tert-butyl (R)-3-acetoxybutyrate | 120444-06-6

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: tert-butyl (R)-3-acetoxybutyrate
• 英文别名: (R)-3-acetoxy-butyric acid tert-butyl ester；tert-butyl (3R)-3-acetyloxybutanoate
• CAS: 120444-06-6
• 化学式: C₁₀H₁₈O₄
• 分子量: 202.251
• InChiKey: WYAGQRBMQSEZRH-SSDOTTSWSA-N

物化性质

• 沸点：
  190.4±13.0 °C(Predicted)
• 密度：
  1.006±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  14
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  tert-butyl (R)-3-acetoxybutyrate 在 palladium on activated charcoal 吡啶 、 氢气 、 sodium carbonate 作用下， 以 甲醇 、 乙醇 、 二氯甲烷 、 溶剂黄146 为溶剂， 反应 5.0h， 生成 (3R)-3-<<(3'R)-3'-hydroxybutanoyl>oxy>butanoic acid tert-butyl ester
  参考文献：
  名称：

  Synthesis and Structure of Linear and Cyclic Oligomers of 3-Hydroxybutanoic Acid with Specific Sequences of (R)- and (S)-Configurations

  摘要：

  To study the stereoselectivity of enzymatic cleavage of poly(3-hydroxybutyrates) (PHB) in a well-defined system (purified depolymerase and monodisperse substrate of specific relative configuration), linear and cyclic oligomers of HE (OHBs) containing (R)- and (S)-3-hydroxybutanoate residues were synthesized. The starting material (R)-HB was prepared from natural sPHB, and (S)-HB by enantioselective reduction of 3-oxobutanoate: with yeast or with H-2/Noyori-Taber catalyst (Scheme 2). The HE building blocks were then protected (O-benzyl/tert-butyl ester; Scheme 3) and coupled to give dimers 3, 4 tetramers 5-9, and octamers 10-18; for analytical comparison, a 3mer, 5mer, 6mer, and 7mer (19-22) were also prepared. Two of the tetramers were subjected to macrolactonization conditions (Yamaguchi) to give the cyclic tetramers 23 and 25 and octamers 24 and 26. All new compounds were fully characterized (m.p., [alpha](D), CD, IR, H-1- and C-13-NMR, MS, elemental analysis). Single-crystal X-ray structure analyses were performed with oligolides 24 and 25 ( Figs. 2 and 4), and the structures, as well as the crystal packing, were compared with those of analogs containing only (R)-HB units or consisting of 3-amino- instead of 3-hydroxybutanoic-acid moieties.

  DOI：

  10.1002/(sici)1522-2675(19981216)81:12<2430::aid-hlca2430>3.0.co;2-w
• 作为产物：
  描述：

  (R)-3-Acetoxybuttersaeure 在 吡啶 、 氯化亚砜 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 3.0h， 生成 tert-butyl (R)-3-acetoxybutyrate
  参考文献：
  名称：

  Synthesis and Structure of Linear and Cyclic Oligomers of 3-Hydroxybutanoic Acid with Specific Sequences of (R)- and (S)-Configurations

  摘要：

  To study the stereoselectivity of enzymatic cleavage of poly(3-hydroxybutyrates) (PHB) in a well-defined system (purified depolymerase and monodisperse substrate of specific relative configuration), linear and cyclic oligomers of HE (OHBs) containing (R)- and (S)-3-hydroxybutanoate residues were synthesized. The starting material (R)-HB was prepared from natural sPHB, and (S)-HB by enantioselective reduction of 3-oxobutanoate: with yeast or with H-2/Noyori-Taber catalyst (Scheme 2). The HE building blocks were then protected (O-benzyl/tert-butyl ester; Scheme 3) and coupled to give dimers 3, 4 tetramers 5-9, and octamers 10-18; for analytical comparison, a 3mer, 5mer, 6mer, and 7mer (19-22) were also prepared. Two of the tetramers were subjected to macrolactonization conditions (Yamaguchi) to give the cyclic tetramers 23 and 25 and octamers 24 and 26. All new compounds were fully characterized (m.p., [alpha](D), CD, IR, H-1- and C-13-NMR, MS, elemental analysis). Single-crystal X-ray structure analyses were performed with oligolides 24 and 25 ( Figs. 2 and 4), and the structures, as well as the crystal packing, were compared with those of analogs containing only (R)-HB units or consisting of 3-amino- instead of 3-hydroxybutanoic-acid moieties.

  DOI：

  10.1002/(sici)1522-2675(19981216)81:12<2430::aid-hlca2430>3.0.co;2-w

文献信息

• Aminocyclopentadienyl Ruthenium Complexes as Racemization Catalysts for Dynamic Kinetic Resolution of Secondary Alcohols at Ambient Temperature
  作者：Jun Ho Choi、Yoon Kyung Choi、Yu Hwan Kim、Eun Sil Park、Eun Jung Kim、Mahn-Joo Kim、Jaiwook Park

  DOI：10.1021/jo0355799

  日期：2004.3.1

  tests in the racemization of (S)-4-phenyl-2-butanol showed that 7 is the most active catalyst, although the difference decreased in the DKR. Complex 4 was used in the DKR of various alcohols; at room temperature, not only simple alcohols but also functionalized ones such as allylic alcohols, alkynyl alcohols, diols, hydroxyl esters, and chlorohydrins were successfully transformed to chiral acetates. In

