1-methyl-5-(2,4,6-trimethoxyphenyl)pyrrolidin-2-one | 70687-39-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯烷类
• 英文名称: 1-methyl-5-(2,4,6-trimethoxyphenyl)pyrrolidin-2-one
• CAS: 70687-39-7
• 化学式: C₁₄H₁₉NO₄
• 分子量: 265.309
• InChiKey: UBGCWEXTZAXJIN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  19
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  48
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  N-甲基吡咯烷酮 在 盐酸 、 叔丁基过氧化氢 、 四丁基碘化铵 作用下， 以 甲醇 、 癸烷 、 水 为溶剂， 生成 1-methyl-5-(2,4,6-trimethoxyphenyl)pyrrolidin-2-one
  参考文献：
  名称：

  HN-唑与α-C（sp 3）-H酰胺经C–H活化的无金属交叉脱氢偶联及其机理和应用研究

  摘要：

  在氧化反应条件下，已开发出各种N-唑环与各种含α-C（sp 3）-H的酰胺之间的无金属一步偶联反应。在纯净的反应条件下，在叔丁基过氧化氢（TBHP）存在下，市售的碘化四丁基碘化铵（TBAI）有效地催化了偶联反应。各种唑类型，例如1 H-苯并三唑，1 H -1,2,3-三唑，1 H -1,2,4-三唑，1 H-四唑，1 H-吡唑和1 H-苯并咪唑，和含α-C（sp 3）-H的酰胺，例如N，N-二甲基乙酰胺，N，Ñ二甲基苯甲酰胺，Ñ甲基乙酰胺，Ñ，Ñ -diethylacetamide，Ñ -甲基吡咯烷和吡咯烷-2-酮，被成功地用于偶联。为了研究不同中间体的参与，还进行了一系列设计和控制的实验。根据证据，还提出了一个合理的机制。这些新颖，简单，快速，有吸引力和直接的转变为构造新型高度功能化的N开辟了道路。-唑类通过直接的共价N–H键转换为N–C键而形成。该方法允许使用经典的合成方法合成需要多个步骤的复杂分子。此外，含α-C（sp

  DOI：

  10.1021/acs.joc.6b02448

文献信息

• K₂S₂O₈-catalyzed highly regioselective amidoalkylation of diverse N-heteroaromatics in water under visible light irradiation
  作者：Jiadi Zhou、Quanlei Ren、Ning Xu、Chaodong Wang、Shengjie Song、Zhi Chen、Jianjun Li

  DOI：10.1039/d1gc02107a

  日期：——

  N-heteroaromatics and γ-lactams/amides was developed. Quinoxalin-2(1H)-one, quinoline, isoquinoline, phthalazine, and benzothiazole reacted with γ-lactams/amides to give the corresponding C(sp2)–H amidoalkylation products in moderate to good yields with high regioselectivity. This visible-light-induced photocatalyst-free reaction was conducted in H2O at ambient temperature, which comply with the principles

  开发了 AK 2 S 2 O 8催化的多功能 C(sp 2 )–C(sp 3 ) 键与 N-杂芳烃和 γ-内酰胺/酰胺的形成。Quinoxalin-2(1 H )-one、喹啉、异喹啉、酞嗪和苯并噻唑与 γ-内酰胺/酰胺反应，以中等至良好的收率和高区域选择性得到相应的 C(sp 2 )-H 酰胺烷基化产物。这种可见光诱导的无光催化剂反应是在环境温度下在 H 2 O 中进行的，符合“绿色化学”的原则。新的 K 2 S 2 O 8 通过对照实验研究了催化机理。
• Photocatalyst-Free, Visible-Light-Mediated C(sp³)–H Arylation of Amides via a Solvent-Caged EDA Complex
  作者：Jaspreet Kaur、Ahmed Shahin、Joshua P. Barham

  DOI：10.1021/acs.orglett.1c00132

  日期：2021.3.19

  A photocatalyst-free and mild visible light photochemical procedure for C(sp3)–H arylation of amides is described. The reaction proceeds via an electron donor–acceptor (EDA) complex between an electron-rich arene substrate and electron-poor persulfate oxidant. C(sp3)–H arylation of the amide occurs selectively with the most electron-rich arene of the substrate. Mechanistic studies corroborate the reaction

  描述了酰胺的C（sp 3）–H芳基化反应的无光催化剂和温和可见光光化学程序。反应通过富电子芳烃底物与贫电子过硫酸盐氧化剂之间的电子给体-受体（EDA）配合物进行。酰胺的C（sp 3）–H芳基化选择性地发生在底物最富电子的芳烃上。机理研究证实了该反应是在溶剂笼中进行的，溶剂笼中的组分紧密相邻。
• Friedel–Crafts Amidoalkylation via Thermolysis and Oxidative Photocatalysis
  作者：Chunhui Dai、Francesco Meschini、Jagan M. R. Narayanam、Corey R. J. Stephenson

  DOI：10.1021/jo300162c

  日期：2012.5.4

  Friedel Crafts amidoalkylation was achieved by oxidation of dialkylamides using persulfate (S2O82-) in the presence of the visible light catalyst, Ru(bpy)(3)Cl-2, at room temperature, via a reactive N-acyliminium intermediate. Alternatively, mild heating of the dialkylamides and persulfate afforded a metal and Lewis acid-free Friedel-Crafts amidoalkylation. Alcohols and electron-rich arenes served as effective nucleophiles, forming new C-O or C-C bonds. In general, photocatalysis provided higher yields and better selectivities.
• Iron-Catalyzed Oxidative Coupling of Alkylamides with Arenes through Oxidation of Alkylamides Followed by Friedel−Crafts Alkylation
  作者：Eiji Shirakawa、Nanase Uchiyama、Tamio Hayashi

  DOI：10.1021/jo102217m

  日期：2011.1.7

  FeCL(3) in combination with t-BuOOt-Bu as an oxidant was found to be an efficient catalyst for oxidation of alkylamides to alpha-(tert-butoxy)alkylamides. FeCl(2) and CuCl showed, respectively, almost the same and slightly lower activities compared with FeCl(3) in the tert-butoxylation of N-phenylpyrrolidone (1a), whereas no tert-butoxylated product was obtained by use of Fe(OTf)(3), RuCl(3), or Zr(OTf)(4). FeCl(3) was found to be effective also as a catalyst for the Friedel-Crafts alkylation with thus obtained alpha-(tert-butoxy)alkylamides. The Friedel-Crafts alkylation proceeded smoothly also in the presence of a catalytic amount of Fe(OTf)(3), RuCl(3), or Zr(OTf)(4). In contrast, FeCl(2) and CuCl, which showed certain activity toward the tert-butoxylation, failed to promote the Friedel Crafts alkylation. Among the transition metal complexes thus far examined, only FeCl(3) showed high catalytic activities for both the oxidation and the Friedel-Crafts alkylation. The bifunctionality of FeCl(3) was utilized for the oxidative coupling of alkylamides with arenes through a tandem reaction consisting of oxidation of alkylamides to alpha-(tert-butoxy)alkylamides and the following Friedel-Crafts alkylation. The FeCl(3)-catalyzed oxidative coupling is applicable to a wide variety of alkylamides and arenes, though a combination of FeCl(3) with Fe(OTf)(3) was found to be effective for the reaction of arenes with low nucleophilicity. A Fe(II)-Fe(III) catalytic cycle is concerned with the tert-butoxylation, whereas a Fe(III) complex as a Lewis acid catalyzes the Friedel-Crafts alkylation.