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ChemicalBook CAS DataBase List Imidazo[1,2-a]pyrimidine
274-95-3

Imidazo[1,2-a]pyrimidine synthesis

2synthesis methods
-

Yield:274-95-3 5 g

Reaction Conditions:

with hydrogen bromide in ethanol;water; for 18 h;Reflux;

Steps:

1.1.1 Synthesis of intermediate C-1

In a 250 ml three-neck round bottom flask, 2-aminopyrimidine (5 g),Bromoacetaldehyde diethyl acetal (20.7 g), 48% aqueous solution of bromic acid (5 ml)Ethanol (50 ml) was added and the mixture was refluxed with stirring for 18 hours. The reaction solution was cooled to room temperature Silica gel was adsorbed. Through column separation using dichloromethane and methanol5 g of the title compound was obtained.

References:

KR2017/126059,2017,A Location in patent:Paragraph 0069; 0072; 0073; 0076; 0077

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