Answer to Question #241766 in Organic Chemistry for rap

Question

2. Compare basic properties of pyridine and pyrimidine. Explain your opinion. For the most active compound write schemes of the reactions with hydrochloric acid and water

3. Explain why is barbituric acid so strong. Write a scheme of its reaction with one mole of NaOH. Explain, why are barbiturates not so strong acids as barbituric acid. Write a reaction of sodium salt of 5,5-diethylbarbituric acid preparation. 

Answer 1

The key difference between pyridine and pyrimidine is that pyridine has one methyl group replaced by a nitrogen atom in the benzene ring, whereas pyrimidine has two methyl groups replaced by nitrogen atoms.