Question

$B{F}_3$ is used as a catalyst in various organic reactions because

• A. it is a strong reducing agent
• B. it is a highly reactive compound
• C. it is a weak Lewis acid
• D. it is a strong Lewis acid

Answer 1

Answer: (D)

As a strong Lewis acid, $B{F}_3$'s catalytic properties are used for such reactions as alkylation of aromatic hydrocarbons, polymerization of phenolic and epoxy resins as well as other isomerization, esterification, and condensation reactions.