  Aminocyclopentadienyl钌复合物，其可以用作常温消旋催化剂与在动态动力学拆分仲醇的（DKR），脂肪酶是从环戊-2,4- dienimines合成的Ru 3（CO）12，和CHCl 3： [2,3,4,5-PH 4（η 5 -C 4 CNHR）]的Ru（CO）2 Cl（上4：R =我-Pr; 5：R = ñ -Pr; 6：R =吨-Bu ），[2,5-ME 2 -3,4--PH 2（η 5 -C 4 CNHR）]的Ru（CO）2 Cl（上7：R = i -Pr; 8：R = PH），和[2,3,4,5-PH 4（η 5 -C 4 CNHAr）]的Ru（CO）2 Cl（上9：Ar为p -NO 2 ç 6 ħ 4 ; 10： Ar ＝p- ClC 6 H 4；11：Ar ＝ Ph；12：Ar ＝p- OMeC 6 H 4；13：Ar ＝p- NMe 2 C 6 H 4）。外消旋
• An unexpected ruthenium complex and its unique behavior as catalyst in dynamic kinetic resolution of secondary alcohols
  作者：Qihui Chen、Chengye Yuan

  DOI：10.1039/b811627j

  日期：——

  A ruthenium complex was accidentally synthesized and its unique catalytic behavior in dynamic kinetic resolution of various types of secondary alcohols, particularly for those bearing additional functional groups, is described.

  意外合成了一种铑配合物，并描述了它在各种类型二级醇的动态动力学分辨中的独特催化行为，特别是对于那些具有额外功能团的二级醇。
• Synthesis of a novel ruthenium(ІІ) complex and its unique behaviors in enzymatic dynamic kinetic resolution of secondary alcohols
  作者：Qihui Chen、Chengye Yuan

  DOI：10.1016/j.tet.2010.03.069

  日期：2010.5

  was first prepared as an efficient catalyst in Candida Antarctica lipase B (CALB) mediated dynamic kinetic resolution (DKR) of secondary alcohols. With the aid of this ruthenium complex 3, (S)-1-phenylethanol was completely racemized within 25 min, and in combination with CALB, series of secondary alcohols bearing various functional groups were resolved in an efficient DKR manner. A detailed mechanism

  首先制备了环戊二烯基苯甲酰基钌（ІІ）配合物3作为南迪假丝酵母脂肪酶B（CALB）介导的仲醇动力学动力学拆分（DKR）的有效催化剂。借助于该钌配合物3，（S）-1-苯基乙醇在25分钟内完全消旋，并与CALB结合，以有效的DKR方式拆分了一系列带有各种官能团的仲醇。提出了涉及C–H键激活的详细机制，以形成复合物3通过捕获此途径中的关键中间体。进行了相关的机理研究，以说明这种类型的DKR催化剂是基于仲醇的外消旋作用。其结构的新颖性，独特的催化性能以及在各种底物上的广泛应用以及更高的效率，使络合物3成为了DKR工艺中常用的那些络合物的重要替代品。
• Lipase/Ruthenium-Catalyzed Dynamic Kinetic Resolution of Hydroxy Acids, Diols, and Hydroxy Aldehydes Protected with a Bulky Group
  作者：Mahn-Joo Kim、Yoon Kyung Choi、Min Young Choi、Mi Jung Kim、Jaiwook Park

  DOI：10.1021/jo0156417

  日期：2001.6.1
• Synthesis and Structure of Linear and Cyclic Oligomers of 3-Hydroxybutanoic Acid with Specific Sequences of (R)- and (S)-Configurations
  作者：Beat M. Bachmann、Dieter Seebach

  DOI：10.1002/(sici)1522-2675(19981216)81:12<2430::aid-hlca2430>3.0.co;2-w

  日期：1998.12.16

  To study the stereoselectivity of enzymatic cleavage of poly(3-hydroxybutyrates) (PHB) in a well-defined system (purified depolymerase and monodisperse substrate of specific relative configuration), linear and cyclic oligomers of HE (OHBs) containing (R)- and (S)-3-hydroxybutanoate residues were synthesized. The starting material (R)-HB was prepared from natural sPHB, and (S)-HB by enantioselective reduction of 3-oxobutanoate: with yeast or with H-2/Noyori-Taber catalyst (Scheme 2). The HE building blocks were then protected (O-benzyl/tert-butyl ester; Scheme 3) and coupled to give dimers 3, 4 tetramers 5-9, and octamers 10-18; for analytical comparison, a 3mer, 5mer, 6mer, and 7mer (19-22) were also prepared. Two of the tetramers were subjected to macrolactonization conditions (Yamaguchi) to give the cyclic tetramers 23 and 25 and octamers 24 and 26. All new compounds were fully characterized (m.p., [alpha](D), CD, IR, H-1- and C-13-NMR, MS, elemental analysis). Single-crystal X-ray structure analyses were performed with oligolides 24 and 25 ( Figs. 2 and 4), and the structures, as well as the crystal packing, were compared with those of analogs containing only (R)-HB units or consisting of 3-amino- instead of 3-hydroxybutanoic-acid moieties.