(1R,4R)-1,4-bis(3,5-bis(trifluoromethyl)phenyl)butane-1,4-diol | 1451012-49-9

• 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: (1R,4R)-1,4-bis(3,5-bis(trifluoromethyl)phenyl)butane-1,4-diol
• 英文别名: (1R,4R)-1,4-bis[3,5-bis(trifluoromethyl)phenyl]butane-1,4-diol；(1R,4R)-1,4-Bis[3,5-bis(trifluoromethyl)phenyl]-1,4-butanediol
• CAS: 1451012-49-9
• 化学式: C₂₀H₁₄F₁₂O₂
• 分子量: 514.311
• InChiKey: GPYDUEWWDCFRAF-HZPDHXFCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.2
• 重原子数：
  34
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  14

反应信息

• 作为反应物：
  描述：

  (1R,4R)-1,4-bis(3,5-bis(trifluoromethyl)phenyl)butane-1,4-diol 在 sodiumsulfide nonahydrate 、 三乙胺 作用下， 以 乙醇 、 二氯甲烷 为溶剂， 反应 1.5h， 生成 (2S,5S)-2,5-bis[3,5-bis(trifluoromethyl)phenyl]tetrahydrothiophene
  参考文献：
  名称：

  Explorations into the Potential of Chiral Sulfonium Reagents to Effect Asymmetric Halonium Additions to Isolated Alkenes

  摘要：

  While methods for the racemic dihalogenation and halohydroxylation of alkenes have been known for decades, enantioselective variants of these processes remain elusive. Initial attempts were made to overcome this long-standing challenge by exploring the potential of chiral, crystalline, sulfur-derived halonium reagents to accomplish the asymmetric dichlorination and iodohydroxylation of 1,2-dihydronaphthalene. Asymmetric dichlorination of this substrate was achieved in 57% yield and 14% enantiomeric excess (ee), but asymmetric iodohydroxylation was much more successful, giving 67% yield and 63% ee. Thorough studies were made of these processes, including investigation of various chiral sulfide derivatives, their substrate scopes, and the reaction conditions.

  DOI：

  10.1055/s-0033-1338865
• 作为产物：
  描述：

  (3,5-bis(trifluoromethyl)phenyl)lithium 在 硼酸三甲酯 、 (S)-(+)-alpha,alpha-二苯基脯氨醇 、 dimethyl sulfide borane 作用下， 以 四氢呋喃 、 乙醚 、 甲苯 为溶剂， 反应 1.5h， 生成 (1R,4R)-1,4-bis(3,5-bis(trifluoromethyl)phenyl)butane-1,4-diol
  参考文献：
  名称：

  Explorations into the Potential of Chiral Sulfonium Reagents to Effect Asymmetric Halonium Additions to Isolated Alkenes

  摘要：

  While methods for the racemic dihalogenation and halohydroxylation of alkenes have been known for decades, enantioselective variants of these processes remain elusive. Initial attempts were made to overcome this long-standing challenge by exploring the potential of chiral, crystalline, sulfur-derived halonium reagents to accomplish the asymmetric dichlorination and iodohydroxylation of 1,2-dihydronaphthalene. Asymmetric dichlorination of this substrate was achieved in 57% yield and 14% enantiomeric excess (ee), but asymmetric iodohydroxylation was much more successful, giving 67% yield and 63% ee. Thorough studies were made of these processes, including investigation of various chiral sulfide derivatives, their substrate scopes, and the reaction conditions.

  DOI：

  10.1055/s-0033-1338865

文献信息

• Mukaiyama-Michael Reactions with<i>trans</i>-2,5-Diarylpyrrolidine Catalysts: Enantioselectivity Arises from Attractive Noncovalent Interactions, Not from Steric Hindrance
  作者：Eeva K. Kemppainen、Gokarneswar Sahoo、Antti Piisola、Andrea Hamza、Bianka Kótai、Imre Pápai、Petri M. Pihko

  DOI：10.1002/chem.201304240

  日期：2014.5.12

  the predicted and observed stereoselectivities. The analysis of intermolecular forces reveals that the enantioselectivity is mostly due to stabilizing noncovalent interactions between the reacting partners, not due to steric hindrance. The role of attractive noncovalent interactions in enantioselective catalysis may be underappreciated.

  反式2,5-二苯基吡咯烷催化的对映选择性Mukaiyama-Michael反应的范围已扩大到包括α-和β-取代的Enals。但是，由于催化剂的空间位阻不是很强，因此观察到的对映选择性的合理化还远远不够。进行DFT计算以合理化观察到的立体选择性。作为C过渡态定位亚胺中间体和甲硅烷氧基呋喃之间的C键形成，并用它们的相对能量估算立体选择性数据。我们在预测和观察到的立体选择性之间发现了极好的一致性。分子间力的分析表明，对映选择性主要是由于稳定了反应伙伴之间的非共价相互作用，而不是由于空间位阻。有吸引力的非共价相互作用在对映选择性催化中的作用可能未被充分认识。
• Development of Chiral Bis-hydrazone Ligands for the Enantioselective Cross-Coupling Reactions of Aryldimethylsilanolates
  作者：Scott E. Denmark、Wen-Tau T. Chang、K. N. Houk、Peng Liu

  DOI：10.1021/jo502388r

  日期：2015.1.2

  aryldimethylsilanolates and aryl bromides result in biaryl products with the same configuration and similar enantioselectivities implying that reductive elimination is the stereodetermining step. The origin of stereoselectivity is rationalized through computational modeling of diarylpalldium(II) complex which occurs through a conrotatory motion for the two aryl groups undergoing C–C bond formation.

  已经开发出使用1-萘基二甲基硅烷醇盐和手性双-配体的钯催化，对映体选择性的芳基-芳基交叉偶联反应。制备了包含各种2，5-二芳基吡咯烷基团的乙二醛双-配体家族，以评估配体结构对交叉偶联的速率和对映选择性的影响。开发了新的1-氨基-2,5-二芳基吡咯烷酮合成路线，以进行结构/反应选择性研究。芳基二甲基硅烷醇化物和芳基溴化物的角色逆转实验导致联芳基产品具有相同的构型和相似的对映选择性，这表明还原消除是立体确定的步骤。