“On water” synthesis of N-unsubstituted pyrazoles: semicarbazide hydrochloride as an alternative to hydrazine for preparation of pyrazole-3-carboxylate derivatives and 3,5-disubstituted pyrazoles?
Green Chemistry Pub Date: 2014-12-09 DOI: 10.1039/C4GC02028F
Abstract
A green, simple and highly efficient method for the synthesis of pyrazole-3-carboxylates and 3,5-disubstituted pyrazoles by cyclization of 4-aryl(hetaryl, alkyl)-2,4-diketoesters and 1,3-diketones with semicarbazide hydrochloride under “on water” conditions has been developed. This method also does not require toxic hydrazine and product purification, eliminating the use of toxic liquid chemicals.
Recommended Literature
- [1] Excellent energy storage performance in NaNbO3-based relaxor antiferroeic ceramics under a low electric field XuxinCheng,XiaomingChen,PengyuanFan 10.1007/s10832-022-00283-w
- [2] Emergence of cationic polyamine dendrimersomes: design, stimuli sensitivity and potential biomedical applications Partha Laskar,Christine DufèsNanoscale Adv., 2021,3, 6007-6026 10.1039/D1NA00536G
- [3] Emergence of microfluidic wearable technologies Joo Chuan Yeo,KenryLab Chip, 2016,16, 4082-4090 10.1039/C6LC00926C
- [4] Fate of single walled carbon nanotubes in wetland ecosystems? Joseph H. Bisesi,Tara Sabo-AttwoodEnviron. Sci.: Nano, 2014,1, 574-583 10.1039/C4EN00063C
- [5] Enabling high-throughput single-animal gene-expression studies with molecular and micro-scale technologies Jason WanLab Chip, 2020,20, 4528-4538 10.1039/D0LC00881H
- [6] Empowering microfluidics by micro-3D printing and solution-based mineral coating? Hongxia Li,Aikifa Raza,Qiaoyu Ge,Jin-You Lu,TieJun ZhangSoft Matter, 2020,16, 6841-6849 10.1039/D0SM00958J
- [7] Excellent electrochemical performance of LiFe0.4Mn0.6PO4 microspheres produced using a double carbon coating process? Yong Ping Huang,Tao Tao,Zheng Chen,Wei Han,Ying Wu,Chunjiang Kuang,Shaoxiong Zhou,Ying ChenJ. Mater. Chem. A, 2014,2, 18831-18837 10.1039/C4TA03994G
- [8] Evolution of important glucosinolates in three common Brassica vegetables during their processing into vegetable powder and in vitro gastric digestion Nan Fu,Naphaporn Chiewchan,Xiao Dong ChenFood Funct., 2020,11, 211-220 10.1039/C9FO00811J
- [9] Fast-Track to Research Data Management in Experimental Material Science-Setting the Ground for Research Group Level Materials Digitalization. LarsBanko,AlfredLudwig 10.1021/acscombsci.0c00057
- [10] Excimer and exciplex formation in a pair of bright phosphorescent isomers constructed from Cu3(pyrazolate)3 and Cu3I3 coordination luminophores? Shun-Ze Zhan,Mian Li,Xiao-Ping Zhou,Dan Li,Seik Weng NgRSC Adv., 2011,1, 1457-1459 10.1039/C1RA00566A
Journal Name：Green Chemistry
research_products
-
CAS no.: 89640-58-4
![N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide](https://ossimg.kuujia.com/scimg/1444500/1444113-98-7x500.png)
![1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol](https://ossimg.kuujia.com/scimg/1271000/1270529-38-8x500.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)