(R,E)-undeca-1,4-dien-3-ylbenzene | 1005414-10-7

• 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: (R,E)-undeca-1,4-dien-3-ylbenzene
• CAS: 1005414-10-7
• 化学式: C₁₇H₂₄
• 分子量: 228.378
• InChiKey: AZCYCZXEGFVGCN-QSOAKEGCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.48
• 重原子数：
  17.0
• 可旋转键数：
  8.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.41
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  (R,E)-undeca-1,4-dien-3-ylbenzene 在 9-borabicyclo[3.3.1]nonane dimer 、 sodium hydroxide 、 双氧水 作用下， 以 四氢呋喃 为溶剂， 生成 (R,E)-3-phenyl-4-undecen-1-ol
  参考文献：
  名称：

  Highly Site- and Enantioselective Cu-Catalyzed Allylic Alkylation Reactions with Easily Accessible Vinylaluminum Reagents

  摘要：

  An efficient method for catalytic asymmetric allylic alkylation (AAA) of allylic phosphates with vinylaluminum reagents is reported. The vinylmetal reagents are prepared by reaction of commercially available DIBAL-H and a terminal alkyne. The resulting vinylaluminum reagent can be used directy, without isolation or purification. AAA reactions are promoted in the presence of 0.5-2.5 mol % of a readily available chiral N-heterocyclic carbene (NHC) complex and 1-5 mol % commercially available and air stable Cu salt (CUCl2-2H(2)O). The desired products are typically obtained within 2-12 h in 74% to 95% isolated yield, 77% to >98% ee, and in >98% E selectivity: >98% S(N)2' selectively is obtained in all but one instance (90%). The hydroalummation/catalytic AAA sequence can be performed in a single vessel, on gram scale.

  DOI：

  10.1021/ja0782192
• 作为产物：
  描述：

  1-辛炔 、 (E)-cinnamyl diethyl phosphate 在 NHC-Ag(I) complex 、 CuCl₂*2H₂O 二异丁基氢化铝 作用下， 以 正己烷 、 四氢呋喃 为溶剂， 反应 5.0h， 生成 (R,E)-undeca-1,4-dien-3-ylbenzene 、 (S,E)-undeca-1,4-dien-3-ylbenzene
  参考文献：
  名称：

  Highly Site- and Enantioselective Cu-Catalyzed Allylic Alkylation Reactions with Easily Accessible Vinylaluminum Reagents

  摘要：

  An efficient method for catalytic asymmetric allylic alkylation (AAA) of allylic phosphates with vinylaluminum reagents is reported. The vinylmetal reagents are prepared by reaction of commercially available DIBAL-H and a terminal alkyne. The resulting vinylaluminum reagent can be used directy, without isolation or purification. AAA reactions are promoted in the presence of 0.5-2.5 mol % of a readily available chiral N-heterocyclic carbene (NHC) complex and 1-5 mol % commercially available and air stable Cu salt (CUCl2-2H(2)O). The desired products are typically obtained within 2-12 h in 74% to 95% isolated yield, 77% to >98% ee, and in >98% E selectivity: >98% S(N)2' selectively is obtained in all but one instance (90%). The hydroalummation/catalytic AAA sequence can be performed in a single vessel, on gram scale.

  DOI：

  10.1021/ja0782192

文献信息

• A Broadly Applicable NHC–Cu-Catalyzed Approach for Efficient, Site-, and Enantioselective Coupling of Readily Accessible (Pinacolato)alkenylboron Compounds to Allylic Phosphates and Applications to Natural Product Synthesis
  作者：Fang Gao、James L. Carr、Amir H. Hoveyda

  DOI：10.1021/ja4126565

  日期：2014.2.5

  alkyl-substituted electrophiles bearing a di- or trisubstituted alkene may be employed. Reactions can involve a variety of robust alkenyl–(pinacolatoboron) [alkenyl–B(pin)] compounds that can be either purchased or prepared by various efficient, site-, and/or stereoselective catalytic reactions, such as cross-metathesis or proto-boryl additions to terminal alkynes. Vinyl-, E-, or Z-disubstituted alkenyl-, 1,1-disubstituted

  公开了一组用于催化对映选择性烯丙基取代（EAS）反应的方案，该反应允许将烯基单元添加到容易获得的烯丙基亲电试剂。转化产生含有叔碳立体位点的 1,4-二烯，并由 1.0-5.0 mol% 的 N-杂环卡宾 (NHC) 的铜配合物促进。可以使用带有二或三取代烯烃的芳基和烷基取代的亲电子试剂。反应可能涉及各种稳定的烯基-（频哪醇硼）[烯基-B（pin）] 化合物，这些化合物可以通过各种有效的、位点和/或立体选择性催化反应（例如交叉复分解或原位催化反应）购买或制备。硼烷基加成到末端炔烃。乙烯基-、E-或Z-二取代的烯基-、1,1-二取代的烯基-、无环的、或杂环三取代的烯基可以以高达 >98% 的产率、>98:2 SN2':SN2 和 99:1 的对映体比率 (er) 添加。尽管存在敏感的立体叔碳中心，NHC-Cu 催化的 EAS 与包含共轭羧酸酯或醛基的烯基-B(pin) 试剂继续以良好的产率和高对映选择性提供所需的