Regioselective synthesis of N1-substituted-4-nitropyrazole-5-carboxylates via the cyclocondensation of ethyl 4-(dimethylamino)-3-nitro-2-oxobut-3-enoate with substituted hydrazines?
Organic & Biomolecular Chemistry Pub Date: 2022-11-22 DOI: 10.1039/D2OB02006H
Abstract
A simple and expeditious method for the regioselective synthesis of N1-substituted-4-nitropyrazole-5-carboxylates was developed. The method involves cyclocondensation of ethyl 4-(dimethylamino)-3-nitro-2-oxobut-3-enoate with a series of monosubstituted hydrazines to give N1-substituted-4-nitropyrazole-5-carboxylates with excellent regioselectivity and good yields. Solvent effects on regioselectivity of the cyclocondensation were examined.
Recommended Literature
- [1] Dissolution of cork biopolymers in biocompatible ionic liquids Helga Garcia,Rui Ferreira,Marija Petkovic,Jamie L. Ferguson,Maria C. Leit?o,H. Q. Nimal Gunaratne,Luís Paulo N. RebeloGreen Chem., 2010,12, 367-369 10.1039/B922553F
- [2] Embedding heteroatoms: an effective approach to create porphyrin-based functional materials Norihito Fukui,Keisuke Fujimoto,Hideki Yorimitsu,Atsuhiro OsukaDalton Trans., 2017,46, 13322-13341 10.1039/C7DT02815F
- [3] Establishing empirical design rules of nucleic acid templates for the synthesis of silver nanoclusters with tunable photoluminescence and functionalities towards targeted bioimaging applications? Jason Y. C. Lim,Yong Yu,Guorui Jin,Kai Li,Yi Lu,Jianping XieNanoscale Adv., 2020,2, 3921-3932 10.1039/D0NA00381F
- [4] Essential effect of the electrolyte on the mechanical and chemical degradation of LiNi0.8Co0.15Al0.05O2 cathodes upon long-term cycling?? Xiaoming Liu,Zachary D. Hood,Wangda Li,Donovan N. Leonard,Arumugam Manthiram,Miaofang ChiJ. Mater. Chem. A, 2021,9, 2111-2119 10.1039/D0TA07814J
- [5] Excellent mechanical performance and enhanced dielectric properties of OBC/SiO2 elastomeric nanocomposites: effect of dispersion of the SiO2 nanoparticles? Xing Zhao,Lu Bai,Rui-Ying Bao,Zheng-Ying Liu,Ming-Bo Yang,Wei YangRSC Adv., 2017,7, 46297-46305 10.1039/C7RA08074C
- [6] Emulsion technologies for multicellular tumour spheroid radiation assays? Kay S. McMillan,Anthony G. McCluskey,Annette Sorensen,Marie Boyd,Michele ZagnoniAnalyst, 2016,141, 100-110 10.1039/C5AN01382H
- [7] Fc microparticles can modulate the physical extent and magnitude of complement activity? David White,Sean R. StowellBiomater. Sci., 2017,5, 463-474 10.1039/C6BM00608F
- [8] Enabling high-throughput single-animal gene-expression studies with molecular and micro-scale technologies Jason WanLab Chip, 2020,20, 4528-4538 10.1039/D0LC00881H
- [9] Fe(iii)-mediated isomerization of α,α-diarylallylic alcohols to ketones via radical 1,2-aryl migration? Ziyang Deng,Changwei Chen,Sunliang CuiRSC Adv., 2016,6, 93753-93755 10.1039/C6RA20007A
- [10] Emulsion soft templating of carbide-derived carbon nanospheres with controllable porosity for capacitive electrochemical energy storage? M. Zeiger,N. J?ckel,P. Strubel,L. Borchardt,R. Reinhold,W. Nickel,J. Eckert,V. Presser,S. KaskelJ. Mater. Chem. A, 2015,3, 17983-17990 10.1039/C5TA03730A
Journal Name：Organic & Biomolecular Chemistry
research_products
-
CAS no.: 89640-58-4
![1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol](https://ossimg.kuujia.com/scimg/1271000/1270529-38-8x500.png)
![N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide](https://ossimg.kuujia.com/scimg/1444500/1444113-98-7x500.png)
![2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid](https://ossimg.kuujia.com/scimg/2138500/2138166-62-6x500.png)
![2-(1H-indol-3-yl)-N-{[6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]methyl}acetamide](https://ossimg.kuujia.com/scimg/2034500/2034271-14-0x500.png)