The following reaction will undergo [2 + 2] intramolecular cycloaddition reaction. 

(i) Explain why intramolecular reactions are generally favorable.
(ii) Draw the product formed in the given [2 + 2] cyclization reaction (ignore other possible reactions).

• A. (i) Intramolecular reactions are generally favorable because the two reacting groups are within the same molecule, reducing the entropy loss associated with bringing two separate molecules together.(ii)
• B. (i) Intramolecular reactions are generally favorable because the two reacting groups are within the same molecule, reducing the entropy loss associated with bringing two separate molecules together.(ii)
• C. (i) Intramolecular reactions are generally favorable because they only involve two molecules of the same reactant, reducing the energy required for the reaction to occur.(ii)
• D. (i) Intramolecular reactions are generally favorable because they only involve two molecules of the same reactant, reducing the energy required for the reaction to occur.(ii)

Answer: (B)