pentacarbonyl(1,3-dibenzylimidazolidin-2-ylidene)tungsten | 228088-61-7

• 英文名称: pentacarbonyl(1,3-dibenzylimidazolidin-2-ylidene)tungsten
• 英文别名: [W(CO)5(1,3-dibenzyl-4,5-dihydroimidazol-2-ylidene)]；[(sat-NHC-Bn)W(CO)5]
• CAS: 228088-61-7
• 化学式: C₂₂H₁₈N₂O₅W
• 分子量: 574.245
• InChiKey: PGBBIXXYNSFYMP-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：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  pentacarbonyl(1,3-dibenzylimidazolidin-2-ylidene)tungsten 在 AgBF₄ 、 LiCl 作用下， 以 二氯甲烷 、 乙腈 为溶剂， 生成 cis-[PdCl₂(1,3-dibenzylimidazole)2]
  参考文献：
  名称：

  Biscarbene Palladium(II) Complexes. Reactivity of Saturated Versus Unsaturated N-Heterocyclic Carbenes

  摘要：

  A series of designed palladium biscarbene complexes including saturated and unsaturated N-heterocyclic carbene (NHC) moieties have been prepared by the carbene transfer methods. All of these complexes have been characterized by H-1 and C-13 NMR spectroscopy as well as X-ray diffraction analysis, The reactivity of Pd-C-(saturated NHC) is distinct from that of Pd-C-(unsaturated NHC). The Pd-C-(saturated NHC) bonds are fairly stable toward reagents such as CF3COOH, AgBF4 and I-2, whereas Pd-C-(unsaturated NHC) bonds are readily cleaved under the similar conditions. Notably, the catalytically activity of these palladium complexes on Suzuki-Miyaura coupling follows the order: (sat-NHC)(2)PdCl2 > (sat-NHC)(unsat-NHC)PdCl2 > (unsat-NHC)(2)PdCl2.

  DOI：

  10.1021/ic9025188
• 作为产物：
  描述：

  (CO)5W[-CN(CH2)2NH-] 在 sodium hydride 作用下， 以 not given 为溶剂， 生成 pentacarbonyl(1,3-dibenzylimidazolidin-2-ylidene)tungsten
  参考文献：
  名称：

  N-Heterocyclic Carbene Transfer from Gold(I) to Palladium(II)

  摘要：

  N-Heterocyclic carbene gold(I) complexes [(L)AuCl] [L = 1,3-diethyl-4,5-dihydroimidazol-2-ylidene (3a); 1,3-dibenzyl-4,5-dihydroimidazol-2-ulidene (3c); 1,3-dipicolyl-4,5-dihydroimidazol-2-ylidene (3d); 1,2-diethylimidazol-2-ylidene (5a); and 1-methylthiomethyl-3-mesitylimidazol-2-ylidene (10)] react with [(PhCN)(2)PdCl2] to give the corresponding palladium complexes, and the reactions are promoted by the addition of triphenylphosphine, This Study demonstrates that the carbene moiety can be transferred from Au(I) to Pd(II) for the first time.

  DOI：

  10.1021/om900776j

文献信息

• Synthesis, characterization and catalytic activity of saturated and unsaturated N-heterocyclic carbene iridium(<scp>i</scp>) complexes
  作者：Yung-Hung Chang、Ching-Feng Fu、Yi-Hong Liu、Shei-Ming Peng、Jwu-Ting Chen、Shiuh-Tzung Liu

  DOI：10.1039/b814234c

  日期：——

  saturated and unsaturated N-benzyl substituted heterocyclic carbene (NHC) iridum(I) complexes were synthesized. The unsaturated carbene complex [(un-NHC-Bn)Ir(CO)2Cl] in the cis form was prepared via the carbene transfer from the corresponding silver complex to [Ir(COD)2Cl]2 followed by ligand substitution with CO, whereas the saturated complex was obtained via the transfer from (sat-NHC-Bn)W(CO)5. The treatment

  饱和和不饱和的N-苄基取代的杂环卡宾（NHC）铱（I）配合物被合成。不饱和卡宾顺式制备[[un-NHC-Bn）Ir（CO）2 Cl]配合物，方法是卡宾从相应的银转移络合物的[Ir（COD）2 CL] 2，接着配体用CO取代，而饱和配合物是通过（sat-NHC-Bn）W（CO）5的转移获得的。的治疗膦类（NHC）Ir（CO）2 Cl配合物制得的产物具有膦 配体 反式的碳烯部分通过取代。X射线结构测定表明，在（un-NHC-Bn）Ir（CO）（PR 3）Cl和（un-NHC-Bn）Ir（CO）（PR 3）Cl中，Ir–C （卡宾）的距离基本相同。铱配合物[（NHC）Ir（CO）（PR 3）Cl]和Vaska's配合物的光谱和晶体结构数据分析在两种配合物中都显示出相似的对应数据，这表明所研究的NHC配体 和 膦类与Ir（I）金属中心具有相似的键合。在这项工作中研究的所有铱络合物都说明了它们对三价铬的催化活性。N-烷基化
• Metal Ion Mediated Transfer and Cleavage of Diaminocarbene Ligands
  作者：Rong-Zhi Ku、Jen-Chung Huang、Jian-Yang Cho、Fu-Mei Kiang、K. Rajender Reddy、Yi-Chun Chen、Kuo-Jeng Lee、Jung-Hua Lee、Gene-Hsiang Lee、Shie-Ming Peng、Shiuh-Tzung Liu

  DOI：10.1021/om981023d

  日期：1999.5.1

  allyl, benzyl, 4-pentenyl] with (PhCN)2PdCl2, (PhCN)2PtCl2, [(CO)2RhCl]2, (Me2S)AuCl, [(CH3CN)4Cu]BF4, and AgBF4 provide the corresponding diaminocarbene complexes via carbene ligand transfer. The resulting Pd(II), Pt(II), Rh(I), and Au(I) carbene complexes are stable and were isolated. The Cu(I) and Ag(I) complexes readily undergo acid-induced MC cleavage to yield the imidazolidin-2-ylidinium salts. The

  在温和条件下，（CO）5 M C [N（R）CH 2 ] 2 [M = W，Mo，Cr; R ＝ Et，烯丙基，苄基，4-戊烯基]与（PhCN）2 PdCl 2，（PhCN）2 PtCl 2，[（（CO）2 RhCl] 2，（Me 2 S）AuCl，[（CH 3 CN）4 Cu] BF 4和AgBF 4通过卡宾配体转移提供相应的二氨基卡宾配合物。所得的Pd（II），Pt（II），Rh（I）和Au（I）卡宾配合物稳定且已分离。Cu（I）和Ag（I）配合物容易发生酸诱导的MC裂解，得到咪唑烷基-2-基亚胺盐。研究了两个膦供体的卡宾转移反应：（CO）m（L）W C [N（R）CH 2 ] 2 R = Et，苄基; L = PPh 3，m = 4；L = dppe，m = 3}。（CO）5 W C [N（CH 2 C 6 H 5）CH 2 ] 2（1c），顺式-（CO）4（PPh 3）W C [N（CH