| 1009332-07-3

• CAS: 1009332-07-3
• 化学式: C₃₇H₅₇Br₂LaN₂O₂
• 分子量: 860.585
• InChiKey: DWGYZECHYWHJCF-QAMUVDSHSA-L

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：

  benzyl potassium 、 以 四氢呋喃 为溶剂， 以46%的产率得到
  参考文献：
  名称：

  Strategies for the Synthesis of Lanthanum Dialkyl Complexes with Monoanionic Ancillary Ligands

  摘要：

  The synthesis of lanthanum dialkyl complexes with monoanionic ancillary ligands [L](-) is pursued by three different strategies: (a) in situ peralkylation of LaBr3(THF)(4) with 3 equiv of LiCH2SiMe3 followed by reaction with LH; (b) reaction of isolated La(CH2Ph)(3)(THF)(3) with LH; (c) stepwise salt metathesis on LaBr3(THF)(4). Methods (a) and (b) generally work well for triazacyclononane-amide and amidinate ligands, but are unsuitable for the sterically demanding beta-diketiminate [HC(MeCNAr)(2)]- (Ar = 2,6-iPr(2)C(6)H(3)) due to its high affinity for the Li cation and the sluggish reactivity of the diketimine. Nevertheless, the beta-diketiminate lanthanum dibenzyl complex [HC(MeCNAr)(2)]La(CH2Ph)(2)(THF) could be obtained by first reacting LaBr3(THF)(4) with K[HC(MeCNAr)(2)] to form [HC(MeCNAr)(2)]LaBr2(THF)(2) and subsequent reaction of this dibromide complex with 2 equiv of PhCH2K. When this reaction mixture is warmed, the product decomposes by H-abstraction from one of the diketiminate methyl groups and ligand redistribution, forming the coordination polymer {[mu-eta(2):eta(1)-ArNC(Me)CHC(CH2)NAr](2)La[K(THF)(4)]}(infinity).

  DOI：

  10.1021/om700919h
• 作为产物：
  描述：

  K[HC(C(Me)N(2,6-diisopropylphenyl))₂] 、 LaBr₃(THF)₄ 以 四氢呋喃 为溶剂， 以76%的产率得到
  参考文献：
  名称：

  Strategies for the Synthesis of Lanthanum Dialkyl Complexes with Monoanionic Ancillary Ligands

  摘要：

  The synthesis of lanthanum dialkyl complexes with monoanionic ancillary ligands [L](-) is pursued by three different strategies: (a) in situ peralkylation of LaBr3(THF)(4) with 3 equiv of LiCH2SiMe3 followed by reaction with LH; (b) reaction of isolated La(CH2Ph)(3)(THF)(3) with LH; (c) stepwise salt metathesis on LaBr3(THF)(4). Methods (a) and (b) generally work well for triazacyclononane-amide and amidinate ligands, but are unsuitable for the sterically demanding beta-diketiminate [HC(MeCNAr)(2)]- (Ar = 2,6-iPr(2)C(6)H(3)) due to its high affinity for the Li cation and the sluggish reactivity of the diketimine. Nevertheless, the beta-diketiminate lanthanum dibenzyl complex [HC(MeCNAr)(2)]La(CH2Ph)(2)(THF) could be obtained by first reacting LaBr3(THF)(4) with K[HC(MeCNAr)(2)] to form [HC(MeCNAr)(2)]LaBr2(THF)(2) and subsequent reaction of this dibromide complex with 2 equiv of PhCH2K. When this reaction mixture is warmed, the product decomposes by H-abstraction from one of the diketiminate methyl groups and ligand redistribution, forming the coordination polymer {[mu-eta(2):eta(1)-ArNC(Me)CHC(CH2)NAr](2)La[K(THF)(4)]}(infinity).

  DOI：

  10.1021/om700919h