Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 20781-06-0, name is 2,4-Diaminopyrimidine-5-carboxaldehyde. A new synthetic method of this compound is introduced below., Recommanded Product: 2,4-Diaminopyrimidine-5-carboxaldehyde
EXAMPLE 10 2,7-Diamino-6-(2,6-dichlorophenyl)-pyrido[2,3-d]pyrimidine (Prepared by the method of U.S. Pat. No. 3,534,039). To a solution of sodium 2-ethoxyethoxide prepared from 0.14 g of sodium and 60 mL of 2-ethoxyethanol was added 2.07 g of 2,4-diamino-5-pyrimidinecarboxaldehyde, and 2.79 g of 2,6-dichlorophenylacetonitrile. The mixture was heated at reflux for 4 hours, allowed to cool to room temperature, and the precipitated product was filtered and washed with diethyl ether to give 2,7-diamino-6-(2,6-dichlorophenyl)-pyrido[2,3-d]-pyrimidine, mp 325-332 C.
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Reference:
Patent; Warner-Lambert Company; US5620981; (1997); A;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia