(E)-N,N-dibenzyl-3-(4-methoxyphenyl)prop-2-enamide

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂酸及其衍生物
• 英文名称: (E)-N,N-dibenzyl-3-(4-methoxyphenyl)prop-2-enamide
• 英文别名: (E)-N,N-dibenzyl-3-(4-methoxyphenyl)acrylamide；(E)-4-methoxycinnamic acid dibenzylamide；(2E)-N,N-dibenzyl-3-(4-methoxyphenyl)prop-2-enamide
• 化学式: C₂₄H₂₃NO₂
• 分子量: 357.452
• InChiKey: VOMVRKKXSHTKBS-SAPNQHFASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.8
• 重原子数：
  27
• 可旋转键数：
  7
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  29.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  N,N-二苄基-乙酰胺 在 正丁基锂 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 2.5h， 生成 (E)-N,N-dibenzyl-3-(4-methoxyphenyl)prop-2-enamide
  参考文献：
  名称：

  Z-Selective Synthesis of α,β-Unsaturated Amides with Triphenylsilylacetamides

  摘要：

  With the purpose of developing a method of preparing Z-alpha,beta-unsaturated amides, the Peterson reaction of the (triphenylsilyl)acetamide Ph(3)SiGH(2)COX (1, X = NBn2; 3, X = NMe2) with various aldehydes was examined. The reaction of aromatic aldehydes gave selectivities up to > 97:3. It was found that the selectivity was a function of the electronic nature of the aromatic ring and higher Z selectivity was attained with electron-rich aldehydes. With aliphatic aldehydes selectivities up to 92:8 were achieved, and unlike with analogous phosphorus reagents, less sterically hindered aldehydes gave higher Z selectivity. Also, 3, which has a smaller amide group than 1, tended to give rise to higher selectivity. A comparison with the reaction of trimethylsilyl analogues revealed the significance of the phenyl substituents on the silyl group.

  DOI：

  10.1021/jo0161936

文献信息

• A Catalytic Asymmetric Synthesis of Chiral Glycidic Acid Derivatives through Chiral Dioxirane-Mediated Catalytic Asymmetric Epoxidation of Cinnamic Acid Derivatives
  作者：Ritsuo Imashiro、Masahiko Seki

  DOI：10.1021/jo049893u

  日期：2004.6.1

  A novel and practical asymmetric synthesis of chiral glycidic acid derivatives involving methyl (2R,3S)-3-(4-methoxyphenyl)glycidate ((2R,3S)-2a), a key intermediate for diltiazem hydrochloride (1), was developed. Treatment of methyl (E)-4-methoxycinnamate ((E)-3a) with chiral dioxirane, generated in situ from a catalytic amount (5 mol %) of an 11-membered C2-symmetric binaphthyl ketone (R)-7a, provided

  一种新颖实用的不对称合成手性缩水甘油酸衍生物，涉及（2 R，3 S）-3-（4-甲氧基苯基）缩水甘油酸甲酯（（2 R，3 S）-2a），这是盐酸地尔硫卓的关键中间体（1） ， 发展了。甲基的处理（ë）-4-甲氧基肉桂酸酯（（ë - ）3a中的11元的）与手性双环氧乙烷，从催化量原位产生（5摩尔％）c ^ 2 -对称联萘酮（[R ）-图7a，提供（2 R，3 S）-2a产率为92％，ee为80％。通过使用相同的方法，将其他肉桂酸酯和酰胺环氧化，得到相应的手性缩水甘油酸衍生物，产率高达95％，ee为92％。观察到（E）-肉桂酸酯不对称环氧化的对映选择性比（E）-二苯乙烯衍生物更高的对映选择性，并被认为归因于肉桂酸酯中的酯基团的氧原子与内酯的氧原子之间的偶极-偶极排斥。联萘基二环氧乙烷中的部分。
• Amide α,β-Dehydrogenation Using Allyl-Palladium Catalysis and a Hindered Monodentate Anilide
  作者：Yifeng Chen、Aneta Turlik、Timothy R. Newhouse

  DOI：10.1021/jacs.5b12924

  日期：2016.2.3

  A practical and direct method for the alpha,beta-dehydrogenation of amides is reported using allyl-palladium catalysis. Critical to the success of this process was the synthesis and application of a novel lithium N-cyclohexyl anilide (LiCyan). The reaction conditions tolerate a wide variety of substrates, including those with acidic heteroatom nucleophiles.
• <i>Z</i>-Selective Synthesis of α,β-Unsaturated Amides with Triphenylsilylacetamides
  作者：Satoshi Kojima、Hiroki Inai、Tsugihiko Hidaka、Tomohide Fukuzaki、Katsuo Ohkata

  DOI：10.1021/jo0161936

  日期：2002.6.1

  With the purpose of developing a method of preparing Z-alpha,beta-unsaturated amides, the Peterson reaction of the (triphenylsilyl)acetamide Ph(3)SiGH(2)COX (1, X = NBn2; 3, X = NMe2) with various aldehydes was examined. The reaction of aromatic aldehydes gave selectivities up to > 97:3. It was found that the selectivity was a function of the electronic nature of the aromatic ring and higher Z selectivity was attained with electron-rich aldehydes. With aliphatic aldehydes selectivities up to 92:8 were achieved, and unlike with analogous phosphorus reagents, less sterically hindered aldehydes gave higher Z selectivity. Also, 3, which has a smaller amide group than 1, tended to give rise to higher selectivity. A comparison with the reaction of trimethylsilyl analogues revealed the significance of the phenyl substituents on the silyl group.