What is the missing reagent in the reaction below?

Name: What is the missing reagent in the reaction below?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The reaction involves the conversion of a ketone to an imine. This reaction is typically carried out using a primary amine and a mild acid to prevent over-reaction to the secondary or tertiary imine. Therefore, the best choice for the missing reagent is option B, which uses diethylamine as the primary amine and mild acid.

What Is the Missing Reagent in the Reaction Below