Draw the major organic product for the reaction of 1-phenylpropan-1-one with the provided phosphonium ylide in part 1. In part 2

Question

Fofino [41]

3 years ago

9

Draw the major organic product for the reaction of 1-phenylpropan-1-one with the provided phosphonium ylide in part 1. In part 2

answer the question about the transformation.

Chemistry

2 answers:

ipn [44] · Answer 1 · 2022-07-04T10:12:21+03:00

Answer:

The major product formed is a benzyl allyl compound, namely 2-methylene propylbenzene

Explanation:

The product formed from this Wittig reaction with phosphonium ylide is a phenylallyl compound, 2-methylene propylbenzene. Structure and reaction synthesis is attached in file.

The types of transformation involved are:

alkylation (as there is a transfer of alkyl group)
addition (reaction of ylide)

Ilia_Sergeevich [38] · Answer 2 · 2022-07-04T11:32:37+03:00

Answer:

2-methylene propylbenzene (major product)

Explanation:

This reaction yields olefins and organophosphorus compound and is also known as wittig olefination. The reactants fits the category of a ketone (1-phenylpropan-1-one) and a Wittig reagent (phosphonium ylide).

Part 1: Answer in the fig. Below.

1-phenylpropan-1-one + phosphonium ylide ➡ phenylallyl compound + 2-methylene propylbenzene (major product)

Part 2.

Classical mechanisms that happened during its transformation are thus;

• nucleophilic addition

• Elimination

• cycloaddition

• [2+2]/retro-[2+2] mechanism.