PhSiH(HNtBu)2 | 1414859-94-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: PhSiH(HNtBu)2
• 英文别名: 2-methyl-N,N-bis(phenylsilyl)propan-2-amine
• CAS: 1414859-94-1
• 化学式: C₁₆H₂₃NSi₂
• 分子量: 285.536
• InChiKey: NSFTZEDPVFOOLQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.91
• 重原子数：
  19
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  3.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  苯硅烷 、 叔丁胺 在 C₃₆H₇₈CaN₄Si₄ 作用下， 以 氘代苯 为溶剂， 反应 4.0h， 以99%的产率得到PhSiH(HNtBu)2
  参考文献：
  名称：

  二烷基钙碳加合物：硅烷与胺的合成，结构和催化交叉脱氢偶联

  摘要：

  研究了11种中性配体，以促进钙催化的苯基硅烷与二异丙胺之间的交叉脱氢偶联反应。其中，N杂环卡宾（NHC）配体I i Pr 2 Me 2（1,3-二异丙基-4,5-二甲基咪唑-2-亚基）具有优异的活性和选择性。第一中性NHC支持烷基钙络合物{（I我镨2我2）2的Ca [CH（森达3）2 ] 2 }（4）随后合成和表征通过NMR光谱法和X射线晶体学。复杂4在温和的条件下，在笨重的胺和硅烷之间的催化交叉脱氢偶联反应中显示出高活性和出色的化学选择性。还可以通过将Ca [CH（SiMe 3）2 ] 2与手性NHC配体结合来获得不对称形式，该配体可提供26％ee的旋光性立体硅硅氮烷。

  DOI：

  10.1002/ejic.201900168

文献信息

• Organomagnesium amide catalyzed cross-dehydrocoupling of organosilanes with amines
  作者：Ashim Baishya、Thota Peddarao、Sharanappa Nembenna

  DOI：10.1039/c7dt00806f

  日期：——

  6-trimethylphenyl)imidazol-2-ylidene), Ar = 2,6-Me2C6H3 (Xyl) (1) and 2,4,6-Me3C6H2 (Mes) (2) is reported. Both compounds 1 and 2 were confirmed by multinuclear (1H, 13C and 29Si) magnetic resonance spectroscopy, elemental analysis and single crystal X-ray structural analysis. Furthermore, the organomagnesium amide pre-catalyzed cross-dehydrogenative coupling of organosilanes with amines has been investigated

  新型杂配的有机镁（II）酰胺配合物的合成[IMesMg（Ar）N（SiMe 3）2 }]；（IMes = 1,3-双（2,4,6-三甲基苯基）咪唑-2-亚烷基），Ar = 2,6-Me 2 C 6 H 3（Xyl）（1）和2,4,6-Me据报道3 C 6 H 2（Mes）（2）。化合物1和2均通过多核（1 H，13 C和29Si）磁共振波谱，元素分析和单晶X射线结构分析。此外，已经研究了有机硅烷与胺的有机镁酰胺预催化的交叉脱氢偶联。
• Hetero-dehydrocoupling of silanes and amines by heavier alkaline earth catalysis
  作者：Michael S. Hill、David J. Liptrot、Dugald J. MacDougall、Mary F. Mahon、Thomas P. Robinson

  DOI：10.1039/c3sc51797g

  日期：——

  The homoleptic alkaline earth hexamethyldisilazides, [MN(SiMe3)2}2]2 (1: M = Mg; 2: M = Ca; 3: M = Sr), have been demonstrated as active pre-catalysts for the cross-dehydrocoupling of Si–H and N–H bonds under mild (25–60 °C) conditions. The reactions are applicable to the coupling of a wide variety of amine and silane substrates and are proposed to occur via a sequence of discrete Si–H/M–N and N–H/M–H metathesis steps. Whereas reactions of dialkyl group 2 species with 2,6-di-iso-propylaniline and phenylsilane delivered a series of well-defined compounds consistent with this rationale, kinetic analysis of the cross-coupling of diethylamine with diphenylsilane provided evidence for a more complex and subtly variable mechanistic landscape. Although reactions performed with all three pre-catalysts presented a number of common features, in every case the calcium species, 2, was found to provide notably superior catalytic activity, an order of magnitude higher than both 1 and 3 and in excess of many previously described benchmark transition metal- or f-element-mediated processes. Variations in overall reaction order, mode of pre-catalyst activation and the nature of the rate determining process are postulated to arise as a consequence of the marked change in M2+ radius and resultant charge density as group 2 is descended.

