(±)-(2R,3R)-methyl 3-methoxy-2,4-dimethylpentanoate | 101019-32-3

• 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: (±)-(2R,3R)-methyl 3-methoxy-2,4-dimethylpentanoate
• 英文别名: methyl (2R,3R)-3-methoxy-2,4-dimethylpentanoate
• CAS: 101019-32-3
• 化学式: C₉H₁₈O₃
• 分子量: 174.24
• InChiKey: KFGYSLIIJGGZKH-HTQZYQBOSA-N

物化性质

• 沸点：
  212.4±13.0 °C(Predicted)
• 密度：
  0.926±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  12
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  [(2R,3R)-1,3-dimethoxy-2,4-dimethyl-1-oxopentan-2-yl]mercury(1+);acetate 生成 (±)-(2R,3R)-methyl 3-methoxy-2,4-dimethylpentanoate
  参考文献：
  名称：

  GOUZOULES F. H.; WHITNEY R. A., J. ORG. CHEM., 51,(1986) N 11, 2024-2030

  摘要：

  DOI：

文献信息

• Diastereoselective Hydrogen-Transfer Reactions: An Experimental and DFT Study
  作者：François Godin、Michel Prévost、Serge I. Gorelsky、Philippe Mochirian、Maud Nguyen、Frédérick Viens、Yvan Guindon

  DOI：10.1002/chem.201300377

  日期：2013.7.8

  an equatorial orientation. Hydride deliveries to different acyclic substrates and calculations also suggest that the higher anti‐selectivities obtained with borinate intermediates are not related to the formation of a complex mimicking an exocycle. From a broader standpoint, this study reveals important conformational factors for reactions taking place at a center vicinal to a heterocycle or an α‐alkoxy

  将带有杂环exo（α）的卤代前体自由基还原为以碳为中心的自由基，会增强抗选择性，这种现象我们称为“环外效应”。在BHandHLYP / TZVP级别的新实验数据和DFT计算表明，环外效应的起源与自由基中间体在过渡态（ΔE ≠应变）达到其反应构象所需的应变能有关。此外，受约束的THP系统的自由基减少表明，较高的2,3-抗只有当自由基链处于赤道取向时，才能达到诱导作用。氢化物可递送至不同的非环状底物，并且计算结果还表明，硼酸盐中间体可获得更高的抗选择性，与模拟环外化合物的复合物的形成无关。从更广泛的角度来看，这项研究揭示了重要的构象因子，这些构象是在中心邻位发生的对杂环或α-烷氧基的反应。
• Diastereoselectivity in the SE2? reaction of chiral pentadienylsilanes: a test for the relative importance of steric and electronic effects
  作者：Ian Fleming、Graeme R. Jones、Nicholas D. Kindon、Yannick Landais、Colin P. Leslie、Ian T. Morgan、Stefan Peukert、Achintya K. Sarkar

  DOI：10.1039/p19960001171

  日期：——

  5E)-(hepta-3,5-dien-2-yl)dimethyl(phenyl)silane 9, (3Z,5E)-(hepta-3,5-dien-2-yl)trimethylsilane 13, (4Z,6E)-(2-methylocta-4,6-dien-3-yl)dimethyl(phenyl)silane 14 and (4Z,6E)-(2-methylocata-4,6-dien-3-yl)trimethylsilane 17 undergo Lewis acid catalysed reactions with isobutyraldehyde and its dimethyl acetal stereospecifically anti with surprisingly high levels of stereoselectivity, ca. 90:10. The pentadienylsilanes

  的纯手性pentadienylsilanes（3 Ž，5 ë） - （庚-3,5-二烯-2-基）二甲基（苯基）硅烷9，（3 Ž，5 ë） - （庚-3,5-二烯-2-基）三甲基硅烷13，（4 Z，6 E）-（2-甲基辛基-4,6-二烯-3-基）二甲基（苯基）硅烷14和（4 Z，6 E）-（2-甲基羰基-4， 6-二烯-3-基）三甲基硅烷17与异丁醛及其二甲基乙缩醛发生立体定向抗路易斯酸催化反应，其立体选择性出乎意料地高。90:10。戊二烯基硅烷（3 Z）-六-3,5-二烯-2-基二甲基（苯基）硅烷20aa，（4 Z）-（2-甲基庚-4,6-二烯-3-基）二甲基（苯基）硅烷20ab，（3 Z）-（六-3,5-二烯-2-基）-三甲基硅烷20ba和（2 Z） - （1- phenylpenta -2,4-二烯基）三甲基硅烷20Bc的经历偶极环加成到2,2-二甲基丙腈的氧化区域选择性地在末端双键和
• The Use of Lewis Acids in Radical Chemistry. Chelation-Controlled Radical Reductions of Substituted α-Bromo-β-alkoxy Esters and Chelation-Controlled Radical Addition Reactions
  作者：Yvan Guindon、J. Rancourt

  DOI：10.1021/jo980636x

  日期：1998.9.1

  The radical reduction of a series of alpha-bromo-beta-alkoxy esters under chelation-controlled conditions is reported. Proceeding with high stereoselectivity in the presence of MgBr2. OEt2, reductions give access to syn, products. Systematic variations in substrate substituents show that these reactions tolerate a wide variety of alkyl functionalities at positions 2 and 3 and are relatively unaffected by the nature of the ester group. Changes to the alkoxy function indicate that a bidentate chelate is involved in the reaction and that an excess of MgBr2. OEt2 is required for optimum selectivity by favoring this species in preference to the anti-selective monodentate or nonchelated pathways. Competition experiments suggest that the monodentate pathway is kinetically favored over the bidentate one. The suppressibility of the reaction by radical chain inhibitors and the need for initiation indicate the intermediacy of radicals. Further support for this mechanism includes both radical addition to alpha,beta-unsaturated esters and reduction of bromides conducted in the presence of a Lewis acid.
• Stereoselective demercuration of α-mercuriocarboxylates
  作者：Frederick H. Gouzoules、Ralph Allen Whitney

  DOI：10.1016/s0040-4039(00)98659-3

  日期：1985.1
• GOUZOULES, F. H.;WHITNEY, R. A., TETRAHEDRON LETT., 1985, 26, N 29, 3441-3444
  作者：GOUZOULES, F. H.、WHITNEY, R. A.

  DOI：——

  日期：——