[Me2Si(NCMe3)(OCMe3)]2Y(η(2)-(N,N')-N=C(Me)-2-NC5H4) | 199462-49-2

• 分子结构分类: 有机化合物 - 有机氮化合物
• 英文名称: [Me2Si(NCMe3)(OCMe3)]2Y(η(2)-(N,N')-N=C(Me)-2-NC5H4)
• CAS: 199462-49-2
• 化学式: C₂₇H₅₅N₄O₂Si₂Y
• 分子量: 612.836
• InChiKey: SOLFABGRFDBSIV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  [Me2Si(NCMe3)(OCMe3)]2Y(CH(SiMe3)2) 以 氘代苯 为溶剂， 生成 [Me2Si(NCMe3)(OCMe3)]2Y(η(2)-(N,N')-N=C(Me)-2-NC5H4) 、 [Me2Si(NCMe3)(OCMe3)]2Y(η(2)-(N,N')-NH-C(=CH2)-2-NC5H4)
  参考文献：
  名称：

  Synthesis and Reactivity of Bis(alkoxysilylamido)yttrium η²-Pyridyl and η²-α-Picolyl Compounds

  摘要：

  The synthesis and reactivity of bis(alkoxysilylamido)yttrium pyridyl and alpha-picolyl complexes [Me2Si(NCMe3)(OCMe3)](2) YR (R=eta(2)-(C,N)-2-NC5H4(1); R=eta(2)(C,N)-CH2-2-NC5H4 (2); R=eta(2)-(C,N)-C(H)Me-2-NC5H4 (3); R=eta(2)-(C,N)-C(H)Me-2-NC5H3-6-Me (4)) is reported 1-4 have been prepared by C-H activation of pyridine and the corresponding methyl (ethyl) and dimethyl-substituted pyridines from [Me2Si(NCMe3)(OCMe3)](2)YCH(SiMe3)(2) and by salt metathesis with the appropriate lithium salts from [Me2Si(NCMe3)(OCMe3)](2) YCl . THF. The molecular structure of 2 shows that the picolyl group is bonded to yttrium in an eta(3)-aza-allylic fashion. With dihydrogen, stepwise hydrogenation of the pyridyl fragment of 1 has been observed, finally yielding the 2,3-dihydropyridyl complex [Me2Si(NCMe3)(OCMe3)](2)YNC5H8(7). Compound 1 inserts ethene to form the alpha-methylpicolyl derivative 4. Polymerization of ethene was not observed. The pyridyl compound 1 reacts with PhC drop CH to yield the corresponding acetylide pyridine complex [Me2Si(NCMe3)(OCMe3)](2) YC drop CPh . Py (8). The complexed pyridine can be substituted by THF to give [Me2Si(NCMe3)(OCMe3)](2) YC drop CPh . THF (9), which easily loses THF and forms the base-free acetylide [Me2Si(NCMe3)(OCMe3)](2) YC drop CPh (10). Compounds 1 and 2 readily insert nitriles yielding imido-pyridine complexes. The imido-pyridine complexes that contain alpha-hydrogen readily undergo a 1,3-H shift affording the corresponding enamido-pyridine compounds. With CO, the pyridyl compound 1 gives a dipyridylketone complex {[Me2Si(NCMe3)(OCMe3)](2) Y}{mu,eta(2),eta(2)-(N,N',O)-OC(2-NC5H4)(2)} (15).

  DOI：

  10.1021/om970540d