  均配位碱土金属六甲基二硅氨基化合物 [MN(SiMe3)2}2]2 (1: M = Mg; 2: M = Ca; 3: M = Sr) 已被证明是在温和（25–60 °C）条件下进行 Si–H 和 N–H 键交叉脱氢耦合的活性前催化剂。这些反应适用于各种胺和硅烷底物的耦合，推测通过一系列离散的 Si–H/M–N 和 N–H/M–H 置换步骤进行。尽管与 2,6-二异丙基苯胺和苯基硅烷反应的二烷基物种 2 给予了一系列与此推断一致的定义良好的化合物，但在二乙胺与二苯硅烷交叉耦合的动力学分析提供了更为复杂且微妙变化的反应机制证据。虽然使用三种前催化剂进行的反应表现出一些共同特征，但在每种情况下，钙物种 2 显示出明显优越的催化活性，显著高于 1 和 3，并且超出了许多先前描述的基准过渡金属或 f 元素介导的过程。整体反应级数、前催化剂活化方式及速率决定过程的性质变化被推测为由于 M2+ 半径的显著变化及随族下降而导致的电荷密度变化。
• [(NHC)Yb{N(SiMe₃)₂}₂]-Catalyzed Cross-Dehydrogenative Coupling of Silanes with Amines
  作者：Weilong Xie、Hongfan Hu、Chunming Cui

  DOI：10.1002/anie.201205317

  日期：2012.10.29

  cross‐dehydrogenative coupling of silanes with a range of primary and secondary amines to yield silylamines in high yields (82–100 %) under mild reaction conditions. The catalytic activity and selectivity of the rare‐earth‐metal silylamides are modulated by altering the steric bulk of the NHC.

  热门新闻：[（NHC）Yb N（SiMe 3）2 } 2 ]加合物（NHC = N-杂环卡宾）是有效的催化剂，用于硅烷与一系列伯胺和仲胺的催化交叉脱氢偶联，从而制得在温和的反应条件下，收率很高（82–100％）。稀土金属甲硅烷基酰胺的催化活性和选择性是通过改变NHC的空间体积来调节的。
• Homoleptic Divalent Dialkyl Lanthanide-Catalyzed Cross-Dehydrocoupling of Silanes and Amines
  作者：Aradhana Pindwal、Arkady Ellern、Aaron D. Sadow

  DOI：10.1021/acs.organomet.6b00138

  日期：2016.6.13

  The rare-earth bis(alkyl) compound SmC(SiHMe2)(3)}(2)THF2 (1b) is prepared by the reaction of samarium(II) iodide and 2 equiv of KC(SiHMe2)(3). This synthesis is similar to that of previously reported YbC(SiHMe2)(3)}2THF(2) (la), and compounds la,b are isostructural. Reactions of lb and 1 or 2 equiv of B(C6F5)(3) afford SmC(SiHMe2)(3)HB(C6F5)(3)THF2 (2b) or SmHB(C6F5)(3)}2THF(2) (3b), respectively, and 1,3-disilacyclobutane Me2Si-C(SiHMe2)(2)}(2) as a byproduct. Bands from 2300 to 2400 cm(-1) assigned to vBH in the IR spectra and highly paramagnetically shifted signals in the 1113 NMR spectra of 2b and 3b provided evidence for Sm-coordinated HB(C6F5)(3). Compounds la,b react with the bulky N-heterocyclic carbene (NHC) 1,3-di-tert-butylimidazol-2-ylidene (ImtBu) to displace both THF ligands and give three-coordinate monoadducts LnC(SiHMe2)(3)}(2)]mtBu (Ln = Yb (4a), Sm (4b)). Complexes 4a,b catalyze cross-dehydrocoupling of organosilanes with primary and secondary amines at room temperature to give silazanes and 112, whereas la,b are not effective catalysts under these conditions. Second-order plots of In[Et2NH]/[Ph2SiH2]} vs time for 4a-catalyzed dehydrocoupling are linear and indicate first-order dependences on silane and amine concentrations. However, changes in the experimental rate law with increased silane concentration or decreased amine concentration reveal inhibition by silane. In addition, excess ImtBu or THF inhibit the reaction rate. These data, along with the structures of 4a,b, suggest that the bulky carbene favors low coordination numbers, which is important for accessing the catalytically active species.
• A Dialkyl Calcium Carbene Adduct: Synthesis, Structure, and Catalytic Cross‐Dehydrocoupling of Silanes with Amines
  作者：Nan Li、Bing‐Tao Guan

  DOI：10.1002/ejic.201900168

  日期：2019.4.30

  calcium‐catalyzed cross‐dehydrocoupling reaction between phenylsilane and diisopropylamine. Among them, N‐heterocyclic carbene (NHC) ligand IiPr2Me2 (1,3‐diisopropyl‐4,5‐dimethylimidazol‐2‐ylidene) displayed superior activity and selectivity. The first neutral NHC‐supported alkyl calcium complex (IiPr2Me2)2Ca[CH(SiMe3)2]2} (4) was subsequently synthesized and characterized by NMR spectroscopy and X‐ray crystallography

  研究了11种中性配体，以促进钙催化的苯基硅烷与二异丙胺之间的交叉脱氢偶联反应。其中，N杂环卡宾（NHC）配体I i Pr 2 Me 2（1,3-二异丙基-4,5-二甲基咪唑-2-亚基）具有优异的活性和选择性。第一中性NHC支持烷基钙络合物（I我镨2我2）2的Ca [CH（森达3）2 ] 2 }（4）随后合成和表征通过NMR光谱法和X射线晶体学。复杂4在温和的条件下，在笨重的胺和硅烷之间的催化交叉脱氢偶联反应中显示出高活性和出色的化学选择性。还可以通过将Ca [CH（SiMe 3）2 ] 2与手性NHC配体结合来获得不对称形式，该配体可提供26％ee的旋光性立体硅硅氮烷。