Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 16078-71-0, name is Ethyl 5-amino-1-phenyl-1H-pyrazole-4-carboxylate, This compound has unique chemical properties. The synthetic route is as follows., Formula: C12H13N3O2
B. 5-Bromo-1-phenyl-1H-pyrazole-4-carboxylic acid, ethyl ester To a solution of 20.0 g of 5-amino-1-phenyl-1H-pyrazole-4-carboxylic acid, ethyl ester and 10 ml of bromine in 200 ml of chloroform was added 15.8 g of isoamyl nitrite dropwise. The reaction mixture was allowed to stir at room temperature for about 24 hours and the volatiles were removed under reduced pressure. The residue was recrystallized from ethanol/water to provide 10.0 g of 5-bromo-1-phenyl-1H-pyrazole-4-carboxylic acid, ethyl ester. Yield 38%. mp=86-89 C.
Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 16078-71-0.
Reference:
Patent; Eli Lilly and Company; US4620865; (1986); A;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics