37009-52-2Relevant articles and documents
2, 5-substituent-1H-imidazole-4-carboxylic ester compound and synthesis and purification method thereof
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Paragraph 0103-0107, (2021/05/08)
The invention provides a 2, 5-substituent-1H-imidazole-4-carboxylic ester compound and a synthesis and purification method thereof, the method uses iodine as an oxidizing agent to promote the oxidative cyclization reaction of an enamine compound, so that the operation of preparing the 2, 5-substituent-1H-imidazole-4-carboxylic ester compound is simpler, the preparation cost is greatly reduced, the relative yield and purity are higher, and the environmental pollution is less. Besides, the 2, 5-substituent-1H-imidazole-4-carboxylic ester compound provided by the invention has been widely applied in the fields of medicine, ligand chemistry and material science due to the special heterocyclic skeleton, and is a valuable synthetic intermediate and a functional organic molecule.
Synthesis of polyfunctional imidazoles from vinyl azides and amidine along with NHBoc as a leaving group
Tang, Pai,Ke, Di,Shao,Chen, Wenteng,Yu, Yongping
, p. 4419 - 4424 (2019/07/09)
An efficient method for the synthesis of polyfunctional imidazoles from vinyl azides and amidine has been developed. Starting from vinyl azide and amidine, this transformation proceeds without any additives and the obtained imidazoles can be decorated with ester functional group that is a promising site for further modification.
A Domino Azidation/C-H Amination Approach toward Trifluoromethyl Substituted Imidazoles
Ma, Haichao,Zhang, Xiaoyan,Chen, Liangliang,Yu, Wei
, p. 11841 - 11847 (2017/11/24)
N-Alkyl enamines can be transformed into 2,4,5-trisubsituted imidazoles by reacting with (diacetoxyiodo)benzene and TMSN3 under the catalysis of a copper salt such as Cu(OAc)2. Tetrabutyl ammonium iodide was also capable of promoting the reaction. The transformation from N-alkyl enamines into 2,4,5-trisubsituted imidazoles took place in a domino azidation/intramolecular C(sp3)-H amination pattern. The present reaction provides a new efficient method for the preparation of 4-(trifluoromethyl) imidazoles.