Adding a certain compound to certain chemical reactions, such as: 35277-02-2, name is 4-Fluoro-1H-pyrazole, belongs to pyrazoles-derivatives compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 35277-02-2, category: pyrazoles-derivatives
To a solution of isopropyl (R)-2-amino-2-(4- bromophenyl)-4,4-dimethylpentanoate (420 mg, 1.23 mmol) in dioxane (6 mL) were added 4-fluoro-1H-pyrazole (739 mg, 8.59 mmol), cesium carbonate (3.20 g,9.82 mmol), 2-di-tert-butylphosphino-3 ,4,5,6-tetramethyl-2?,4?,6?-triisopropyl-1,1?-biphenyl (590 mg, 1.23 mmol) and bis(dibenzylideneacetone)palladium(0)(353 mg, 0.61 mmol). The reaction mixture was sparged with argon for 5 mm, andheated at 90 C for 1.5 h. Then to the mixture were added 4-fluoro-1H-pyrazole(317 mg, 3.68 mmol), cesium carbonate (1.60 g, 4.91 mmol), 2-di-tert-butylphosphino-3 ,4,5,6-tetramethyl-2?,4?,6?-triisopropyl- 1,1 ?-biphenyl (354 mg,0.74 mmol) and bis(dibenzylideneacetone)palladium(0) (212 mg, 0.23 mmol). Themixture was sparged and heated at 90 C for 20 h. The reaction mixture was thenpurified by silica gel column chromatography (0-100% gradient EtOAc/hexanes)to give the product.
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 4-Fluoro-1H-pyrazole, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; GILEAD SCIENCES, INC.; CAI, Zhenhong R.; CHO, Aesop; BUENROSTRO, Ana Zurisadai Gonzalez; HAN, Xiaochun; JABRI, Salman Y.; MCFADDEN, Ryan; QI, Yingmei; VOIGT, Johannes; YANG, Hong; XU, Jie; XU, Lianhong; (545 pag.)WO2019/75291; (2019); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics