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Cp2Zr(OTf)2 | 94728-52-6

中文名称
——
中文别名
——
英文名称
Cp2Zr(OTf)2
英文别名
Cyclopenta-1,3-diene;trifluoromethanesulfonate;zirconium(4+)
Cp2Zr(OTf)2化学式
CAS
94728-52-6
化学式
C12H10F6O6S2Zr
mdl
——
分子量
519.554
InChiKey
HQYNVPYRFAFLLG-UHFFFAOYSA-L
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    2.91
  • 重原子数:
    27
  • 可旋转键数:
    0
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.17
  • 拓扑面积:
    131
  • 氢给体数:
    0
  • 氢受体数:
    14

反应信息

  • 作为产物:
    描述:
    bis(cyclopentadienyl)dimethylzirconium(IV) 、 三氟甲磺酸乙醚 为溶剂, 以75%的产率得到Cp2Zr(OTf)2
    参考文献:
    名称:
    锆茂双(三氟甲磺酸酯)催化剂催化恶唑烷酮二烯亲和物的Diels-Alder反应:不对称诱导机理
    摘要:
    烯基-恶唑烷酮3和二烯之间的Diels-Alder环加成反应可通过CH 2 Cl 2或硝基烷烃溶剂中的锆茂双(三氟甲磺酸酯)催化剂(4和8)有效地催化。手性催化剂[ S ] -8的使用在衍生自双亲二烯3和环戊二烯的加合物中导致明显的不对称诱导,但仅在硝基烷溶液中在低温和较低催化剂负载下才产生。通过1 H,13 C和19对丙烯酰基恶唑烷酮3a与8的结合进行了详细研究在CD 2 Cl 2和硝基烷烃溶剂中的F NMR光谱。这些研究表明,在两种溶剂中,由3a和8形成两个同分异构的五配位单三氟甲磺酸酯络合物(9a和9b)。次要异构体(9a)的氨基甲酸酯C O在中心部位与金属配位,而在主要异构体(9b)中,氨基甲酸酯C 0与侧位配位。在硝基甲烷溶剂中,−30°C时9a:9b≈1:2.6的比率,而在CD 2 Cl 2中该比率为〜1:6.7。这些研究以及观察到的不对称诱导的意义表明,在催化条件下,次要异构
    DOI:
    10.1021/om970916n
  • 作为试剂:
    参考文献:
    名称:
    Mukaiyama Aldol Reactions Catalyzed by Zirconocene Bis(triflate) Complexes:  Stereochemistry and Mechanisms for C−C Bond Formation
    摘要:
    The aldol condensations of alpha- and beta-(benzyloxy) aldehydes with enol silanes, catalyzed by Cp2Zr(OTf)(2) . THF or Cp2Zr(OTf)(2), in a variety of solvents were studied. The simple diastereoselectivity of these reactions is modest and comparable to that observed using simple aldehydes of similar steric requirements. Studies have revealed that TMSOTf is directly produced on reaction with the zirconocene catalyst with the enol silane in nitroalkane solvent or is formed during catalysis in dichloromethane solution. Although TMSOTf is known to catalyze cross-aldol reactions under these conditions, the rate of this process is not always competitive with that observed using the zircanocene catalysts. In particular, sterically unhindered or aromatic aldehydes react via a mechanism that appears to be mainly Zr-catalyzed, based on both the difference in rate between Zr- and Si-mediated reactions as well as differences in enol silane/silyl triflate reactivity in crossover-type experiments. With sterically hindered aldehydes in dichloromethane or nitromethane, catalysis is mediated by Si. The Zr-catalyzed process occurs via formation of a Zr-aldolate complex from aldehyde and enol silane, with liberation of TMSOTf, followed by rate-limiting O-silylatian of the metal aldolate by TMSOTf, as revealed by both model studies and in situ monitoring during catalysis.
    DOI:
    10.1021/jo971803g
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文献信息

  • Preparation and physical properties of early-late heterobimetallic compounds featuring Ir–M bonds (M = Ti, Zr, Hf)
    作者:John J. Curley、Robert G. Bergman、T. Don Tilley
    DOI:10.1039/c1dt11753j
    日期:——
    Treatment of Cp*Ir NtBu (1) with the appropriate metallocene equivalent is an effective route for the preparation of the heterobimetallic complexes Cp*Ir(μ-NtBu)MCp2 (2-M, M = Ti, Zr, Hf). The electronic structures of the isostructural series of compounds, 2-M, are described with reference to single-crystal X-ray, Raman, UV-vis, and cyclic voltammetry data. Density functional theory (DFT) calculations
    CP *N中的治疗吨卜(1用适当的属茂当量)为双核配合物的CP *的Ir(μ-N的制备一种有效的途径吨丁基)MCP 2(2 -M,M =, Hf)。参照单晶X射线,拉曼光谱,紫外可见光谱和循环伏安法数据描述了化合物的同构系列2- M的电子结构。密度泛函理论(DFT)计算被用来帮助解释这项实验工作。用处理或ha同类物2,6-lut啶鎓三氟甲磺酸引线到IR-M键的质子化,得到的CP *的Ir(μ-N吨卜)(μ-H)MCP 2光学传递函数(3 -M,M =)。化合物3- Zr通过单晶X射线衍射表征,并通过在Me 3 SiOTf存在下1与CP 2 Zr(H)Cl的反应独立制备。在类似于2 -Zr的反应中,2 -Hf与S 8和芳基叠氮化物反应,将S原子或芳基叠氮化物片段插入属-属键中,从而生成CP * Ir(μ- Nt Bu)(μ -S)HfCP 2(6 -HF)1和CP *的Ir(μ-N吨卜)(N
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