Adding a certain compound to certain chemical reactions, such as: 1753-48-6, 2-Aminopyrimidine-5-carbonitrile, 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, Formula: C5H4N4, blongs to pyrimidines compound. Formula: C5H4N4
Step A. Preparation of 2-chloropyrimidine-5 -carbonitrile[00222] To a stirring solution of 2-aminopyrimidine-5 -carbonitrile (1.0 g, 8.33 mmol) in CH3CN (15 ml) at room temperature under argon was added copper (II) chloride (1.679 g, 12.5 mmol) and tert-butyi nitrite (1.288 g, 12.5 mmol). The reaction mixture was placed in a preheated oil bath (60 0C) under Argon. The reaction mixture was cooled to room temperature and 20 ml of ether was added. The resulting insoluble material was filtered and the filtrate was concentrated. The crude product was dissolved in a small amount of DCM (~2 ml) and loaded onto a 40 g ISCO silica gel column which was eluted with a 20 min gradient from 0% to 100% EtOAc/Hexanes. 723 mg (61%) of 2-chloropyrimidine-5-carbonitrile was obtained as a tan solid. 1H NMR (400 MHz, CDCl3) delta ppm 8.90 (s, 2 H).
At the same time, in my other blogs, there are other synthetic methods of this type of compound,1753-48-6, 2-Aminopyrimidine-5-carbonitrile, and friends who are interested can also refer to it.
Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; WACKER, Dean, A.; ROSSI, Karen, A.; WANG, Ying; WU, Gang; WO2010/9183; (2010); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia