/*! 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} Q9-7P b How would you prepare the follow... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 9: Q9-7P b (page 272)

How would you prepare the following carbonyl compounds starting from an alkyne (reddish-brown Br)?

b.

Short Answer

Expert verified
Answer

Step by step solution

01

Hydroboration – oxidation reaction

Borane adds rapidly to an alkyne resulting in vinylic borane can be oxidized by H2O2to yield an enol. Tautomerization then gives either a ketone or an aldehyde.

  • The terminal alkyne leads to the formation of aldehyde
  • The internal alkyne leads to the formation of ketone
02

 Formation of compound a

Terminal alkyne undergoes two additions, giving a doubly hydroborated intermediate. Oxidation with H2O2replaces both boron atoms with oxygen and generates the aldehyde.

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

Give IUPAC names for the following compounds:

How would you prepare the following carbonyl compounds starting from an alkyne (reddish brown Br)?

How would you carry out the following reactions to introduce deuterium into organic molecules?

(a)

b.

c.

d.

Question: How would you carry out the following reactions?

What products would you obtain by hydration of the following alkynes?
See all solutions

Recommended explanations on Chemistry Textbooks

Nuclear Chemistry

Read Explanation

Organic Chemistry

Read Explanation

Inorganic Chemistry

Read Explanation

The Earths Atmosphere

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Chemistry Branches

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.