methyl 2-phenyl-1H-pyrrole-3-carboxylate | 52179-69-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯
• 英文名称: methyl 2-phenyl-1H-pyrrole-3-carboxylate
• CAS: 52179-69-8
• 化学式: C₁₂H₁₁NO₂
• 分子量: 201.225
• InChiKey: CBBLMVXBVOJETA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  42.1
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  methyl 2-phenyl-1H-pyrrole-3-carboxylate 在 氢氧化钾 作用下， 生成 2-苯基-吡咯
  参考文献：
  名称：

  A Novel [3+2] Cycloaddition Approach to Nitrogen Heterocycles via Phosphine-Catalyzed Reactions of 2,3-Butadienoates or 2-Butynoates and Dimethyl Acetylenedicarboxylate with Imines:  A Convenient Synthesis of Pentabromopseudilin

  摘要：

  The reactivity of a new three carbon synthon, generated in situ from the reaction of 2,3-butadienoates or 2-butynoates with an appropriate phosphine as the catalyst, toward the electron deficient imines is described. Triphenylphosphine-catalyzed reaction of-methyl a,3-butadienoate with N-sulfonylimines gave the single [3+2] cycloadduct in excellent yield; tributylphosphine-catalyzed reaction of methyl 2,3-butadienoate or 2-butynoate with N-tosylimines afforded the corresponding [3+2] cycloadduct as the major product along with a small amount of the three components adduct. Aliphatic N-tosylimines gave moderate yield for this reaction. In addition, a new phosphine-catalyzed cyclization reaction of dimethyl acetylenedicarboxylate with N-tosylimines is also described. A:reaction mechanism is proposed. Further elaborations of the cycloaddition products and the synthesis of pentabromopseudilin using this method are exemplified.

  DOI：

  10.1021/jo9723063
• 作为产物：
  描述：

  N-toluenesulfonyl-3-methoxycarbonyl-2-phenyl-3-pyrrolidine 在 sodium t-butanolate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 2.0h， 生成 methyl 2-phenyl-1H-pyrrole-3-carboxylate
  参考文献：
  名称：

  2-苯基-1 H-吡咯-3-羧酰胺作为开发具有认知增强活性的5-HT 6受体反向激动剂的新型支架。

  摘要：

  鉴于其拮抗剂在多种记忆障碍范例中的积极作用，六羟色胺6型受体（5-HT 6 R）作为治疗认知缺陷的有希望的靶点已引起特别关注。在此，我们报道了1 H-吡咯并[3,2- c ]喹啉骨架的降解，以提供2-苯基-1 H-吡咯-3-甲酰胺，它没有典型的吲哚样骨架，并且保留了对5-HT 6 R.这种修饰已在5-HT改变了化合物的活性6 R-操作信令从中性拮抗作用途径反向激动。研究确定了化合物27，可作为5-HT 6的反向激动剂在Gs和Cdk5信号通路中的R。化合物27显示出高选择性和代谢稳定性，并且是脑渗透剂。最后，在新的物体识别测试中，有27种逆转了东pol碱所致的记忆力下降，并在大鼠的注意转移中表现出认知功能。根据这些发现，可以考虑将27种化合物作为一种新的认知增强剂进行进一步评估，而2-苯基-1 H-吡咯-3-羧酰胺可以用作设计5-HT 6 R反向激动剂的模板。

  DOI：

  10.1021/acschemneuro.1c00061

文献信息

• 2-Trimethylsilylethanesulfonyl (SES) versus Tosyl (Ts) Protecting Group in the Preparation of Nitrogen-Containing Five-Membered Rings. A Novel Route for the Synthesis of Substituted Pyrrolines and Pyrrolidines
  作者：Valérie Declerck、Hassan Allouchi、Jean Martinez、Frédéric Lamaty

  DOI：10.1021/jo062239p

  日期：2007.2.1

  aza-Baylis−Hillman/alkylation/RCM route. While deprotection of Ts-protected pyrrolines gave only pyrroles, deprotection of the same SES-protected compounds gave either pyrroles or free amine pyrrolines depending on the deprotection conditions. The SES-protected pyrrolines were hydrogenated to yield pyrrolidines with an excellent diastereoselectivity. Free amine pyrrolidines were obtained by HF-mediated

  在通过氮杂-Baylis-Hillman /烷基化/ RCM路线获得的含氮五元环的制备中，将2-三甲基甲硅烷基乙磺酰基（或SES）保护基与甲苯磺酰基（Ts）进行了比较。Ts保护的吡咯啉的脱保护仅产生吡咯，而相同的SES保护的化合物的脱保护则根据脱保护条件而产生吡咯或游离胺吡咯。将SES保护的吡咯啉加氢生成具有出色的非对映选择性的吡咯烷。通过HF介导的SES基团的脱保护得到游离的胺吡咯烷。
• Application of the ring-closing metathesis to the formation of 2-aryl-1H-pyrrole-3-carboxylates as building blocks for biologically active compounds
  作者：Katarzyna Grychowska、Bartłomiej Kubica、Marcin Drop、Evelina Colacino、Xavier Bantreil、Maciej Pawłowski、Jean Martinez、Gilles Subra、Paweł Zajdel、Frédéric Lamaty

  DOI：10.1016/j.tet.2016.09.059

  日期：2016.11

  kinetics on the RCM. After an aromatization step, this methodology allowed for an efficient generation of variously substituted and unprecedented 2-aryl-1H-pyrrole-3-carboxylates in good yields and cost-effectiveness. The resulting molecules might serve as key building blocks for the generation of CNS-oriented compound libraries.

  闭环复分解（RCM）是制备环状有机化合物的有力工具。然而，该方法的主要限制之一是难以制备大量靶分子。在本文中，我们描述了基于相应β-氨基酯的闭环复分解过程作为关键步骤的关于2芳基1 H-吡咯-3-羧酸的克级合成的综合研究。这项研究包括在RCM上评估溶剂和催化剂以及反应动力学。进行芳构化步骤后，此方法可有效生成各种取代的和前所未有的2-芳基-1 H-吡咯-3-羧酸酯具有良好的产率和成本效益。所得的分子可以作为生成面向CNS的化合物库的关键构件。
• IBX-Promoted Oxidative Cyclization of <i>N</i>-Hydroxyalkyl Enamines: A Metal-Free Approach toward 2,3-Disubstituted Pyrroles and Pyridines
  作者：Peng Gao、Huai-Juan Chen、Zi-Jing Bai、Mi-Na Zhao、Desuo Yang、Juan Wang、Ning Wang、Lele Du、Zheng-Hui Guan

  DOI：10.1021/acs.joc.0c00625

  日期：2020.6.19

  An iodoxybenzoic acid-mediated selected oxidative cyclization of N-hydroxyalkyl enamines was developed. Through this strategy, a variety of 2,3-disubstituted pyrroles and pyridines were produced in good selectivity involving oxidation of alcohol, followed by condensation of aldehyde and α-C of enamines. Furthermore, this metal-free method has several advantages, including the use of environmentally

  开发了碘氧基苯甲酸介导的N-羟烷基烯胺的选择氧化环化。通过这种策略，以良好的选择性生产了各种2,3-二取代的吡咯和吡啶，涉及醇的氧化，然后醛与烯胺的α-C缩合。此外，这种无金属方法具有多个优点，包括使用环保试剂，广泛的底物范围，温和的反应条件和高效率。
• Stereoselectivity of Cydoaddition of<i>N</i>-(Cyanomethyl)- and<i>N</i>-(α-Cyanobenzyl)imines with Olefinic Dipolarophiles. Synthetic Equivalents of Nitrile Ylide 1,3-Dipoles
  作者：Otohiko Tsuge、Kazunori Ueno、Shuji Kanemasa、Kiyotaka Yorozu

  DOI：10.1246/bcsj.59.1809

  日期：1986.6

  N-(Cyanomethyl)- and N-(α-cyanobenzyl)imines derived from a variety of aldehydes and ketones can tautomerize into N-protonated azomethine ylides which undergo cycloadditions with olefinic dipolarophiles. These cycloadditions are often accompanied by the elimination of HCN, mostly in a stereospecific manner, showing these imines to be synthetic equivalents of nonstabilized nitrile ylides. Stereoselectivity

  衍生自各种醛和酮的 N-(氰基甲基)-和 N-(α-氰基苄基)亚胺可以互变异构为 N-质子化的偶氮甲碱叶立德，后者与烯属偶极体发生环加成反应。这些环加成通常伴随着 HCN 的消除，主要是以立体有择的方式，表明这些亚胺是不稳定的腈叶立德的合成等价物。讨论了环加成的立体选择性。
• Sequential <i>aza</i>-Baylis−Hillman/Ring Closing Metathesis/Aromatization as a Novel Route for the Synthesis of Substituted Pyrroles
  作者：Valérie Declerck、Patrice Ribière、Jean Martinez、Frédéric Lamaty

  DOI：10.1021/jo048519r

  日期：2004.11.1

  2-substituted-3-methoxycarbonyl pyrroles has been developed. Diverse SES protected α-methylene β-aminoesters were obtained by a 3-component aza-Baylis−Hillman reaction. Diversity arose from the aryl aldehydes which can be used in this reaction. N-Alkylation with allyl bromide under mild conditions provided the corresponding dienes. These substituted dienes were cyclized by ring closing metathesis at room

  已经开发出一种新的途径来制备各种2-取代的3-甲氧基羰基吡咯。通过3-组分氮杂-Baylis-Hillman反应获得了多种SES保护的α-亚甲基β-氨基酯。可以用于该反应的芳基醛引起多样性。在温和条件下用烯丙基溴进行N-烷基化可提供相应的二烯。这些取代的二烯通过在室温下或在用格鲁布斯（Grubbs）II型催化剂进行微波活化下的闭环复分解反应而环化，得到SES保护的吡咯啉中间体。最终的吡咯是通过碱促进的脱氢脱亚磺酰化/芳香化获得的。探索了每个反应的范围。