| 176697-29-3

• CAS: 176697-29-3
• 化学式: C₁₉H₂₈OPTa
• 分子量: 484.352
• InChiKey: YSFAAAZUNSJATE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
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• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
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• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  六羰基钨 、 在 THF 作用下， 以 四氢呋喃 为溶剂， 以69%的产率得到(1-tBu-3,4-Me2C5H2)(C5H5)Ta(CO)(μ-PMe2)W(CO)5
  参考文献：
  名称：

  Optically Active Bimetallic Complexes with a Tantalum Atom as a Chiral Center. Synthesis, Characterization, and X-ray Structures of Two Diastereoisomers:  Cp‘CpTa*(CO)(μ-PMe₂)W(CO)₄L* (Cp‘ = 1-^tBu-3,4-Me₂-C₅H₂; L* = (R)-(+)-Phenyl(o-anisyl)methylphosphine (PAMP))

  摘要：

  Reaction of the racemic metallophosphine Cp'CpTa(CO)(PMe(2)) (1; Cp' = 1-(t)Bu-3,4-Me(2)-C5H2) with the tungsten fragment [W(CO)(5)] affords the corresponding mu-bimetallic phosphido complex 2, which in a photochemical transformation gives the dibridged derivative Cp'CpTa-(mu u-CO)(mu-PMe(2))W(CO)(4) (3). Addition of an optically active phosphine (PAMP) to 3 leads to a pair of optically active diastereoisomers (4a and 4b) which can be separated by fractionnal crystallization. Both diastereoisomers 4a and 4b crystallize in the orthorhombic noncentrosymmetric space group P2(1)2(1)2(1). X-ray structure determinations of 4a and 4b allowed the assignment of absolute configurations of the tantalum chiral centers (S for 4a and R for 4b). The absolute configuration of the phosphorus atom of the PAMP ligand is the same (S) in both structures.

  DOI：

  10.1021/om9600497