/*! 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} 79P Draw the structure of the acycli... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 21: 79P (page 817)

Draw the structure of the acyclic polyhydroxy aldehyde that cyclizes to each hemiacetal.

a.

Short Answer

Expert verified

a

Acyclic polyhydroxy aldehyde of a.

b

Acyclic polyhydroxy aldehyde of b.

Step by step solution

01

Polydroxy aldehydes

The polyhydroxy aldehydes are simply sugar molecules. These have a minimum of 3 carbon centers.

02

Cyclization of acyclic polyhydroxy aldehydes

The cyclization takes place via the intramolecular nucleophilic attack of the OH group on the carbonyl (C=O) group of either the ketonic or the aldehydic group.

03

Acyclic polyhydroxy aldehydes for the given hemiacetals

The bond is broken at the hetero-atomic center in the ring to deduce the structure of each of the polyhydroxy aldehyde that undergoes cyclization. The oxygen atom is introduced as the carbonyl group on any one of the adjacent carbon atoms in the ring.

a. The ring is broken at the hetero-atomic center. The acyclic polyhydroxy aldehyde thus obtained is shown hereunder

Acyclic polyhydroxy aldehyde of a.

b. The ring is broken at the hetero-atomic center. The acyclic polyhydroxy aldehyde thus obtained is shown hereunder.

Acyclic polyhydroxy aldehyde of b.

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

顿谤补飞鈥倀丑别鈥俻谤辞诲耻肠迟鈥俧辞谤尘别诲鈥倃丑别苍鈥侰贬3CH2CH2CH2NH2reacts with each carbonyl compound in the presence of mild acid.

a.

b.

c.

Devise a synthesis of each alkene using a Wittig reaction to form the double bond. You may use benzene and organic alcohols having four or fewer carbons as starting materials and any required reagents

a.

b.

What carbonyl compound and alcohol are formed by hydrolysis of each acetal?

a.

b.

c.

a. How many stereogenic centers are present in -D-galactose?

b. Label the hemiacetal carbon in -D-galactose.

c. Draw the structure of -D-galactose.

d. Draw the structure of the polyhydroxy aldehyde that cyclizes to - and

-D-galactose.

e. From what you learned in Section 21.16B, what product (s) is (are) formed

when -D-galactose is treated with CH3OH and an acid catalyst?

What starting materials are needed to prepare each alkene by a Wittig reaction? When there are two possible routes, indicate which route, if any, is preferred.

a.

b

c.
See all solutions

Recommended explanations on Chemistry Textbooks

Physical Chemistry

Read Explanation

The Earths Atmosphere

Read Explanation

Organic Chemistry

Read Explanation

Chemistry Branches

Read Explanation

Chemical Analysis

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.