5-phenyl-pent-2-enoic acid dimethylamide | 485809-13-0

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 5-phenyl-pent-2-enoic acid dimethylamide
• 英文别名: (E)-N,N-dimethyl-5-phenylpent-2-enamide
• CAS: 485809-13-0
• 化学式: C₁₃H₁₇NO
• 分子量: 203.284
• InChiKey: RVSYQBJQESNDBV-YRNVUSSQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  20.3
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  5-phenyl-pent-2-enoic acid dimethylamide 在 叔丁基过氧化氢 叠氮基三甲基硅烷 、 三苯胂氧化物 、 S-1,1'-联-2-萘酚 、 samarium(III) isopropoxide 作用下， 以 四氢呋喃 、 癸烷 为溶剂， 反应 18.0h， 生成 (2R,3R)-3-azido-2-hydroxy-N,N-dimethyl-5-phenylpentanamide
  参考文献：
  名称：

  Dynamic Ligand Exchange of the Lanthanide Complex Leading to Structural and Functional Transformation:  One-Pot Sequential Catalytic Asymmetric Epoxidation-Regioselective Epoxide-Opening Process

  摘要：

  The characteristic property of the lanthanide complex, which easily undergoes a dynamic ligand exchange and alters its structure and function in situ, is described. After the completion of the catalytic asymmetric epoxidation of various a,beta-unsaturated amides 2 in the presence of the Sm-(S)-BINOL-Ph3As=O (1:1:1) complex 1 (2-10 mol %), the addition of Me3SiN3 directly to the reaction mixture led to smooth epoxide-opening at room temperature, affording the corresponding anti-beta-azido-alpha-hydroxyamide 4 in excellent overall yield (up to 99%) with complete regioselectivity and excellent enantiomeric excess (up to >99%). The key to the success of the sequential process was the in situ generation of the highly reactive samarium azide complex through dynamic ligand exchange. In situ IR spectroscopy and other experiments provided strong evidence that the samariurn azide complex was generated. In addition, the relatively high Lewis basicity of the amide moiety had a key role in the high reactivity of both the epoxidation and the epoxide-opening reactions. Examinations of other nucleophiles such as sulfur or carbon nucleophiles as well as transformations of epoxide-opened products are also described.

  DOI：

  10.1021/ja043770+
• 作为产物：
  描述：

  5-phenyl-2-pentenoic acid chloride 、 二甲胺 生成 5-phenyl-pent-2-enoic acid dimethylamide
  参考文献：
  名称：

  α,β-不饱和酰胺的催化不对称环氧化：使用一锅串联催化不对称环氧化-钯催化环氧化物开环工艺高效合成β-芳基α-羟基酰胺

  摘要：

  使用Sm-BINOL-Ph3As=O配合物催化α,β-不饱和酰胺的不对称环氧化反应取得成功。使用 5-10 mol% 的不对称催化剂，可以有效地环氧化各种酰胺，以高达 99% 的产率和超过 99% 的 ee 生成相应的 α,β-环氧酰胺。此外，还开发了一种新型的一锅串联工艺，即一锅串联催化不对称环氧化-钯催化的环氧化物开环工艺。该方法已成功用于β-芳基α-羟基酰胺的有效合成，包括β-芳基乳糖基-亮氨酸甲酯。有趣的是，发现 Pd 催化剂的有益改性是通过第一次环氧化的成分实现的，就化学选择性而言，产生了更适合 Pd 催化的环氧化物开环反应的催化剂。

  DOI：

  10.1021/ja028454e

文献信息

• Diazo Reagents in Copper(I)-Catalyzed Olefination of Aldehydes
  作者：Hélène Lebel、Michaël Davi

  DOI：10.1002/adsc.200800381

  日期：2008.10.6

  The olefination of aldehydes to synthesize unsaturated ketones, esters, amides and phosphonates using diazo reagents and triphenylphosphine in the presence of copper(I) iodide as catalyst, is described. Good to excellent E:Z selectivities as well as yields were obtained for a large variety of aliphatic, aromatic and heteroaromatic aldehydes. The reaction showed also an excellent functional group compatibility

  描述了在碘化铜（I）存在下使用重氮试剂和三苯基膦将醛烯化以合成不饱和酮，酯，酰胺和膦酸酯。对于多种脂族，芳族和杂芳族醛，均获得了良好的E：Z选择性和良好的收率。该反应还显示出优异的官能团相容性，并且在酮，硝基，胺，醚，缩醛，硫醚和卤化物基团的存在下醛被选择性地反应。与先前报道的昂贵的过渡金属络合物相比，使用成本有效的铜盐作为催化剂是有利的。该方法用于scutifoliamide A的全合成，scutifoliamide A是一种具有抗真菌活性的生物活性化合物。
• Highly<i>Z</i>-Selective Synthesis of Disubstituted α,β-Unsaturated Cyanides and Amides Using 10-P-5 Wittig Type Reagents
  作者：Satoshi Kojima、Kazuhiro Kawaguchi、Shiro Matsukawa、Keiichiro Uchida、Kin-ya Akiba

  DOI：10.1246/cl.2002.170

  日期：2002.2

  bearing cyanomethyl, acetamide, and N,N-dimethylacetamide groups were examined for Wittig type reactions. All three reacted to give the corresponding olefins. The reaction of the cyanomethyl reagent with aldehydes gave α,β-unsaturated cyanides with high Z-selectivity in the case of aliphatic aldehydes (Z:E=94:6 to 99:1). On the other hand, the reactions of the two amide reagents with aldehydes yielded

  检查带有氰甲基、乙酰胺和 N,N-二甲基乙酰胺基团的磷烷 (10-P-5) 的 Wittig 型反应。所有三个反应得到相应的烯烃。在脂肪醛的情况下，氰甲基试剂与醛反应得到具有高 Z-选择性的 α,β-不饱和氰化物（Z:E=94:6 至 99:1）。另一方面，两种酰胺试剂与醛的反应产生了 α,β-不饱和酰胺，对芳香族和脂肪族醛都具有高 Z 选择性（Z:E=99:1 至 >99:<1）。
• Catalytic asymmetric epoxidation of α,β-unsaturated carboxylic acid imidazolides and amides by lanthanide–BINOL complexes
  作者：Takashi Ohshima、Tetsuhiro Nemoto、Shin-ya Tosaki、Hiroyuki Kakei、Vijay Gnanadesikan、Masakatsu Shibasaki

  DOI：10.1016/j.tet.2003.06.010

  日期：2003.12

  Highly enantioselective catalytic asymmetric epoxidation of α,β-unsaturated carboxylic acid imidazolides and simple amides was developed. In the presence of 5–10 mol% of lanthanide–BINOL complexes, the reaction proceeded smoothly with high substrate generality. In particular, in the cases of α,β-unsaturated amides, there was nearly perfect enantioselectivity (>99% ee). The corresponding epoxides were

  研究了α，β-不饱和羧酸咪唑化物和简单酰胺的高度对映选择性催化不对称环氧化反应。在5-10 mol％的镧系元素-BINOL配合物的存在下，反应在高底物普遍性下可顺利进行。特别地，在α，β-不饱和酰胺的情况下，几乎具有完美的对映选择性（> 99％ee）。相应的环氧化物已成功转化为多种类型的有用手性化合物，例如α，β-环氧酯，α，β-环氧酰胺，α，β-环氧醛，α，β-环氧β-酮酸酯，α-和β-羟基羰基化合物。进行B3LYP密度泛函研究以预测底物反应性。
• Dearomatization of (Hetero)arenes through Photodriven Interplay between Polysulfide Anions and Formate**
  作者：Eugene Yew Kun Tan、Amirah S. Mat Lani、Wayne Sow、Yuliang Liu、Haoyu Li、Shunsuke Chiba

  DOI：10.1002/anie.202309764

  日期：2023.10.2

  protocol was developed for the dearomatization of substituted naphthalenes, indoles, and related heteroaromatic compounds through a radical-polar crossover mechanism induced by single-electron transfer from photoexcited polysulfide anions in the presence of methanol. The catalytic turnover is maintained by hydrogen-atom transfer between polysulfide radical anions and formate.

  开发了一种光催化方案，通过在甲醇存在下光激发多硫化物阴离子的单电子转移诱导的自由基-极性交叉机制，用于取代萘、吲哚和相关杂芳族化合物的脱芳构化。催化转化通过多硫化物自由基阴离子和甲酸盐之间的氢原子转移来维持。
• <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.