Provide a step-by-step mechanism for the reaction below. Include all intermediates, formal charges and correct arrow pushing of electrons. 
Definitions:
Precocious
Characterized by early development or maturity, especially in mental aptitude or emotional capacity.
Large Vocabulary
The possession of a broad and extensive collection of words and terms within an individual's language repertoire.
Speaking Early
The development milestone where a child begins to use words and form simple sentences at an earlier age than typical developmental timelines.
Gender Stereotypes
Oversimplified beliefs about the characteristics, attributes, and behaviors deemed appropriate for men and women based on their gender.
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