3,3',4,4'-tetramethyl-2,2'-bis(ethoxycarbonyl)-1,1'-diphosphaferrocene | 1019780-95-0

• 英文名称: 3,3',4,4'-tetramethyl-2,2'-bis(ethoxycarbonyl)-1,1'-diphosphaferrocene
• CAS: 1019780-95-0
• 化学式: C₁₈H₂₄FeO₄P₂
• 分子量: 422.181
• InChiKey: MCCTVNOPYIXVSR-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  Potassium;ethyl 3,4-dimethyl-1-phosphanidacyclopenta-2,4-diene-2-carboxylate 、 iron(II) chloride 在 ZnCl₂ 作用下， 以 四氢呋喃 为溶剂， 以33%的产率得到3,3',4,4'-tetramethyl-2,2'-bis(ethoxycarbonyl)-1,1'-diphosphaferrocene
  参考文献：
  名称：

  From Functional Phospholide Ions to Bifunctional 1,1′-Diphosphaferrocenes

  摘要：

  Both the 2-ethoxycarbonyl and the 2-benzoyl phospholides (1 and 2) react with FeCl(2) in the presence of ZnCl(2) to give the corresponding 2,2'-difunctional 1,1'-diphosphaferrocenes as mixtures of meso and rac diastereomers. Stable rotamers are also detected by (1)H and (13)C NMR spectroscopy. Under the same conditions, the 2,5-bis(ethoxycarbonyl)phospholide (3) gives the tetrafunctional 1,1'-biphospholyl (6). The diphosphaferrocenes and the 1,1'-biphospholyl are probably formed from a common type of intermediates with a bis(eta(1) -phospholyl)iron structure. DFT computations indicate that this kind of intermediate is pyramidal at P and only weakly aromatic.

  DOI：

  10.1021/om7012474