The synthetic route of 4392-87-4 has been constantly updated, and we look forward to future research findings.
With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.4392-87-4,[2,2′-Bipyridine]-6-carboxylic acid,as a common compound, the synthetic route is as follows.
(1) Preparation of (S)-6-(4-isopropyl-1-(p-tolyl)-4,5-dihydro-1H-imidazol-2-yl)-2,2′-bipyridine:2,2-bipyridyl-6-carboxylic acid (10 mmol)In thionyl chloride solution (5 mL)Reflow reaction for 8 h,The excess thionyl chloride was removed by rotary evaporation to give a pale yellow oil.Dissolve it in an anhydrous dichloromethane solution,In ice bath conditions,Adding and dissolving L-prolinol (11 mmol, 1.13 g) andTriethylamine (30mmol, 4.2 mL)In the anhydrous dichloromethane solution, after completion of the dropwise addition, the reaction was allowed to proceed at room temperature overnight.After completion of the reaction, the reaction was spun dry, ethyl acetate was added, and the insoluble material was removed by filtration.After the filtrate was spun dry, continue to add thionyl chloride (5 mL)Reacted under reflux for 8 h,The excess thionyl chloride was removed by rotary evaporation to give a reddish brown oil.Dissolve it in an anhydrous dichloromethane solution,In an ice bath, the solution was dissolved in p-toluidine (11 mmol, 1.2 g).And triethylamine (60 mmol, 8 mL)In anhydrous dichloromethane solution,After stirring at room temperature overnight,Add 10% aqueous sodium hydroxide solution (35 mL),Stirring was continued for 8-12 h at room temperature. After completion, the mixture was separated and the aqueous phase was extracted with dichloromethane three times.Drying with anhydrous magnesium sulfate, suction filtration, spin-drying and column chromatography (eluent ratio PE/EA = 3/1 to 1/10) gave the corresponding NNN’ ligand.Brown solid; yield: 50%;
The synthetic route of 4392-87-4 has been constantly updated, and we look forward to future research findings.
Reference£º
Patent; Zhengzhou University; Hao Xinqi; Zhu Zhihui; Wang Yanbing; Wang Xiaodie; Wang Mengling; Zhao Xuemei; Zhu Xinju; Song Maoping; (8 pag.)CN109970814; (2019); A;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI