Home

Citation: CAI Chao-Jun, HU Bing-Cheng, Lu Chun-Xu. Synthesis of 2-Ethoxycarbonyl-3-bromo-4-methyl-5-formyl-pyrrole[J]. Chinese Journal of Applied Chemistry, ;2006, 23(7): 798-802. shu

Synthesis of 2-Ethoxycarbonyl-3-bromo-4-methyl-5-formyl-pyrrole

1.
School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094

Corresponding author: HU Bing-Cheng,
Received Date: 12 August 2005
Available Online: 16 November 2005

2-Ethoxycarbonyl-4,5-dimethyl-pyrrole(7) was prepared from ethylacetoacetate,ethyl formate and methyl ethyl ketone via oximination,Claisen condensation,and reductive condensation.The bromization of compound 7 gave 2-ethoxycarbonyl-3-bromo-4,5-dimethyl-pyrrole(8),which could be transferred to 2-ethoxycarbonyl-3-brome-4-methyl-5-formyl-pyrrole(9) by the formolation.In the synthesis reaction of compound 7,its yield was maximum when pH,the mole ratio of zinc to compound 1 and reaction temperature were set as 3.8,2.8:1 and 90~95℃, respectively.The effects of solvent on the bromization reaction and oxidant on the formolation reaction of the target product were studied.The results show that the optimum solvent for the bromization reaction and the optimum oxidant for the formolation reaction of the target product were carbon tetrachloride and ceric ammonium nitrate,and their yields were 86.7% and 89.3% respectively.The structures of the compounds were characterized by elemental analysis,accurate mass,¹H NMR,IR and GC-MS.
- ethoxycarbonyldimethyl-pyrrole,
- ethoxycarbonylbromodimethyl-pyrrole,
- ethoxycarbonylbromemethylformyl-pyrrole
1. [1]
  Xiaoyang Li , Xiaowei Huang , Yimeng Zhang , Huan Liu , Shao Jin , Junpeng Zhuang . Comprehensive Chemical Experiments on the Synthesis of 1,3-Dibromo-5,5-Dimethylhydantoin and Its Application as a Brominating Reagent. University Chemistry, 2025, 40(7): 286-293. doi: 10.12461/PKU.DXHX202408035
2. [2]
  Guowen Xing , Guangjian Liu , Le Chang . Five Types of Reactions of Carbonyl Oxonium Intermediates in University Organic Chemistry Teaching. University Chemistry, 2025, 40(4): 282-290. doi: 10.12461/PKU.DXHX202407058
3. [3]
  Jianding LI , Junyang FENG , Huimin REN , Gang LI . Proton conductive properties of a Hf(Ⅳ)-based metal-organic framework built by 2,5-dibromophenyl-4,6-dicarboxylic acid. Chinese Journal of Inorganic Chemistry, 2025, 41(6): 1094-1100. doi: 10.11862/CJIC.20240464
4. [4]
  Tingting Yu , Si Chen , Lianglong Sun , Tongtong Shi , Kai Sun , Xin Wang . Comprehensive Experimental Design for the Photochemical Synthesis, Analysis, and Characterization of Difluoropyrroles. University Chemistry, 2024, 39(11): 196-203. doi: 10.3866/PKU.DXHX202401022
5. [5]
  Zhuoming Liang , Ming Chen , Zhiwen Zheng , Kai Chen . Multidimensional Studies on Ketone-Enol Tautomerism of 1,3-Diketones By ¹H NMR. University Chemistry, 2024, 39(7): 361-367. doi: 10.3866/PKU.DXHX202311029
6. [6]
  Lifang HE , Wenjie TANG , Yaoze LUO , Mingsheng LIANG , Jianxin TANG , Yuxuan WU , Fuxing ZHANG , Xiaoming ZHU . Synthesis, structure, and anticancer activity of two dialkyltin complexes constructed based on 2, 2′-bipyridin-6, 6′-dicarboxylic acid. Chinese Journal of Inorganic Chemistry, 2025, 41(8): 1601-1609. doi: 10.11862/CJIC.20250012
7. [7]
  Yanglin Jiang , Mingqing Chen , Min Liang , Yige Yao , Yan Zhang , Peng Wang , Jianping Zhang . Experimental and Theoretical Investigations of Solvent Polarity Effect on ESIPT Mechanism in 4′-N,N-diethylamino-3-hydroxybenzoflavone. Acta Physico-Chimica Sinica, 2025, 41(2): 2309027-0. doi: 10.3866/PKU.WHXB202309027
8. [8]
  Zhaoyu Wen , Na Han , Yanguang Li . Recent Progress towards the Production of H₂O₂ by Electrochemical Two-Electron Oxygen Reduction Reaction. Acta Physico-Chimica Sinica, 2024, 40(2): 2304001-0. doi: 10.3866/PKU.WHXB202304001
9. [9]
  Hailang JIA , Pengcheng JI , Hongcheng LI . Preparation and performance of nickel doped ruthenium dioxide electrocatalyst for oxygen evolution. Chinese Journal of Inorganic Chemistry, 2025, 41(8): 1632-1640. doi: 10.11862/CJIC.20240398
10. [10]
  Aiyi Xin , Jiawei Li , Xinyang Ran , Chuanjiang Fu , Zhiguo Wang . Collaborative Science and Education Based Experimental Design in Organic Chemistry: A Case Study of the Nucleophilic Substitution Reaction of 2-Hydroxymethyl-4,6-Di-Tert-Butylphenol. University Chemistry, 2025, 40(5): 366-375. doi: 10.12461/PKU.DXHX202407031
11. [11]
  Huirong BAO , Jun YANG , Xiaomiao FENG . Preparation and electrochemical properties of NiCoP/polypyrrole/carbon cloth by electrodeposition. Chinese Journal of Inorganic Chemistry, 2025, 41(6): 1083-1093. doi: 10.11862/CJIC.20250008
12. [12]
  Xiaoling LUO , Pintian ZOU , Xiaoyan WANG , Zheng LIU , Xiangfei KONG , Qun TANG , Sheng WANG . Synthesis, crystal structures, and properties of lanthanide metal-organic frameworks based on 2, 5-dibromoterephthalic acid ligand. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1143-1150. doi: 10.11862/CJIC.20230271
13. [13]
  Fa Wang , Yu Chen , Hui Chao . Ruthenium(II) Complexes as Photoactivated Chemo-Prodrugs for Hypoxic Tumor Therapy. University Chemistry, 2025, 40(7): 200-212. doi: 10.12461/PKU.DXHX202410024
14. [14]
  Yinwu Su , Xuanwen Zheng , Jianghui Du , Boda Li , Tao Wang , Zhiyan Huang . Green Synthesis of 1,3-Dibromoacetone Using Halogen Exchange Method: Recommending a Basic Organic Synthesis Teaching Experiment. University Chemistry, 2024, 39(5): 307-314. doi: 10.3866/PKU.DXHX202311092
15. [15]
  Ling Liu , Haibin Wang , Genrong Qiang . Curriculum Ideological and Political Design for the Comprehensive Preparation Experiment of Ethyl Benzoate Synthesized from Benzyl Alcohol. University Chemistry, 2024, 39(2): 94-98. doi: 10.3866/PKU.DXHX202304080
16. [16]
  Shuying Zhu , Shuting Wu , Ou Zheng . Improvement and Expansion of the Experiment for Determining the Rate Constant of the Saponification Reaction of Ethyl Acetate. University Chemistry, 2024, 39(4): 107-113. doi: 10.3866/PKU.DXHX202310117
17. [17]
  Ruitong Zhang , Zhiqiang Zeng , Xiaoguang Zhang . Improvement of Ethyl Acetate Saponification Reaction and Iodine Clock Reaction Experiments. University Chemistry, 2024, 39(8): 197-203. doi: 10.3866/PKU.DXHX202312004
18. [18]
  Liuyun Chen , Wenju Wang , Tairong Lu , Xuan Luo , Xinling Xie , Kelin Huang , Shanli Qin , Tongming Su , Zuzeng Qin , Hongbing Ji . Soft template-induced deep pore structure of Cu/Al₂O₃ for promoting plasma-catalyzed CO₂ hydrogenation to DME. Acta Physico-Chimica Sinica, 2025, 41(6): 100054-0. doi: 10.1016/j.actphy.2025.100054
19. [19]
  Yinjie Xu , Suiqin Li , Lihao Liu , Jiahui He , Kai Li , Mengxin Wang , Shuying Zhao , Chun Li , Zhengbin Zhang , Xing Zhong , Jianguo Wang . Enhanced Electrocatalytic Oxidation of Sterols using the Synergistic Effect of NiFe-MOF and Aminoxyl Radicals. Acta Physico-Chimica Sinica, 2024, 40(3): 2305012-0. doi: 10.3866/PKU.WHXB202305012
20. [20]
  Jiaojiao Yu , Bo Sun , Na Li , Cong Wen , Wei Li . Improvement of Classical Organic Experiment Based on the “Reverse-Step Optimization Method”: Taking Synthesis of Ethyl Acetate as an Example. University Chemistry, 2025, 40(3): 333-341. doi: 10.12461/PKU.DXHX202405177

Get Citation

PDF

XML

Metrics

PDF Downloads(1)
Abstract views(468)
HTML views(61)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return