Which of the following statements about cycloaddition reactions is true?
A)Cycloaddition reactions occur only intermolecularly.
B)Cycloaddition reactions occur only intramolecularly.
C)Cycloaddition reactions form a cyclic product with two new p bonds.
D)Cycloaddition reactions can be intramolecular or intermolecular.

Question

Quizplus · Accepted Answer

Cycloaddition reactions can involve the reaction of two molecules (intermolecular) or one molecule (intramolecular) and form a cyclic product with two new p bonds. Therefore, choice D is the correct answer. Choices A and B are incorrect because cycloaddition reactions can occur both intermolecularly and intramolecularly. Choice C is incorrect because the formation of two new p bonds is not always the case in cycloaddition reactions; some reactions may form only one new p bond or may even break an existing p bond.

Which of the Following Statements About Cycloaddition Reactions Is True