Synthetic Route of 5071-61-4, These common heterocyclic compound, 5071-61-4, name is 5-Phenyl-1H-pyrazole-3-carboxylic acid, its 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.
Step 2A: Synthesis of N-{4-[(4,6-dimethylpyrimidin-2-yl)({[2- (trimethylsilyl)ethoxy] methyl}) sulfamoyl]phenyl}-3-phenyl-lH-pyrazole-5-carboxamide, 10.2 [00292] HATU (294mg, 0.77 mmol) and DIPEA (0.27 ml, 1.55 mmol) were added at rt to a stirred solution of 4-amino-N-(4,6-dimethylpyrimidin-2-yl)-N-{[2- (trimethylsilyl)ethoxy]methyl}benzene-l-sulfonamide (10.1, 211 mg, 0.52 mmol) in DMF (dry, 15 ml) followed by 5 -phenyl- lH-pyrazole-3-carboxylic acid (97mg, 0.52 mmol). The resulting mixture was stirred at rt for 48h. The solvent was removed in vacuo and the remaining solid was purified by flash column chromatography (heptane/EtOAc 100/0 to 0/100) and triturated from DMSO:CH3CN:water 1 :2: 1 to obtain 63mg (18%) of N-{4-[(4,6-dimethylpyrimidin-2-yl)({[2- (trimethylsilyl)ethoxy]methyl} )sulfamoyl]phenyl } -3 -phenyl- 1 H-pyrazole-5 -carboxamide 10.2 as a pale yellow solid.
Statistics shows that 5-Phenyl-1H-pyrazole-3-carboxylic acid is playing an increasingly important role. we look forward to future research findings about 5071-61-4.
Reference:
Patent; RAZE THERAPEUTICS, INC.; SAIAH, Eddine; (148 pag.)WO2016/40449; (2016); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics