/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q77P-b Propose mechanisms for the follo... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 22: Q77P-b (page 1206)

Propose mechanisms for the following reactions.

Short Answer

Expert verified

Mechanism followed as:

Step by step solution

01

Step-by-Step Solution Step 1: Claisen condensation

It is the nucleophilic acyl substitution reaction of ether forming the enolate ion with another ether group that leads to the form 伪,尾 unsaturated ketone.

02

Formation of the product

As the hydrogen is protonated from the reacting species which is ether formation of enolate ion occurs which combines with another group of ether followed by the removal of -OR formation of 伪,尾unsaturated ketone occur.

03

Mechanism

The chemical reaction between carbonyl and methoxide takes place which leads to the generation of an anionic intermediate. After reaction with the given ester lead to the formation of the dicarbonyl compound.

The mechanism is as follows:

CLAISEN CONDENSATION

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Question:Show how you would use an aldol, Claisen, or another type of condensation to make each compound.

a.

Question: Predict the products of these reaction sequences.

a.

Show how you would use the acetoacetic ester synthesis to make the following compounds

(A true story.) Chemistry lab students added an excess of ethyl magnesiumbromide to methyl furoate, expecting the Grignard reagent to add twice and form the tertiary alcohol. After water workup, they found that the product was a mixture of two compounds. One was the expected product having two ethyl groups, but the unexpected product had added three ethyl groups. Propose a mechanism to explain the formation of the unexpected product.

Propose a mechanism for the conjugate addition of a nucleophile (Nuc:-) to acrylonitrile (H2C=CHCN) and to nitroethylene. Use resonance forms to show how the cyano and nitro groups activate the double bond toward conjugate addition.
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Analysis

Read Explanation

The Earths Atmosphere

Read Explanation

Inorganic Chemistry

Read Explanation

Physical Chemistry

Read Explanation

Kinetics

Read Explanation

Chemical Reactions

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.