Recently I am researching about SERIE DES AZOLES; CROSS-POLARIZATION; CHEMICAL-SHIFTS; NMR; C-13; POLYAZOLYLMETHANES; CHEMISTRY; PYRAZOLES; RMN, Saw an article supported by the Ministerio de Ciencia, Innovacion y Universidades [PGC2018-094644-B-C22]; Direccion General de InvestigaciOn en InnovaciOn de la Comunidad de Madrid [PS2018/EMT-4329 AIRTEC-CM]; University of AveiroEuropean Commission [FCTUID/QUI/00062/2019]; FCT/MEC [FCTUID/QUI/00062/2019]; FEDER, within the PT2020 Partnership; UNED. Published in PERGAMON-ELSEVIER SCIENCE LTD in OXFORD ,Authors: Silva, VLM; Silva, AMS; Claramunt, RM; Lopez, C; Sanz, D; Infantes, L; Lopez, AM; Reviriego, F; Alkorta, I; Elguero, J. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole. Recommanded Product: 3,5-Dimethyl-1H-pyrazole
Tetrakis(1H-pyrazol-l-yl)methanes are very rare compounds of which only two are known: the unsubstituted 1 obtained classically by Wicket in 1937 from carbon tetrachloride and prepared again several times and the 3,5-dimethyl substituted 2 obtained serendipitously by Pombeiro in 2009. We have now extended this group to include four new derivatives 8, 9,11 and 12 bearing methyl groups. The X-ray crystal structure of the four compounds has been determined. They have been studied by NMR both in solution (H-1, C-13, N-15) and in the solid state (C-13 and N-15). DFT calculations of the six compounds (geometries, energies and absolute shieldings) have been used to discuss the experimental observations. (C) 2019 Elsevier Ltd. All rights reserved.
Welcome to talk about 67-51-6, If you have any questions, you can contact Silva, VLM; Silva, AMS; Claramunt, RM; Lopez, C; Sanz, D; Infantes, L; Lopez, AM; Reviriego, F; Alkorta, I; Elguero, J or send Email.. Recommanded Product: 3,5-Dimethyl-1H-pyrazole
Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics