In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 5334-39-4 as follows. name: 3-Methyl-4-nitro-1H-pyrazole
In analogy to example 6-2, 98.2 mg (0.46 mmol) of a mixture of 4-[(4-amino-3- methyl-1H-pyrazol-1-yl)methyl]benzonitrile and 4-[(4-amino-5-methyl-1H-pyrazol-1- yl)methyl]benzonitrile (intermediate 17C-2 and 18C-2) and 102 mg (0.39 mmol) 6- methyl-2-phenylquinoline-4-carboxylic acid ([CAS-No. 60538-98-9], commercially available at e.g. Enamine, Chemical Diversity Labs, Matrix, Zerenex), were reacted to give after purification using a Biotage chromatography system (25 g snap KP-Sil column, hexane / 50- 100% ethyl acetate, then ethyl acetate / 0- 100% methanol) followed by a separation and purification via preparative HPLC (method 6a) 121 mg (67% yield) of the desired example 41 and 16 mg (9.0% yield) of the desired example 42-2. N-[1-(4-cyanobenzyl)-3-methyl-1H-pyrazol-4-yl]-6-methyl-2-phenylquinoline-4- carboxamide, example 41-2: 1H-NMR (400 MHz, DMSO d6) delta (ppm) = 2.21 (s, 3H), 2.52 (s, 3H), 5.41 (s, 2H), 7.44 (d, 2H), 7.49 – 7.61 (m, 3H), 7.68 (dd, 1H), 7.85 (d, 2H), 7.90 (s, 1H), 8.06 (d, 1H), 8.23 (s, 1H), 8.30 – 8.34 (m, 3H), 8.36 (s, 1H), 10.34 (s, 1H). N-[1-(4-cyanobenzyl)-5-methyl-1H-pyrazol-4-yl]-6-methyl-2-phenylquinoline-4- carboxamide, example 42-2: 1H-NMR (400 MHz, DMSO d6) delta (ppm) = 2.24 (s, 3H), 2.53 (s, 3H), 5.47 (s, 2H), 7.32 (d, 2H), 7.50 – 7.62 (m, 3H), 7.69 (dd, 1H), 7.84 – 7.88 (m, 2H), 7.89 (s, 1H), 7.96 (s, 1H), 8.06 (d, 1H), 8.26 (s, 1H), 8.31 – 8.36 (m, 2H), 10.27 (s, 1H).
According to the analysis of related databases, 5334-39-4, the application of this compound in the production field has become more and more popular.
Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; HEISLER, Iring; MUeLLER, Thomas; BUCHMANN, Bernd; CLEVE, Arwed; SIEBENEICHER, Holger; KOPPITZ, Marcus; SCHNEIDER, Dirk; BAUSER, Marcus; HEROULT, Melanie; NEUHAUS, Roland; PETRUL, Heike; QUANZ-SCHOeFFEL, Maria; (482 pag.)WO2016/202898; (2016); A1;,
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