N-(pent-4-en-1-yl)acetamide | 54385-21-6

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: N-(pent-4-en-1-yl)acetamide
• 英文别名: N-(pent-4-enyl)-acetamide；N-5-pent-4-enylacetamide；N-(4-Pentenyl)acetamide；N-4-pentenylacetamide；N-(4-Penten-1-yl)-acetamid；N-pent-4-enylacetamide
• CAS: 54385-21-6
• 化学式: C₇H₁₃NO
• 分子量: 127.186
• InChiKey: GRNFHSGFIGDFSE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  9
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  29.1
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  N-(pent-4-en-1-yl)acetamide 在 三乙胺 作用下， 以 乙醚 为溶剂， 反应 13.0h， 生成 N-acetyl-N-pent-4-enylcarbamoyl chloride
  参考文献：
  名称：

  Multiple Reaction Channels of (N-Acyl-N-alkylcarbamoyl)oxyl Radicals from N-Acyl PTOC Carbamates

  摘要：

  N-Acyl-N-alkyl-N'-hydroxypyridine-2-thione carbamates (N-acyl PTOC carbamates) 1 are prepared in good to excellent yield by reactions of N-acylcarbamoyl chlorides with N-hydroxypyridine-2-thione sodium salt. Methods for production of the requisite carbamoyl chlorides by reaction of a secondary amide with trimethylsilyl triflate followed by treatment with phosgene were optimized. Precursors 1 react in radical chain reactions to give the title radicals (2) that can further react by several pathways. Decarboxylations of radicals 2 give amidyl radicals, and this method is excellent for production of acetamidyl radicals and in particular the N-methylacetarnidyl radical which is difficult to prepare by other routes. 5-Exo cyclizations of amidyl radicals produced by decarboxylation of 2 give, ultimately, lactams and N-acylpyrrolidines. 1,5-Hydrogen transfer reactions of 2 to give alpha-amide radicals compete with decarboxylation; cyclization of an alpha-amide radical thus formed also is reported. The Lewis acid MgBr2 can reduce the 1,5-hydrogen atom transfer reaction apparently by a chelation effect on the precursor that leads to production of radical 2 in a conformation unfavorable for hydrogen atom transfer. By appropriate experimental design, radicals 2 often can be directed toward one desired reaction, and several relative rate constants for reactions of 2 necessary for such design were determined in this work.

  DOI：

  10.1021/jo00089a023
• 作为产物：
  描述：

  4-pentenamide 在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 、 乙醚 为溶剂， 反应 5.0h， 生成 N-(pent-4-en-1-yl)acetamide
  参考文献：
  名称：

  的立体选择性合成Ñ通过γ-的Pd-催化的反应（ -保护的吡咯烷ñ -酰基）烯烃和γ-（Ñ -Boc -氨基）链烯与芳基溴化物

  摘要：

  描述了通过Pd催化的γ-（N-酰基氨基）烯烃和γ-（N -Boc-氨基）烯烃与芳基溴的立体反应合成的N-酰基和N - Boc保护的吡咯烷。这些反应在一次操作中实现两个键的形成，并且通常以高水平的非对映选择性进行。与先前描述的γ-（N-芳基氨基）烯烃反应相反，这些转化反应在富电子和缺电子的芳基溴化物以及乙烯基溴化物底物下均以高收率和高区域选择性进行。

  DOI：

  10.1016/j.tet.2005.03.110

文献信息

• Mild Conditions for Pd-Catalyzed Carboamination of <i>N</i>-Protected Hex-4-enylamines and 1-, 3-, and 4-Substituted Pent-4-enylamines. Scope, Limitations, and Mechanism of Pyrrolidine Formation
  作者：Myra Beaudoin Bertrand、Joshua D. Neukom、John P. Wolfe

  DOI：10.1021/jo801631v

  日期：2008.11.21

  with aryl bromides leads to greatly increased tolerance of functional groups and alkene substitution. Substrates derived from (E)- or (Z)-hex-4-enylamines are stereospecifically converted to 2,1'-disubstituted pyrrolidine products that result from suprafacial addition of the nitrogen atom and the aryl group across the alkene. Transformations of 4-substituted pent-4-enylamine derivatives proceed in high

  在N保护的γ-氨基烯烃与芳基溴化物的Pd催化碳氨化反应中使用弱碱Cs2CO3会导致官能团和烯烃取代的耐受性大大提高。衍生自（E）-或（Z）-己-4-烯基胺的底物被立体定向​​转化为2,1'-二取代的吡咯烷产物，该产物是通过在烯烃上表面氮原子和芳基的表面加成而产生的。以高收率进行4-取代的戊-4-烯胺衍生物的转化，得到2,2-二取代的产物，并且以高收率产生顺式-2,5-或反式-2,3-二取代的吡咯烷，并具有优异的非对映选择性。 -在C1或C3处带有取代基的被保护的戊-4-烯基胺。反应可耐受各种官能团，包括酯，硝基，和烯醇化的酮 详细说明了这些转换的范围和局限性，以及解释了所观察到的产物立体化学的模型。另外，还讨论了氘标记实验，该实验表明这些反应通过中间钯（芳基）（酰胺）配合物的顺氨基钯催化进行，而与烯烃的取代程度或反应条件无关。
• Palladium-Catalyzed Aerobic Intramolecular Aminoacetoxylation of Alkenes Enabled by Catalytic Nitrate
  作者：Jiaming Li、Robert H. Grubbs、Brian M. Stoltz

  DOI：10.1021/acs.orglett.6b02722

  日期：2016.11.4

  A mild aerobic intramolecular aminoacetoxylation method for the synthesis of pyrrolidine and indoline derivatives was achieved using molecular oxygen as the oxidant. A catalytic NOx species acts as an electron transfer mediator to access a high-valent palladium intermediate as the presumed active oxidant.

  以分子氧为氧化剂，实现了一种温和需氧分子内氨基乙酰氧基化合成吡咯烷和二氢吲哚衍生物的方法。催化NO x物质充当电子转移介体，以获取高价钯中间体作为假定的活性氧化剂。
• PCET-Enabled Olefin Hydroamidation Reactions with <i>N</i>-Alkyl Amides
  作者：Suong T. Nguyen、Qilei Zhu、Robert R. Knowles

  DOI：10.1021/acscatal.9b00966

  日期：2019.5.3

  Olefin aminations are important synthetic technologies for the construction of aliphatic C-N bonds. Here we report a catalytic protocol for olefin hydroamidation that proceeds through transient amidyl radical intermediates that are formed via proton-coupled electron transfer (PCET) activation of the strong N-H bonds in N-alkyl amides by an excited-state iridium photocatalyst and a dialkyl phosphate

  烯烃胺化是构建脂族CN键的重要合成技术。在这里，我们报告了烯烃加氢酰胺化的催化方案，该方案通过瞬态a基自由基中间体进行，该中间体通过质子偶联电子转移（PCET）活化态铱光催化剂和磷酸二烷基酯对N-烷基酰胺中强NH键的活化作用而形成根据。该方法具有广泛的底物范围，较高的官能团耐受性和适用于级联多环化反应的能力。还证明了该PCET方案在实现未活化烯烃的分子间抗马氏化学加氢酰胺化反应方面的可行性。
• Deprotection of benzyl-derived groups via photochemically mesolytic cleavage of C–N and C–O bonds
  作者：Kangjiang Liang、Xipan Li、Delian Wei、Cuihua Jin、Chuanwang Liu、Chengfeng Xia

  DOI：10.1016/j.chempr.2022.11.001

  日期：2023.2

  easily removed via visible light irradiation under mild conditions. We found that an excited phenolate-type photocatalyst efficiently transfers an electron to the benzene ring of benzyl-derived protecting groups to generate a phenyl radical anion. The benzyl C–N or C–O bond is then mesolytically cleaved by releasing a benzyl radical. This method enables efficient deprotection of the benzyl group on amides

  苄基及其衍生物是有机合成中最常用和最广泛使用的保护基团，通常通过传统的过渡金属催化氢解或 Birch 还原来去除。氢解受到官能团相容性以及氢的易燃性和易爆性的限制，而 Birch 还原则受到易燃碱和苛刻条件的限制。在这里，我们报告在温和条件下通过可见光照射很容易去除苄基衍生的保护基团。我们发现激发的酚盐型光催化剂有效地将电子转移到苄基衍生保护基团的苯环上以产生苯基阴离子。苄基 C-N 或 C-O 键然后通过释放苄基自由基被分解裂解。该方法能够有效地脱保护酰胺、芳基胺、醚、酯和氨基甲酸酯上的苄基。具体而言，该方法在碳水化合物、肽、药物和具有多种功能的天然产物中显示出出色的化学和区域选择性。
• Self-cooling foam-containing composite materials
  申请人：BASF SE

  公开号：US11248151B2

  公开（公告）日：2022-02-15

  Provided herein is a composite material that includes at least one thermoresponsive polymer and at least one organic foam material. Further provided herein is a method for producing the composite material and also to the use of the composite material for cooling and for regulating temperature.

  本发明提供了一种复合材料，其包括至少一种热响应聚合物和至少一种有机泡沫材料。本发明还提供了一种制备该复合材料的方法，以及该复合材料在冷却和温度调节中的应用。