Exhibit 19-4 α,β-Unsaturated Aldehydes and Ketones Can Undergo Reaction with Nucleophiles at Nucleophiles

question 22

Multiple Choice

Exhibit 19-4
α,β-Unsaturated aldehydes and ketones can undergo reaction with nucleophiles at the β carbon,as shown below.
-Refer to Exhibit 19-4.This reaction is called _____ reaction.

• A)a 1,2-conjugate addition.
• B)an electrophilic addition.
• C)a direct addition
• D)a 1,2-addition.

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