(S)-2-hydroxy-3-methylbutanamide | 132205-27-7

• 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: (S)-2-hydroxy-3-methylbutanamide
• 英文别名: 2-hydroxy-3-methylbutanamide；(2S)-2-hydroxy-3-methylbutanamide
• CAS: 132205-27-7
• 化学式: C₅H₁₁NO₂
• 分子量: 117.148
• InChiKey: WQPHBKCACJYXGG-BYPYZUCNSA-N

物化性质

• 沸点：
  259.9±23.0 °C(Predicted)
• 密度：
  1.063±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -0.1
• 重原子数：
  8
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  63.3
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (S)-2-hydroxy-3-methylbutanamide 在 草酰氯 、 三氟化硼乙醚 、 potassium carbonate 、 二甲基亚砜 、 三乙胺 作用下， 以 甲醇 、 乙醚 为溶剂， 反应 4.17h， 生成 Heterodendrin
  参考文献：
  名称：

  Facile Synthesis of Cyanogen Glycosides (R)-Prunasin, Linamarin and (S)-Heterodendrin.

  摘要：

  通过糖基化、羧酰胺脱水形成氰醇以及脱保护的三步反应，描述了从 O-(2,3,4,6-O-四乙酰基-α-D-吡喃葡萄糖基)三氯噻嗪酸和相应的 α-羟基酰胺合成氰苷（R）-普鲁纳辛、亚麻酰胺和（S）-heterodendrin 的简便合成路线。

  DOI：

  10.1271/bbb.62.453
• 作为产物：
  描述：

  氢氰酸 、 异丁醛 在 (S)-hydroxynitrile lyase from Manihot esculenta 、 nitrile hydratase from Nitriliruptor alkaliphilus 、 水 作用下， 生成 (S)-2-hydroxy-3-methylbutanamide 、 (+)-2-Hydroxy-3-methylbutansaeure-(1)-amid
  参考文献：
  名称：

  固定化的氧化硝化酶和腈水合酶的一锅双酶级联反应合成脂肪族（S）-α-羟基羧酸酰胺

  摘要：

  Abstractmagnified imageA one‐pot bienzymatic cascade combining a hydroxynitrile lyase (Manihot esculenta, E.C. 4.1.2.10) and a nitrile hydratase (Nitriliruptor alkaliphilus, E.C. 4.2.1.84) for the synthesis of enantiopure aliphatic α‐hydroxycarboxylic amides from aldehydes is described. Both enzymes were immobilised as cross‐linked enzyme aggregates (CLEAs). Stability tests show that the nitrile hydratase CLEAs are sensitive to water‐immiscible organic solvents as well as to aldehydes and hydrogen cyanide (HCN), but are remarkably stable and show useful activity in acidic aqueous environments of pH 4–5. The cascade reactions are consequently carried out by using a portionwise feed of HCN and moderate concentrations of aldehyde in acidic aqueous buffer to suppress the uncatalysed hydrocyanation background reaction. After optimisation, this method was used to synthesise five different kinds of aliphatic α‐hydroxycarboxylic amides from the corresponding aldehydes with good yields and with enantiomeric purities comparable to those obtained for the α‐hydroxynitriles in the microaqueous hydrocyanation using hydroxynitrile lyase and an excess of HCN.

  DOI：

  10.1002/adsc.200800625

文献信息

• Optical activity of lactones and lactams—II
  作者：T. Połoński

  DOI：10.1016/s0040-4020(01)91556-x

  日期：1983.1

  Several optically active 4-oxazolidinones were obtained from amides or N-methylamides of corresponding α-hydroxy acids. The influence of solvent and substituent on their CD was studied. The predominance of the envelope conformation was established for these compounds, the degree of puckering being enhanced by polar solvents. The folded form with the aromatic ring facing the oxazolidinone ring was observed

  从相应的α-羟基酸的酰胺或N-甲基酰胺获得几种旋光的4-恶唑烷酮。研究了溶剂和取代基对其CD的影响。对于这些化合物，确立了包膜构型的优势，通过极性溶剂提高了起皱的程度。对于5-苄基取代的恶唑烷酮衍生物，观察到具有芳环面对恶唑烷酮环的折叠形式。
• Mahler, Hellmut; Braun, Manfred, Chemische Berichte, 1991, vol. 124, # 6, p. 1379 - 1395
  作者：Mahler, Hellmut、Braun, Manfred

  DOI：——

  日期：——
• MAHLER, HELLMUT;BRAUN, MANFRED, CHEM. BER., 124,(1991) N, C. 1379-1395
  作者：MAHLER, HELLMUT、BRAUN, MANFRED

  DOI：——

  日期：——
• POLONSKI, T., TETRAHEDRON, 1983, 39, N 19, 3139-3143
  作者：POLONSKI, T.

  DOI：——

  日期：——
• Synthesis of Aliphatic (S)-α-Hydroxycarboxylic Amides using a One-Pot Bienzymatic Cascade of Immobilised Oxynitrilase and Nitrile Hydratase
  作者：Sander van Pelt、Fred van Rantwijk、Roger A. Sheldon

  DOI：10.1002/adsc.200800625

  日期：2009.2

  Abstractmagnified imageA one‐pot bienzymatic cascade combining a hydroxynitrile lyase (Manihot esculenta, E.C. 4.1.2.10) and a nitrile hydratase (Nitriliruptor alkaliphilus, E.C. 4.2.1.84) for the synthesis of enantiopure aliphatic α‐hydroxycarboxylic amides from aldehydes is described. Both enzymes were immobilised as cross‐linked enzyme aggregates (CLEAs). Stability tests show that the nitrile hydratase CLEAs are sensitive to water‐immiscible organic solvents as well as to aldehydes and hydrogen cyanide (HCN), but are remarkably stable and show useful activity in acidic aqueous environments of pH 4–5. The cascade reactions are consequently carried out by using a portionwise feed of HCN and moderate concentrations of aldehyde in acidic aqueous buffer to suppress the uncatalysed hydrocyanation background reaction. After optimisation, this method was used to synthesise five different kinds of aliphatic α‐hydroxycarboxylic amides from the corresponding aldehydes with good yields and with enantiomeric purities comparable to those obtained for the α‐hydroxynitriles in the microaqueous hydrocyanation using hydroxynitrile lyase and an excess of HCN.