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Chapter 28: Question 28.16 (page 1123)

Aldotetroses exist in the furanose form. Draw both anomers of d-erythrose.

Short Answer

Expert verified

Answer

Furanose anomers of D-Erythrose

Step by step solution

01

D-erythrose

The compound D-erythrose has the molecular formula C₄H₈O₄. It acts as a plant metabolite and is also present in animal cells.The structure of D-erythrose is as shown:

D-erythrose

02

Furanose Ring

The ring with four carbons and one oxygen atom is a furanose ring; thus, furanose is a five-membered ring, and D-erythrose usually exists in furanose form.

03

Anomers of D-erythrose

The compound D-erythrose exists in two anomeric forms, which differ in the configuration at the first carbon.

Furanose anomers of D-Erythrose

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Most popular questions from this chapter

A D-aldohexose A is formed from an aldopentose B by the Kiliani-Fischer synthesis. Reduction of A with forms an optically inactive alditol. Oxidation of B forms an optically active aldaric acid. What are the structures of A and B?

Cellobiose, a disaccharide obtained by the hydrolysis of cellulose, is composed of two glucose units joined together in a $1 \to 4 - β -$ glycoside bond. What is the structure of cellobiose?

Draw the products formed when $β$ -D galactose is treated with each reagent.

a.data-custom-editor="chemistry" ${Ag}_{2} O + {CH}_{3} I$

b.data-custom-editor="chemistry" $NAH + C_{6} H_{5} {CH}_{2} Cl$

c. The product in (b), then

d.data-custom-editor="chemistry" $The product in (b .) and H_{3} O^{+}$

e. data-custom-editor="chemistry" ${Ac}_{2} O + pyridine$

f. data-custom-editor="chemistry" $C_{6} H_{5} COCl + pyridine$

g. The product in (c), then data-custom-editor="chemistry" $C_{6} H_{5} COCl + pyridine$

What products are formed when each compound is subjected to a Kiliani–Fischer synthesis?

(a.)

(b.)

Drawthe products of each reaction.

(a.)

(b.)

See all solutions

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