HPLC of Formula: C5H8N2. In 2020.0 MOL CATAL published article about HIGHLY EFFICIENT SYNTHESIS; X-RAY STRUCTURE; BENZOFURAN DERIVATIVES; ARYLBORONIC ACIDS; ROOM-TEMPERATURE; WATER OXIDATION; PHENOLS; LIGAND; COMPLEXES; ETHYLENE in [Marais, Lindie; Vosloo, Hermanus C. M.; Swarts, Andrew J.] North West Univ, Focus Area Chem Resource Beneficiat, Catalysis & Synth Res Grp, 11 Hoffman St, ZA-2520 Potchefstroom, South Africa in 2020.0, Cited 49.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6.
A catalyst system comprising of pyrazolylpyridineamine/Cu(I)/CsOH is reported. for the hydroxylation of aryl iodides and bromides with moderate to outstanding yields, without the use of an inert atmosphere. A comprehensive parameter optimisation study established optimum component concentrations: [Cu(MeCN)(4)]BF4 and 2-(1H-pyrazol-1-yl)-N-(pyridine-2-ylmethyl)ethan-1-amine (L01) (2 mol %), substrate (1 mmol), CsOH (4 mmol) and DMSO:H2O (1:1, 3 mL). Monitoring substrate conversion as a function of time revealed an induction period of 90 min, which could be eliminated through the initial in situ formation of the proposed [(L01)Cu-OH] intermediate. Eliminating the induction period resulted in complete conversion within one hour, with turnover numbers exceeding that of the benchmark catalyst system operating at an optimal catalyst loading of 0.05 mol %.
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Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics