Draw the diazonum cation formed when cytosine reacts with NaNO2 in the presence of HCl

1.

It is clear from the above reaction condition that the reaction represents the diazonium salt preparation.

Mechanism of the above preparation is drawn below:

1.Explanation | Common mistakes | Hint for next step

Mechanism of the diazonium salt preparation have been given in Step1. First, nitrosonium ion was formed from the combination of sodium nitrite and HCl.Then, this nitrosonium ion acts as an electrophile and the given substrate (amine derivative) acts as a nucleophile and forms the nitrogen complex.Thisis further transformed to diazonium salt in acidic media as shown above.

2.Explanation | Common mistakes

The structure of the diazonium salt has been drawn, which is formed when the given substrate is treated with sodium nitrate (NaNO2?) and the hydro chloric acid (HCl) .

please see the attached file for complete solution