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.Draw a resonance form for the unsaturated carbonyl that accounts for this reactivity.

Question

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.Draw a resonance form for the unsaturated carbonyl that accounts for this reactivity.

Quizplus · Accepted Answer

The Answer of 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.Draw a resonance form for the unsaturated carbonyl that accounts for this reactivity.

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