{"id":12043,"date":"2023-01-06T03:44:51","date_gmt":"2023-01-05T19:44:51","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=12043"},"modified":"2023-01-06T03:44:51","modified_gmt":"2023-01-05T19:44:51","slug":"kravtsov-d-n-et-al-published-their-research-in-doklady-akademii-nauk-sssr-in-1971-cas-15953-73-8","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=12043","title":{"rendered":"Kravtsov, D. N. et al. published their research in Doklady Akademii Nauk SSSR in 1971 | CAS: 15953-73-8"},"content":{"rendered":"

Metallotropic transitions in organomercury derivatives of pyrazoles studied by the NMR method was written by Kravtsov, D. N.;Fedorov, L. A.;Peregudov, A. S.;Nesmeyanov, A. N.. And the article was included in Doklady Akademii Nauk SSSR in 1971.Recommanded Product: 15953-73-8<\/a> This article mentions the following:<\/p>\n

The PMR spectra of 3,5-dimethyl-4-X-substituted-pyrazoles, in which X was selected from Cl, Br, or NO2, and their N-(phenylmercurio) derivatives, were obtained in CH2Cl2-CHCl3 solution with or without added C5H5N or CD3NO2. The signals from the Me protons in the -110\u00b0 to room temperature range are tabulated. The cationotropic phenomena in this group of compounds are explained by using the spectral data. The PhHg group (or H) migration between the N atoms was little affected by addition of CD3NO2 and the small amount of acceleration showed that the rearrangement is probably intramol. with a transition state in which Hg is coordinated with both N atoms. Addition of C5H5N to the system greatly accelerated the rearrangement among the PhHg derivatives The following N-phenylmercurio-3,5-dimethylpyrazoles were prepared conventionally (X and m.p. given): Cl, 143-4\u00b0; Br, 39-40\u00b0; NO2, 184-5\u00b0. 1,2-Dimethyl-4,5-dichloroimidazole, m. 49-50\u00b0, was prepared from 2-methyl-4,5-dichloroimidazole and Me2SO4 in alk. medium. In the experiment, the researchers used many compounds, for example, 4-Chloro-3,5-dimethyl-1H-pyrazole (cas: 15953-73-8Recommanded Product: 15953-73-8<\/a>).<\/p>\n

4-Chloro-3,5-dimethyl-1H-pyrazole (cas: 15953-73-8) belongs to pyrazole derivatives. Pyrazole and its derivatives are considered a pharmacologically important active scaffold that possesses almost all types of pharmacological activities. The pyrazole ring is resistant to oxidation and reduction but the groups, such as alkyl and formyl attached to the ring, are oxidized to respective acids. Only electrolytic oxidation, ozonolysis, and a strong base cause ring opening.Recommanded Product: 15953-73-8<\/a><\/p>\n

Referemce:
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

4-Chloro-3,5-dimethyl-1H-pyrazole (cas: 15953-73-8) belongs to pyrazole derivatives. Pyrazole and its derivatives are considered a pharmacologically important active scaffold that possesses almost all types of pharmacological activities. The pyrazole ring is resistant to oxidation and reduction but the groups, such as alkyl and formyl attached to the ring, are oxidized to respective acids. Only electrolytic oxidation, ozonolysis, and a strong base cause ring opening.Recommanded Product: 15953-73-8<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[131],"tags":[128],"class_list":["post-12043","post","type-post","status-publish","format-standard","hentry","category-pyrazoles-derivatives","tag-100-200"],"yoast_head":"\nKravtsov, D. 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