N-trimethylsilyl-4-trifluoromethylbenzaldimine | 199604-04-1

• 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: N-trimethylsilyl-4-trifluoromethylbenzaldimine
• 英文别名: 4-(Trifluoromethyl)-N-(trimethylsilyl)benzenemethanimine；1-[4-(trifluoromethyl)phenyl]-N-trimethylsilylmethanimine
• CAS: 199604-04-1
• 化学式: C₁₁H₁₄F₃NSi
• 分子量: 245.32
• InChiKey: VQOKWHTXSAAACU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.96
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  12.4
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  N-trimethylsilyl-4-trifluoromethylbenzaldimine 在 Oxone 、 potassium carbonate 作用下， 以 氯仿 为溶剂， 反应 3.0h， 生成 N-methoxycarbonyl-4-trifluoromethylbenzamide
  参考文献：
  名称：

  N-Alkyloxycarbonyl-3-aryloxaziridines: Their Preparation, Structure, and Utilization As Electrophilic Amination Reagents

  摘要：

  AbstractThis paper reports the synthesis of a series of N‐protected oxaziridines (N‐Moc, Boc, Z or Fmoc) and discusses their ability to deliver their N‐alkoxycar‐bonyl fragment to amines, enolates, sulfur, and phosphorus nucleophiles (electrophilic amination). These oxaziridines are prepared by oxidation of the corresponding imines with oxone or anhydrous MCPBA lithium salt as the source of oxygen. They transfer their N‐protected fragment to primary and secondary amines to give protected hydrazines in fair to excellent yield. The nitrogen transfer to free amino acids (in form of their R4N+ salts) is particularly fast, even at low temperature, providing L (or D) N‐protected α‐hydrazino acids. Enolates are C‐aminated to give N‐protected α‐amino ketones, esters, or amides in modest yield, due to a side aldol reaction of the unreacted enolate with the released benzaldehyde. With tertiary amines (Et3N), sulfides (PhSMe), and phosphines (Ph3P), amination and oxidation proceed in a parallel way; the amount of amination product increases when the temperature is lowered (kinetic control). Some of the factors that can orient the oxaziridine reactivity towards amination or oxidation of nucleophiles are considered.

  DOI：

  10.1002/chem.19970031019
• 作为产物：
  描述：

  对三氟甲基苯甲醛 、 sodium hexamethyldisilazane 以 四氢呋喃 为溶剂， 生成 N-trimethylsilyl-4-trifluoromethylbenzaldimine
  参考文献：
  名称：

  [3 + 2] 叔胺 N-氧化物和甲硅烷基亚胺的环加成作为 1,2-二胺的创新路线

  摘要：

  我们开发了一种一锅合成方法，通过正式的 umpolung 工艺，从易于制备且市售的前体中生产 1,2-二胺。我们的方法利用有效的[3 + 2]环加成作为以中等到高产率形成取代的1,2-二胺的关键步骤。这些产生的化合物可以进行后续的转化，证明它们作为更复杂支架的合成构件的实用性。最后，我们使用密度泛函理论模型提出了这种转变的合理机制，证明了实验观察的合理性。

  DOI：

  10.1021/acs.orglett.3c01396

文献信息

• Silyl Imine Electrophiles in Enantioselective Catalysis: A Rosetta Stone for Peptide Homologation, Enabling Diverse <i>N</i>-Protected Aryl Glycines from Aldehydes in Three Steps
  作者：Dawn M. Makley、Jeffrey N. Johnston

  DOI：10.1021/ol501297a

  日期：2014.6.6

  es serve in the Bis(AMidine)-catalyzed addition of bromonitromethane with a high degree of enantioselection. This allows for the production of a range of protected α-bromo nitroalkane donors (including Fmoc) for use in Umpolung Amide Synthesis (UmAS). Hence, peptide homologation with nonnatural aryl glycine amino acids is achieved in three steps from aromatic aldehydes, which are plentiful and inexpensive

