Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 28: Question 28.11 (page 1106)

Question: Referring to Figure 28.5, which d-ketohexoses have the S configuration at C3?

Fig. 28.5

Short Answer

Expert verified

Answer

All the d-ketohexoses have the R configuration.

Step by step solution

01

d-Ketohexoses

Any monosaccharide that has six carbon atoms with a ketone functional group with three chiral centers that rotate is known as a d-ketohexose. Examples of d-ketohexoses include fructose, psicose, sorbose, and tagatose

02

Identifying configuration

Among the given d-ketohexoses, the C3 carbon atom is a chiral center. The Fischer projections are converted to the wedge and dash structures as follows.

From the wedge-dash structures, all the d-ketohexoses have the R configuration.

Wedge-dash structures of the given ketohexoses

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.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

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: Label each Haworth projection as an α or β anomer and convert the Haworth projection to a six-membered ring with wedges and dashed wedges.

a.

b.

A D-aldopentose A is reduced to an optically active alditol. Upon Kiliani-Fischer synthesis, A is converted to two D-aldohexoses, B and C. B is oxidized to an optically inactive aldaric acid. C is oxidized to an optically active aldaric acid. What are the structures of A-C?

Question: Draw each stereogenic center using a Fischer projection formula.

Question:Draw the structure of (a) a ketotetrose; (b) an aldopentose; (c) an aldotetrose

Question:How many different aldoheptoses are there? How many are d-sugars? Draw all d-aldoheptoses having the Rconfiguration at C2 and C3.
See all solutions

Recommended explanations on Chemistry Textbooks

Organic Chemistry

Read Explanation

Kinetics

Read Explanation

Chemistry Branches

Read Explanation

Inorganic Chemistry

Read Explanation

Physical Chemistry

Read Explanation

The Earths Atmosphere

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.

Sign-up for free