trans-[W(CO)(1,2-bis(diphenylphosphino)ethane)2(CCSnMe3)] | 1258305-56-4

• 英文名称: trans-[W(CO)(1,2-bis(diphenylphosphino)ethane)2(CCSnMe3)]
• CAS: 1258305-56-4
• 化学式: C₅₈H₅₇OP₄SnW
• 分子量: 1196.55
• InChiKey: CNIZIPULJHKWOX-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  cis-[W(CO)(1,2-bis(diphenylphosphino)ethane)2(C=C(SnMe3)2)] 以 苯 为溶剂， 以52%的产率得到trans-[W(CO)(1,2-bis(diphenylphosphino)ethane)2(CCSnMe3)]
  参考文献：
  名称：

  [W(CO)(dppe)₂] Cumulenylidene and Acetylide Complexes Accessed via Stannylated Acetylenes and Butadiynes

  摘要：

  The tungsten butatrienylidenes [cis-W(CO)(dppe)(2){C=C=C=C(R)(SnMe3)}] (R = SnMe3 (2) and SiMe3 (3); dppe = 1,2-bis(diphenylphosphinoethane)) were prepared from the reactions of [trans-W(CO)(N-2)(dppe)(2)] (1) and the respective butadiynes displaying a 1,4-shift of the respective SnMe3 groups along the butadiyne chains. Stannyl deprotection of 2 with NBu4F center dot 3H(2)O led to the anionic butadiyne derivative [trans-W(CO)(dppe)(2)(C CC CH)][NBu4] (10). The reaction of 1 with stannylated acetylenes gave the vinylidene derivatives [cis-W(CO)(dppe)(2){C=C(SnMe3)(R)}](R = Ph (5) or SnMe3 (6)), which lost a SnMe3 group, yielding W(I) acetylides of the type [trans-W(CO)(dppe)(2)(C CR)] (R = Ph (7), SnMe3 (8), and SiMe3 (9)). They were studied by cyclic voltammetry and EPR spectroscopy.

  DOI：

  10.1021/om100702x