Question

Ciprofloxacin is a member of the fluoroquinoline class of antibiotics.

a. What is the chemical formula?
b. How many degree of unsaturation does the compound contain?
c. Which of its rings are aromatic?
d. Which nitrogen atoms are basic?
e. Which protons would you expect to appear between 6 ppm and 8 ppm in the proton NMR spectrum?

Answer 1

Ciprofloxacin's chemical formula is C17H18FN3O3, with four degrees of unsaturation from three aromatic rings and one double bond. Nitrogen atoms in the piperazine ring are basic, and protons on aromatic rings appear between 6-8 ppm in NMR.

Step-by-step explanation:

Ciprofloxacin is a member of the fluoroquinoline class of antibiotics. To address the student's questions:

1. The chemical formula of Ciprofloxacin is C17H18FN3O3.
2. It contains four rings with a total of four degrees of unsaturation: one for each of the three aromatic rings and one for the double bond outside of the rings.
3. The three aromatic rings in Ciprofloxacin contribute to its aromatic character.
4. The nitrogen atoms in the piperazine ring are basic due to their ability to accept protons.
5. Protons attached to the aromatic rings would typically appear between 6 ppm and 8 ppm in the proton NMR spectrum.