  我们报告N -（三甲基甲硅烷基）亚胺在双（脒）催化的溴硝基甲烷加成中发挥作用，具有高度的对映选择性。这允许生产一系列受保护的 α-溴硝基烷烃供体（包括 Fmoc），用于 Umpolung 酰胺合成 (UmAS)。因此，与非天然芳基甘氨酸氨基酸的肽同源性是通过三个步骤从芳香醛中实现的，芳香醛丰富且价格低廉。通过避免α-氨基酸中间体，可以避免同源步骤中的差向异构化。
• Access to Nitriles from Aldehydes Mediated by an Oxoammonium Salt
  作者：Christopher B. Kelly、Kyle M. Lambert、Michael A. Mercadante、John M. Ovian、William F. Bailey、Nicholas E. Leadbeater

  DOI：10.1002/anie.201412256

  日期：2015.3.27

  route to access an array of nitriles from aldehydes mediated by an oxoammonium salt (4‐acetylamino‐2,2,6,6‐tetramethylpiperidine‐1‐oxoammonium tetrafluoroborate) and hexamethyldisilazane (HMDS) as an ammonia surrogate has been developed. The reaction likely involves two distinct chemical transformations: reversible silyl‐imine formation between HMDS and an aldehyde, followed by oxidation mediated by the

  一种可扩展，高产，快速的途径，可通过乙氧基铵盐（4-乙酰氨基-2-2,2,6,6-四甲基哌啶-1-氟肟酸四氟硼酸）和六甲基二硅氮烷（HMDS）介导的醛类中的一系列腈的进入已经被开发出来。该反应可能涉及两个不同的化学转化：HMDS和醛之间可逆的甲硅烷基亚胺形成，然后由氧铵盐介导的氧化和甲硅烷基化反应制得腈。废氧化剂可以容易地回收并用于再生氧铵盐氧化剂。
• Chiral Phosphoric Acid Catalyzed Enantioselective [4 + 2] Cycloaddition Reaction of α-Fluorostyrenes with Imines
  作者：Jun Kikuchi、Haiting Ye、Masahiro Terada

  DOI：10.1021/acs.orglett.0c03360

  日期：2020.11.20

  An enantioselective [4 + 2] cycloaddition reaction of α-fluorostyrenes with N-benzoyl imines was demonstrated using a chiral phosphoric acid catalyst. Cycloaddition products having fluorine functionality were formed in high yields with excellent diastereo- and enantioselectivities. Further manipulation of the enantioenriched cycloaddition product with silyl enol ether in the presence of BiCl3 catalyst

  使用手性磷酸催化剂证明了α-氟苯乙烯与N-苯甲酰基亚胺的对映选择性[4 + 2]环加成反应。具有氟官能团的环加成产物以高收率形成，具有优异的非对映选择性和对映选择性。在BiCl 3催化剂存在下，用甲硅烷基烯醇醚进一步处理对映体富集的环加成产物，得到的取代产物可通过选择性碳-氟键裂解保留二氢-4 H -1,3-恶嗪骨架，而不会损失对映体过量。
• Catalytic Enantioselective One-pot Aminoborylation of Aldehydes: A Strategy for Construction of Nonracemic α-Amino Boronates
  作者：Kai Hong、James P. Morken

  DOI：10.1021/ja402569j

  日期：2013.6.26

  We report a strategy for the conversion of aldehydes to enantiomerically enriched alpha-amino boronates through the intermediacy of in situ-generated silylimines. This transformation is brought about by Pt-catalyzed asymmetric addition of B-2(pin)(2) across the imine double bond. An attractive feature of the intermediate diboration adduct is that it can be acylated directly and provides convenient access to important N-acyl alpha-amino boronic ester derivatives.
• Convenient Access to Primary Amines by Employing the Barbier-Type Reaction of <i>N</i>-(Trimethylsilyl)imines Derived from Aromatic and Aliphatic Aldehydes
  作者：Ferenc Gyenes、Kathryn E. Bergmann、John T. Welch

  DOI：10.1021/jo971061r

  日期：1998.5.1

  A new versatile preparation of primary amines via benzylation of aromatic and aliphatic aldimines is described. Sonochemical and traditional methods for generation of the reactive intermediates are compared and contrasted. Competitive reactions were analyzed via free energy relationships to support the proposed alkylative mechanism.