1-(1,1-dimethylethyl)-1,1-dimethyl-N-(2-phenyl-1,4-pentadien-1-ylidene)silanamine | 960595-42-0

• 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: 1-(1,1-dimethylethyl)-1,1-dimethyl-N-(2-phenyl-1,4-pentadien-1-ylidene)silanamine
• CAS: 960595-42-0
• 化学式: C₁₇H₂₅NSi
• 分子量: 271.478
• InChiKey: CEJICUDDQGZNMX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.32
• 重原子数：
  19
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.41
• 拓扑面积：
  12.4
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  1-(1,1-dimethylethyl)-1,1-dimethyl-N-(2-phenyl-1,4-pentadien-1-ylidene)silanamine 在 (4R,5R)-2-chloro-3,4-dimethyl-2-[(2-methylpropan-2-yl)oxy]-5-phenyl-1,3,2-oxazasilolidine 、 碘 作用下， 以 乙醚 、 二氯甲烷 、 苯 为溶剂， 反应 3.0h， 生成
  参考文献：
  名称：

  A New Synthesis of Pyrrolidines by Way of an Enantioselective Mannich/Diastereoselective Hydroamination Reaction Sequence

  摘要：

  A new two-step synthesis of highly substituted pyrrolidines has been developed. Chiral silane Lewis acid promoted enantioselective Mannich reactions of silyl ketene imines with acylhydrazones may be used to access bishomoallylic benzoic hydrazides that In turn may be cyclized to pyrrolidines by way of the thermal hydroamination reaction reported recently by Beauchemin. Importantly, excellent diastereoselectivity may be realized in the hydroamination reactions.

  DOI：

  10.1021/ol201566u
• 作为产物：
  描述：

  苯乙腈 在 正丁基锂 、 二异丙胺 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 hexanes 为溶剂， 反应 18.34h， 生成 1-(1,1-dimethylethyl)-1,1-dimethyl-N-(2-phenyl-1,4-pentadien-1-ylidene)silanamine
  参考文献：
  名称：

  A New Synthesis of Pyrrolidines by Way of an Enantioselective Mannich/Diastereoselective Hydroamination Reaction Sequence

  摘要：

  A new two-step synthesis of highly substituted pyrrolidines has been developed. Chiral silane Lewis acid promoted enantioselective Mannich reactions of silyl ketene imines with acylhydrazones may be used to access bishomoallylic benzoic hydrazides that In turn may be cyclized to pyrrolidines by way of the thermal hydroamination reaction reported recently by Beauchemin. Importantly, excellent diastereoselectivity may be realized in the hydroamination reactions.

  DOI：

  10.1021/ol201566u

文献信息

• Enantioselective Construction of Quaternary Stereogenic Carbon Atoms by the Lewis Base Catalyzed Additions of Silyl Ketene Imines to Aldehydes
  作者：Scott E. Denmark、Tyler W. Wilson、Matthew T. Burk

  DOI：10.1002/chem.201403342

  日期：2014.7.21

  the aldol addition reaction. In the presence of SiCl4 and the catalytic action of a chiral phosphoramide, silyl ketene imines undergo extremely rapid and high yielding addition to a wide variety of aromatic aldehydes with excellent diastereo‐ and enantioselectivity. Of particular note are the high yields and selectivities obtained from electron‐rich, electron‐poor, and hindered aldehydes. Linear aliphatic

  衍生自多种α-支化腈的甲硅烷基烯酮亚胺已被开发为通过醛醇加成反应构建季立体异构中心的高度有用的试剂。在SiCl 4的存在和手性磷酰胺的催化作用下，甲硅烷基烯酮亚胺会以极快的非对映选择性和对映选择性快速，高收率地添加到各种芳香醛中。特别值得注意的是从富电子，贫电子和受阻醛获得的高收率和选择性。直链脂肪族醛确实具有良好的diastereo-和对映选择性的存在下反应Ñ卜4 Ñ +我-，但支链醛的反应性低得多。半经验计算通过开放的过渡态为观察到的非对映和对映选择性提供了合理的条件。
• Enantioselective Construction of Vicinal Tetrasubstituted Stereocenters by the Mannich Reaction of Silyl Ketene Imines with Isatin‐Derived Ketimines
  作者：Jiannan Zhao、Bing Fang、Weiwei Luo、Xiaoyu Hao、Xiaohua Liu、Lili Lin、Xiaoming Feng

  DOI：10.1002/anie.201408730

  日期：2015.1.2

  A highly enantioselective Mannich reaction of silyl ketene imines with isatin‐derived ketimines has been realized by using a chiral N,N′‐dioxide/ZnII catalyst. A variety of β‐amino nitriles containing congested vicinal tetrasubstituted stereocenters were obtained with excellent outcomes (up to 98 % yield, >19:1 d.r. and 99 % ee). Based on the experimental investigations, a possible transition state

  通过使用手性N，N'-二氧化物/ Zn II催化剂，实现了甲硅烷基烯酮亚胺与异麦芽酮酮酮的高度对映选择性曼尼希反应。获得了多种包含拥挤的邻近四取代立体中心的β-氨基腈，具有优异的结果（产率高达98％，dr> 19：1，ee高达99％  ）。根据实验研究，提出了一种可能的过渡态来解释不对称感应的起源。
• Highly Enantioselective Mannich Reactions with α-Aryl Silyl Ketene Acetals and Imines
  作者：Gregory T. Notte、Jenny M. Baxter Vu、James L. Leighton

  DOI：10.1021/ol103096u

  日期：2011.2.18

  Mannich reactions with chiral silicon Lewis acid activated acylhydrazones and α-aryl silyl ketene acetals and α-aryl,α-alkyl silyl ketene imines proceed efficiently and with good to excellent levels of both diastereoselectivity and enantioselectivity. The reactions provide access to α-aryl,β-hydrazido esters and α-aryl,α-alkyl,β-hydrazido nitriles, which are valuable analogs of β-amino acids.

  与手性硅路易斯酸活化的酰基腙和 α-芳基甲硅烷基乙烯酮缩醛和 α-芳基，α-烷基甲硅烷基乙烯酮亚胺的曼尼希反应有效地进行，并具有良好至极好的非对映选择性和对映选择性。该反应提供了获得 α-芳基、β-酰肼基酯和 α-芳基、α-烷基、β-酰肼基腈的途径，它们是 β-氨基酸的有价值的类似物。
• A New Synthesis of Pyrrolidines by Way of an Enantioselective Mannich/Diastereoselective Hydroamination Reaction Sequence
  作者：Jenny M. Baxter Vu、James L. Leighton

  DOI：10.1021/ol201566u

  日期：2011.8.5

  A new two-step synthesis of highly substituted pyrrolidines has been developed. Chiral silane Lewis acid promoted enantioselective Mannich reactions of silyl ketene imines with acylhydrazones may be used to access bishomoallylic benzoic hydrazides that In turn may be cyclized to pyrrolidines by way of the thermal hydroamination reaction reported recently by Beauchemin. Importantly, excellent diastereoselectivity may be realized in the hydroamination reactions.