{"id":11829,"date":"2022-12-05T06:02:39","date_gmt":"2022-12-04T22:02:39","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=11829"},"modified":"2022-12-05T06:02:39","modified_gmt":"2022-12-04T22:02:39","slug":"maurya-mannar-r-s-team-published-research-in-dalton-transactions-in-45-cas-4551-69-3","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=11829","title":{"rendered":"Maurya, Mannar R.’s team published research in Dalton Transactions in 45 | CAS: 4551-69-3"},"content":{"rendered":"

Maurya, Mannar R. published the artcileVanadium(IV<\/smallcap> and V<\/smallcap>) complexes of pyrazolone based ligands: Synthesis, structural characterization and catalytic applications<\/i><\/b>, Related Products of pyrazoles-derivatives<\/a>, the publication is Dalton Transactions (2016), 45(43), 17343-17364, database is CAplus and MEDLINE.<\/p>\n

The ONO donor ligands obtained from the condensation of 4-benzoyl-3-methyl-1-phenyl-2-pyrazoline-5-one (Hbp) with benzoylhydrazide (H2<\/sub>bp-bhz I), furoylhydrazide (H2<\/sub>bp-fah II), nicotinoylhydrazide (H2<\/sub>bp-nah III) and isonicotinoylhydrazide (H2<\/sub>bp-inh IV), upon treatment with [VIV<\/sup>O(acac)2<\/sub>], give [VIV<\/sup>O(bp-bhz)(H2<\/sub>O)] 1<\/strong>, [VIV<\/sup>O(bp-fah)(H2<\/sub>O)] 2<\/strong>, [VIV<\/sup>O(bp-nah)(H2<\/sub>O)] 3<\/strong> and [VIV<\/sup>O(bp-inh)(H2<\/sub>O)] 4<\/strong>, resp. At neutral pH the in situ generated aqueous K[H2<\/sub>VV<\/sup>O4<\/sub>] reacts with ligands I and II, forming potassium salts, K(H2<\/sub>O)2<\/sub>[VV<\/sup>O2<\/sub>(bp-bhz)] 5<\/strong> and K(H2<\/sub>O)2<\/sub>[VV<\/sup>O2<\/sub>(bp-fah)] 6<\/strong>, while ligands III and IV give neutral complexes, [VV<\/sup>O2<\/sub>(Hbp-nah)] 9<\/strong> and [VV<\/sup>O2<\/sub>(Hbp-inh)] 10<\/strong>, resp. Acidification of aqueous solutions of 5<\/strong> and 6<\/strong> with HCl also gives neutral complexes [VV<\/sup>O2<\/sub>(Hbp-bhz)] 7<\/strong> and [VV<\/sup>O2<\/sub>(Hbp-fah)] 8<\/strong>, resp. Complexes 1<\/strong>–4<\/strong>, upon slow aerial oxidation in methanol, convert into monooxidovanadium(V<\/smallcap>) complexes, [VV<\/sup>O(bp-bhz)(OMe)] 11<\/strong>, [VV<\/sup>O(bp-fah)(OMe)] 12<\/strong>, [VV<\/sup>O(bp-nah)(OMe)] 13<\/strong> and [VV<\/sup>O(bp-inh)(OMe)] 14<\/strong>, resp. All complexes were characterized by various spectroscopic techniques like FTIR, UV-visible, EPR (for complexes 1<\/strong>–4<\/strong>) and NMR (1<\/sup>H, 13<\/sup>C and 51<\/sup>V), elemental anal., TG and single crystal x-ray diffraction (for complexes 5<\/strong>–10<\/strong> and 12<\/strong>). In the solid state, all complexes characterized by x-ray diffraction show the metal ion 5-coordinated in a distorted square pyramidal geometry. Complexes 11<\/strong>–14<\/strong> were tested as catalysts for the one-pot three-component (ethylacetoacetate, benzaldehyde and ammonium acetate) dynamic covalent assembly, via Hantzsch reaction, using hydrogen peroxide as oxidant in solution and under solvent-free conditions. The complexes are also active catalysts for the oxidation of tetralin to tetralone with H2<\/sub>O2<\/sub> as oxidant. The influence of the amounts of catalyst and oxidant, and solvent, temperature and time on the catalyzed reactions was investigated.<\/p>\n

Dalton Transactions published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, Related Products of pyrazoles-derivatives<\/a>.<\/p>\n

Referemce:
https:\/\/en.wikipedia.org\/wiki\/Pyrazole<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Dalton Transactions published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, Related Products of pyrazoles-derivatives<\/a>.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[808,131],"tags":[740],"class_list":["post-11829","post","type-post","status-publish","format-standard","hentry","category-4551-69-3","category-pyrazoles-derivatives","tag-m-w250-300"],"yoast_head":"\nMaurya, Mannar R.'s team published research in Dalton Transactions in 45 | CAS: 4551-69-3 | pyrazoles-derivatives<\/title>\n<meta name=\"description\" content=\"Maurya, Mannar R. published the artcileVanadium(IV and V) complexes of pyrazolone based ligands: Synthesis, structural characterization and catalytic applications, Related Products of pyrazoles-derivatives, the publication is Dalton Transactions (2016), 45(43), 17343-17364, database is CAplus and MEDLINE.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pyrazoles-derivatives.com\/?p=11829\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Maurya, Mannar R.'s team published research in Dalton Transactions in 45 | CAS: 4551-69-3 | pyrazoles-derivatives\" \/>\n<meta property=\"og:description\" content=\"Maurya, Mannar R. published the artcileVanadium(IV and V) complexes of pyrazolone based ligands: Synthesis, structural characterization and catalytic applications, Related Products of pyrazoles-derivatives, the publication is Dalton Transactions (2016), 45(43), 17343-17364, database is CAplus and MEDLINE.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.pyrazoles-derivatives.com\/?p=11829\" \/>\n<meta property=\"og:site_name\" content=\"pyrazoles-derivatives\" \/>\n<meta property=\"article:published_time\" content=\"2022-12-04T22:02:39+00:00\" \/>\n<meta name=\"author\" content=\"Jessica.F\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jessica.F\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.pyrazoles-derivatives.com\/?p=11829\",\"url\":\"https:\/\/www.pyrazoles-derivatives.com\/?p=11829\",\"name\":\"Maurya, Mannar R.'s team published research in Dalton Transactions in 45 | CAS: 4551-69-3 | pyrazoles-derivatives\",\"isPartOf\":{\"@id\":\"http:\/\/www.pyrazoles-derivatives.com\/#website\"},\"datePublished\":\"2022-12-04T22:02:39+00:00\",\"author\":{\"@id\":\"http:\/\/www.pyrazoles-derivatives.com\/#\/schema\/person\/d9a9f27bed675392c6f363a01ffd49f1\"},\"description\":\"Maurya, Mannar R. published the artcileVanadium(IV and V) complexes of pyrazolone based ligands: Synthesis, structural characterization and catalytic applications, Related Products of pyrazoles-derivatives, the publication is Dalton Transactions (2016), 45(43), 17343-17364, database is CAplus and MEDLINE.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.pyrazoles-derivatives.com\/?p=11829#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.pyrazoles-derivatives.com\/?p=11829\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.pyrazoles-derivatives.com\/?p=11829#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"http:\/\/www.pyrazoles-derivatives.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Maurya, Mannar R.’s team published research in Dalton Transactions in 45 | CAS: 4551-69-3\"}]},{\"@type\":\"WebSite\",\"@id\":\"http:\/\/www.pyrazoles-derivatives.com\/#website\",\"url\":\"http:\/\/www.pyrazoles-derivatives.com\/\",\"name\":\"pyrazoles-derivatives\",\"description\":\"Several pyrazole derivatives possess important pharmacological activities and they have been proved useful materials in drug research. 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