| 165750-13-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• CAS: 165750-13-0
• 化学式: C₆₂H₆₇N₂P₄W*Cl
• 分子量: 1183.43
• InChiKey: SMKSWSWGGKDRRF-UHFFFAOYSA-M

反应信息

• 作为产物：
  描述：

  trans-[W(CNt-Bu)2(1,2-bis(diphenylphosphino)ethane)2] 在 盐酸 作用下， 以 四氢呋喃 为溶剂， 生成
  参考文献：
  名称：

  Aminocarbyne coupling reactions at M(Ph2PCH2CH2PPh2)2(M = Mo or W) sites. Detailed mechanistic studies on the protonation of co-ordinated isocyanides and coupling of ligands in trans-[M(CNR)2(Ph2PCH2CH2PPh2)2](R = But or Me)

  摘要：

  The mechanism of protonation of trans-[M(CNR)(2)(dppe)(2)] (M = Mo or W, R = Me or Bu(t), dppe = Ph(2)PCH(2)CH(2)PPh(2)) has been shown to involve the initial rapid protonation of an isocyanide ligand to form trans-[M(CNHR)(CNR)(dppe)(2)](+) which can then undergo rate-limiting intramolecular migration of the hydrogen to form [MH(CNR)(2)(dppe)(2)](+). For trans-[Mo(CNBu(t))(2)(dppe)(2)] an additional acid-catalysed pathway is observed involving the intermediate [MoH(CNHBu(t))(CNBu(t))(dppe)(2)](2+) which subsequently rapidly releases a proton from the aminocarbyne to produce the hydride complex. The formation of the diaminoacetylene complex, trans-[MoCl(eta(2)-MeHNC=CNHMe)(dppe)(2)](+) occurs in three distinct steps. First is the rapid protonation of the isocyanide ligand to form trans-[Mo(CNHMe)(CNMe)(dppe)(2)](+), which at low concentrations of acid undergoes intramolecular hydrogen migration to produce the hydride complex but at high acid concentrations rapidly forms trans-[Mo(CNHMe)(2)(dppe)(2)](2+). It is this bis(aminocarbyne) species which in the second step is attacked by Cl- and subsequently undergoes intramolecular trans to cis isomerisation followed by coupling of the aminocarbyne ligands to form the product, trans-[MoCl(eta(2)-MeHNC=CNHMe)(dppe)(2)](+).

  DOI：

  10.1039/dt9950001193