| 207567-74-6

• CAS: 207567-74-6
• 化学式: C₂₀H₃₁ClOTi
• 分子量: 370.799
• InChiKey: DLRPCECSHOHOLC-UHFFFAOYSA-L

反应信息

• 作为产物：
  描述：

  pentacarbonyl((ethoxy)(methyl)carbene)chromium(0) 、 decamethyltitanocenemethylvinyl 以 正己烷 为溶剂， 以20%的产率得到
  参考文献：
  名称：

  Intermolecular coupling reactions of inversely polarized carbene ligands starting from the Cp2*TiCCH2 intermediate and chromium carbene complexes

  摘要：

  The titanaallene intermediate [Cp-2*Ti=C=CH2] (2), generated thermally from Cp-2*Ti(CH=CH2)CH3 (1), reacts with methoxyalkyl carbene complexes (CO)(5)Cr=C(OCH3)R (3) [R = CH3 (a), CD3 (b), Et (c)] by CC-coupling of the carbene ligands to give the heterodinuclear complexes Cp-2* <(TiCH2C(=C(OCH3)R)C(=Cr(CO)(5))O)over bar> (4) and Cp-2*<(TiCH2C(=C(mu-OCH3)R)C(=Cr(CO)(4))O)over bar> (5). An unusual isomerization of the exocyclic double bond, which occurs by thermal conversion 4c --> 5c, can be explained considering ionic resonance forms. The addition of one CO molecule to 5c leads to a displacement of the methoxy coordination. On the other hand, the aminocarbene complex (CO)(5)Cr=C((NHPr)-Pr-1)CH3 (8), which is less electrophilic than alkoxycarbenes, reacts with 2 to give a dinuclear dititanacyclobutene complex (9). Its blue-violet colour is probably caused by a twist around the single bond C(beta)-C(beta) of the dititanacyclobutene unit. (C) 1998 Elsevier Science S.A.

  DOI：

  10.1016/s0022-328x(97)00638-4