The pericyclic reactions involved in the reaction shown are to be identified and a mechanism for the reactions is to be proposed. Concept introduction: In electrocyclic reactions cyclic alkenes or dienes react to yield acyclic conjugated dienes as poducts. A σ bond is broken, a new π bond is formed and some π bonds change their positions. The reactions are reversible. In cycloaddition reactions two unsaturated molecules add to one another to yield a cyclic product.

Question

You are trying to decide if there is a single reagent you can add that will make the following synthesis possible without any other major side products: xi 1. ☑ 2. H₂O хе i Draw the missing reagent X you think will make this synthesis work in the drawing area below. If there is no reagent that will make your desired product in good yield or without complications, just check the box under the drawing area and leave it blank. Click and drag to start drawing a structure. There is no reagent that will make this synthesis work without complications. : ☐ S ☐

Answer 1

Question

Chapter 30.SE, Problem 15MP

Interpretation Introduction

Interpretation:

The pericyclic reactions involved in the reaction shown are to be identified and a mechanism for the reactions is to be proposed.

Concept introduction:

In electrocyclic reactions cyclic alkenes or dienes react to yield acyclic conjugated dienes as poducts. A σ bond is broken, a new π bond is formed and some π bonds change their positions. The reactions are reversible.

In cycloaddition reactions two unsaturated molecules add to one another to yield a cyclic product.

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