Some common heterocyclic compound, 92933-47-6, name is 5-Isopropyl-1H-pyrazole-3-carboxylic acid, molecular formula is C7H10N2O2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. Recommanded Product: 92933-47-6
General procedure: The aqueous solution of Eu(NO3)3.6H2O (1mmol) was treated with threefold excess of ethanolic solution of HIPA (3mmol) and the resulting mixture was thoroughly mixed on magnetic stirrer. The aqueous solution of NaOH was added drop wise to adjust the pH of mixture by 6-7. After constant stirring of 3 hr, off white precipitates of C1 binary complex were appeared which were isolated by vacuum filtration, washed with ethanol and water respectively, and then dried in desiccators.[19] Similarly, ternary complexes C2-C5 were synthesized by adding ethanolic solution of dmbipy, dipy, dmph and phen (1mmol) respectively, to the reaction mixture of europium(III) nitrate (1mmol) and ligand HIPA (3mmol) prior to adjustment of pH of the solution. Binary complex of gadolinium ion with ligand HIPA [Gd(IPA)3.2H2O] is synthesized by similar method as of C1 to calculate the triplet state of ligand. The synthetic routes of ligand HIPA and europium (III) complexes C1-C5 are shown in Fig. 1. Eu(IPA)3.2H2O (C1): light pink powder, yield 71%; IR: cm1 3450 (s), 3180 (s), 3090 (s), 2961 (s), 2371 (w), 1644 (s), 1507 (w), 1411 (m), 1301 (s), 1250 (s), 1019 (m), 840 (m), 814 (m), 780 (m), 651 (w), 566 (w), 497 (w), 428 (w).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 92933-47-6, its application will become more common.
Reference:
Article; Dhankhar, Priyanka; Bedi, Manisha; Khanagwal, Jyoti; Taxak, Vinod B.; Khatkar, Satyender P.; Doon, Priti Boora; Spectroscopy Letters; vol. 53; 4; (2020); p. 256 – 269;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics