(E)-2-methyl-2-pentenoyl chloride | 55764-37-9

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 酰卤
• 英文名称: (E)-2-methyl-2-pentenoyl chloride
• 英文别名: 2-methylpent-2E-enoyl chloride；(E)-2-methylpent-2-enoyl chloride；2-Methylpent-2-enoyl chloride
• CAS: 55764-37-9
• 化学式: C₆H₉ClO
• 分子量: 132.59
• InChiKey: JTQXJDWMNNIVRS-SNAWJCMRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  8
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (E)-2-methyl-2-pentenoyl chloride 在 氨 作用下， 以 水 为溶剂， 反应 2.0h， 以9.53 g的产率得到2-Methyl-penten-2-carbonsaeureamid
  参考文献：
  名称：

  Novel (S)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acids: Peroxisome proliferator-activated receptor γ selective agonists with protein-tyrosine phosphatase 1B inhibition

  摘要：

  A novel series of 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid derivatives were synthesized and (S)-2-[(2E,4E)- hexadienoyl]-7-(2-(5-methyl-2-[( 1E)-5-methylhexen-1-yl]oxazol-4-yl]ethoxy)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (14i) was identified as a potent human peroxisome proliferator-activated receptor gamma (PPAR gamma) selective agonist (EC(50) = 0.03 mu M) and human protein-tyrosine phosphatase 1B (PTP-1B) inhibitor (IC(50) = 1.18 mu M). C(max) after oral administration of 14i at 10 mg/kg was 2.2 mu g/ml (4.5 mu M) in male SD rats. Repeated administration of 14i and rosiglitazone for 14 days dose-dependently decreased plasma glucose levels, ED(50) = 4.3 and 23 mg/kg/day, respectively, in male KK-A(y) mice. In female SD rats, repeated administration of 14i at 12.5-100 mg/kg/day for 28 days had no effect on the hematocrit value (Ht) and red blood cell count (RBC), while rosiglitazone significantly decreased them from 25 mg/kg/day. In conclusion, 14i showed about a fivefold stronger hypoglycemic effect and fourfold or more weaker hemodilution effect than rosiglitazone, indicating that 14i is 20-fold or more safer than rosiglitazone. Compound 14i is a promising candidate for an efficacious and safe anti-diabetic drug targeting PPAR gamma and PTP-1B. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2011.11.035
• 作为产物：
  描述：

  2-甲基-2-戊烯醛 在 sodium chlorite 、 氯化亚砜 作用下， 以 氯仿 为溶剂， 反应 1.5h， 生成 (E)-2-methyl-2-pentenoyl chloride
  参考文献：
  名称：

  dominicalure 1 和 2 的立体选择性合成：来自雄性小粒螟Rhyzopertha dominica (F.) 的聚集信息素的成分。

  摘要：

  Dominicalure 1 (9a) 和 dominicalure 2 (9b) 是通过 α,β-不饱和酸 4a 和 4b 与 (S)-(+)-2-戊醇 (8) 酯化合成的。关键步骤是 3-penten-2-one (5) 的不对称还原得到手性中间体 6，在二酰亚胺还原、DNB 衍生化、重结晶和水解后，得到 63% ee 的 8。酸 4a 和 4b 以简单有效的三步合成法制备，总收率分别为 54% 和 62%，呈立体异构纯形式。

  DOI：

  10.1007/bf02033577

文献信息

• [EN] PROCESS FOR SYNTHESIS OF INDENES<br/>[FR] PROCÉDÉ DE SYNTHÈSE D'INDÈNES
  申请人：SCG CHEMICALS CO LTD

  公开号：WO2015189073A1

  公开（公告）日：2015-12-17

  The present invention relates to a new process for the synthesis of 2,3,4,5,6,7-substiuted indenes, which are useful precursors for the formation of certain ansa-metailocene catalysts.

  本发明涉及一种合成2,3,4,5,6,7-取代吲哚的新工艺，这些化合物是某些环状二茂铁催化剂的前体。
• Enantioselective Palladium(0)-Catalyzed Nazarov-Type Cyclization
  作者：Kei Kitamura、Naoyuki Shimada、Craig Stewart、Abdurrahman C. Atesin、Tülay A. Ateşin、Marcus A. Tius

  DOI：10.1002/anie.201500881

  日期：2015.5.18

  A Pd0‐catalyzed asymmetric Nazarov‐type cyclization is described. The optimized ligand for the reaction incorporates a weakly coordinating pyridine ring into a TADDOL‐derived phosphoramidite (TADDOL=α,α,α,α‐tetraaryl‐1,3‐dioxolane‐4,5‐dimethanol). The reaction leads to the formation of cyclopentenones as single diastereoisomers that incorporate two contiguous asymmetric centers, one tertiary and one

  描述了Pd 0催化的不对称Nazarov型环化反应。该反应的优化配体将弱配位吡啶环掺入TADDOL衍生的亚磷酰胺（TADDOL =α，α，α，α-四芳基-1,3-二氧戊环-4,5-二甲醇）。该反应导致形成单一非对映异构体的环戊烯酮，以高收率和光学纯度结合了两个连续的不对称中心，一个叔碳原子中心和一个全碳原子的四元立体中心。值得注意的是，该反应不需要底物应被芳基取代基活化。
• Stereospecific Electrophilic Fluorocyclization of α,β-Unsaturated Amides with Selectfluor
  作者：Haiyang Fei、Zheyuan Xu、Hongmiao Wu、Lin Zhu、Hitesh B. Jalani、Guigen Li、Yao Fu、Hongjian Lu

  DOI：10.1021/acs.orglett.0c00620

  日期：2020.4.3

  An efficient fluorocyclization of α,β-unsaturated amides through a formal halocyclization process is developed. The reaction proceeds under transition-metal-free conditions and leads to the formation of fluorinated oxazolidine-2,4-diones with excellent regio- and diastereoselectivity. The evaluation of the reaction mechanism based on preliminary experiments and density functional theory calculations

  通过正式的卤代环化过程，开发了一种高效的α，β-不饱和酰胺的氟环化方法。该反应在无过渡金属的条件下进行，并导致形成具有优异的区域和非对映选择性的氟化恶唑烷-2,4-二酮。基于初步实验和密度泛函理论计算对反应机理的评估表明，发生了协同的顺-氧代氟化反应，随后发生了反-氧代取代反应。该反应打开了立体特异性氟官能化领域的新窗口。
• Nickel-Catalyzed Direct Alkylation of C–H Bonds in Benzamides and Acrylamides with Functionalized Alkyl Halides via Bidentate-Chelation Assistance
  作者：Yoshinori Aihara、Naoto Chatani

  DOI：10.1021/ja401344e

  日期：2013.4.10

  The alkylation of the ortho C-H bonds in benzamides and acrylamides containing an 8-aminoquinoline moiety as a bidentate directing group with unactivated alkyl halides using nickel complexes as catalysts is described. The reaction shows high functional group compatibility. In reactions of meta-substituted aromatic amides, the reaction proceeds in a highly selective manner at the less hindered C-H bond

  描述了使用镍配合物作为催化剂，使用未活化的卤代烷对苯甲酰胺和含有 8-氨基喹啉部分作为双齿导向基团的苯甲酰胺和丙烯酰胺中的邻位 CH 键进行烷基化。该反应显示出高度的官能团相容性。在间位取代芳香酰胺的反应中，反应在受阻较小的 CH 键上以高度选择性的方式进行。
• Nucleophilic halo-Michael addition under Lewis-base activation
  作者：Víctor Laina-Martín、Ignacio Pérez、Jose A. Fernández-Salas、José Alemán

  DOI：10.1039/c9cc07068k

  日期：——

  A simple and general conjugate nucleophilic halogenation is presented. The THTO/halosilane combination has shown the ability to act as a nucleophilic halide source in the conjugate addition to a variety of Michael acceptors. In addition, a straightforward diastereoselective halogen installation using α,β-unsaturated acyloxazolidinones as platforms has been developed.

  提出了一种简单且通用的共轭亲核卤代。THTO /卤硅烷组合物已显示出在多种迈克尔受体的共轭物加成物中充当亲核卤化物源的能力。另外，已经开发了使用α，β-不饱和酰基恶唑烷二酮作为平台的简单的非对映选择性卤素装置。

表征谱图