Curved arrows are used in Organic Chemistry t | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The reaction shown is a $[3,3]-$sigmatropic rearrangement,specifically the Claisen rearrangement of an allyl vinyl ether.In this mechanism,the ele

Vedclass · Accepted Answer

The structure of $3-$methylpent-$3-$en-$2-$one

Vedclass · Answer

(B) The reaction shown is a $[3,3]-$sigmatropic rearrangement,specifically the Claisen rearrangement of an allyl vinyl ether.In this mechanism,the electrons move in a cyclic transition state.The bond between the oxygen and the allylic carbon breaks,and a new carbon-carbon bond forms between the terminal carbon of the allyl group and the alpha-carbon of the vinyl group.This results in the formation of an unsaturated carbonyl compound.For the given reactant (allyl vinyl ether),the product is $3-$methylpent-$4-$enal (or a related isomer depending on the specific substitution pattern shown in the diagram).Based on the provided options,the structure corresponding to the rearrangement of the allyl vinyl ether is $3-$methylpent-$4-$enal or its isomer $3-$methylpent-$3-$en-$2-$one depending on the specific starting material structure. Given the options,$B$ represents the correct unsaturated carbonyl product.

Curved arrows are used in Organic Chemistry to show the movement of electrons in the mechanism of a reaction. The correct product of the following reaction is

Similar Questions

An electrophile $E^{\oplus}$ attacks the benzene ring to form an intermediate $\sigma$-complex. Which of the following $\sigma$-complexes has the lowest energy?

Which statement from the following is correct for homolytic fission?

The enol percentage of the following compound is maximum for:

What is the fission of covalent bonds?

The major product $A$ obtained in the above reaction is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module