols, β-heterosubstituted α-aminoesters. Inexpensive and available in both enantiomeric forms α-methylbenzylamine was identified as the chiral auxiliary

  通过2-吡啶基硫酯的烯醇钛与手性亚胺的缩合，β-内酰胺的立体选择性合成中已测试了几种胺作为手性助剂。胺选自以下化合物：苄基胺，β-氨基醇，β-杂取代的α-氨基酯。廉价且可以两种对映体形式获得的α-甲基苄胺被鉴定为手性助剂，通常结合了良好的反应性和令人满意的立体控制水平。为了说明该方法的潜力，制备了肾素抑制剂成分的前体。介绍了立体化学结果的初步合理化。
• Highly diastereoselective synthesis of β-lactams by addition of titanium enolates of 2-pyridyl thioesters to chiral imines
  作者：Rita Annunziata、Mauro Cinquini、Franco Cozzi、Pier Giorgio Cozzi

  DOI：10.1016/s0040-4039(00)91874-4

  日期：1992.2

  Addition of titanium enolates of 2-pyridyl thioesters to chiral imines derived from alkoxy aldehydes occurs with good diastereofacial control, and opens a simple access to important carbapenem antibiotics.

  将2-吡啶基硫酯的钛烯醇盐添加到衍生自烷氧基醛的手性亚胺中，可以很好地控制非对映表面，从而轻松获得重要的碳青霉烯类抗生素。
• Diastereoselective aldol condensation of silyl ketene acetal of 2-pyridyl thioester with benzaldehyde
  作者：Kwee-Hyun Suh、Dong-Joon Choo

  DOI：10.1016/0040-4039(95)01231-6

  日期：1995.8

  The TiCl4-mediated aldol reaction of the (E)-O-silyl ketene-O,S-acetal derived from 2-pyridyl thioester with benzaldehyde gave exclusively syn-aldol product. In contrast, BF3-mediated reaction afforded the corresponding anti-isomer as a major product. Chelation and acyclic transition state are postulated in order to explain the observed selectivities.

  由2-吡啶基硫酯衍生的（E）-O-甲硅烷基烯酮-O，S-缩醛与苯甲醛的TiCl 4介导的醇醛缩合反应仅得到顺式-醛醇缩合产物。相反，BF 3介导的反应提供了相应的反异构体作为主要产物。假定螯合和无环过渡态是为了解释观察到的选择性。
• Stereoselective synthesis of β-lactams by condensation of titanium enolates of 2-pyridylthioesters with imines bearing a chiral auxiliary
  作者：Rita Annunziata、Maurizio Benaglia、Mauro Cinquini、Franco Cozzi、Laura Raimondi

  DOI：10.1016/s0040-4039(00)91831-8

  日期：1993.10

  Addition of the titanium enolates of 2-pyridylthioesters to imines featuring easily removable chiral auxiliaries affords β-lactams in a highly stereoselective fashion.

  在具有易于除去的手性助剂的亚胺中加成2-吡啶硫基钛酸酯的烯醇钛化物，可以以高度立体选择性的方式提供β-内酰胺。
• Synthesis of β-lactams by condensation of the tin enolates of 2-pyridylthioesters with imines. A comparison between titanium and tin enolates
  作者：Rita Annunziata、Maurizio Benaglia、Mauro Cinquini、Franco Cozzi、Laura Raimondi

  DOI：10.1016/s0040-4020(01)85649-0

  日期：1994.1

  SnBr4 affords the corresponding tin(IV) enolates that add to imines to give β-lactams in fair to good yields and with various degree of trans/cis stereoselectivity. Examples of highly diastereofacially selective reactions carried out on a chiral thioester and on a chiral imine are also reported. The results are compared with those obtained in the condensations promoted by TiCl4 and TiBr4.

  将三乙胺加到2-吡啶基硫代酯和SnCl 4或SnBr 4的混合物中，得到相应的锡（IV）烯醇盐，它们加到亚胺上，以公平至良好的收率和不同程度的反式/顺式立体选择性得到β-内酰胺。还报道了在手性硫酯和手性亚胺上进行的高度非对映选择性反应的实例。将结果与由TiCl 4和TiBr 4促进的缩合中获得的结果进行比较。