Question

What is the structure of Tetrahydrofuran (THF)?

• A. 5-membered saturated ring with 1 oxygen and 4 carbon atoms
• B. 4-membered ring with 1 oxygen and 3 carbon atoms
• C. 6-membered ring with 2 oxygen atoms
• D. Benzene ring containing oxygen

Hint:

Remember the important oxygen-containing heterocyclic compounds: \[ \boxed{ \begin{aligned} \text{Oxirane} &\rightarrow 3\text{-membered ring}\\ \text{Oxetane} &\rightarrow 4\text{-membered ring}\\ \text{THF} &\rightarrow 5\text{-membered saturated ring}\\ \text{Furan} &\rightarrow 5\text{-membered aromatic ring} \end{aligned} } \] THF is one of the most commonly used polar aprotic solvents.

Answer 1

The Correct Option is A

Tetrahydrofuran (THF) is a cyclic ether with a five-membered ring consisting of four $-CH_2-$ groups and one oxygen atom; the ring is fully saturated with no double bonds. It is a highly polar aprotic solvent widely used in organic synthesis because it dissolves a broad range of organic and inorganic compounds.