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Chapter 23: Q37P (page 1236)

Give an equation to show the reduction of Tollens reagent by maltose.

Short Answer

Expert verified

The reduction of Tollens reagent by maltose is shown below.

Step by step solution

01

A concept:

Tollens reagent, [Ag(NH3)2]OH test is a qualitative test used to distinguish between an aldehyde an ketone. This test is also known as silver mirror test in which aldehydes are readily oxidized to corresponding carboxylic acids whereas ketones are not.

02

An equation to show the reduction of Tollens reagent by maltose. 

The reduction of Tollens reagent by maltose is shown below.

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Most popular questions from this chapter

Question:

a) Draw D-allose, the C3 epimer of glucose.

b) Draw D-talose, the C2 epimer of D-galactose.

c) Draw D-idose, the C3 epimer of D-talose. Now compare your answers with Figure 23-3.

d) Draw the C4 “epimer” of D-xylose. Notice that this “epimer” is actually an L-series sugar, and we have seen its enantiomer. Give the correct name for this L-series sugar.

Cytosine, uracil and guanine have tautomeric forms with aromatic hydroxyl groups. Draw these tautomeric forms.

Does lactose mutarotate? Is it a reducing sugar? Explain. Draw the two anomeric forms of lactose.

Use fig. 23-3 (the D-family of aldoses) to name the following aldoses.

(a) The C2 epimer of D-xylose

(b) The C3 epimer of D-erythrose

(c) The C3 epimer of D-altros

(d) The enantiomer of D-talose

(e) The C-5 epimer of D-idose

Draw the following monosaccharides, using chair conformations for the pyranoses and Haworth projections for the furanoses.

(a)α‐D‐mannopyranose(C2epimerofglucose)(b)β‐D‐galactopyranose(C4epimerofglucose)(c)β‐D‐allopyranose(C3epimerofglucose)(d)α‐D‐arabinofuranose(e)β‐D‐ribofuranose(C2epimerofarabinose)
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