Concept explainers
a)
Interpretation:
The product obtained when D-galactose reacts with nitric acid is to be stated.
Concept Introduction:
D-galactose is a monosaccharide molecule and it is sweet in taste as glucose. It is C-
Epimers are pair of stereoisoisomers which differ in configuration at one stereogenic center. In D-galactose molecule one terminal
Nitric acid has the chemical formula
a)
Answer to Problem 34P
The product obtained when D-galactose reacts with nitric acid is given below,
Figure 1
Explanation of Solution
The product obtained when D-galactose reacts with nitric acid is as follows,
Figure 1
b)
Interpretation:
The product obtained when D-galactose reacts with
Concept Introduction:
D-galactose is a monosaccharide molecule and it is sweet in taste as glucose. It is C-
Epimers are pair of stereoisoisomers which differ in configuration at one stereogenic center. In D-galactose molecule one terminal aldehydic and one terminal alcoholic group is present. The given ions
b)
Answer to Problem 34P
The product obtained when D-galactose reacts with
Figure 2
Explanation of Solution
The product obtained when D-galactose reacts with
Figure 2
The given ions
c)
Interpretation:
The product obtained when D-galactose reacts with
Concept Introduction:
D-galactose is a monosaccharide molecule and it is sweet in taste as glucose. It is C-
Epimers are pair of stereoisoisomers which differ in configuration at one stereogenic center. In D-galactose molecule one terminal aldehydic and one terminal alcoholic group is present.
c)
Answer to Problem 34P
The product obtained when D-galactose reacts with
Figure 3
Explanation of Solution
The product obtained when D-galactose reacts with
Figure 3
The product obtained when D-galactose reacts with
d)
Interpretation:
The product obtained when D-galactose reacts with excess
Concept Introduction:
D-galactose is a monosaccharide molecule and it is sweet in taste as glucose. It is C-
d)
Answer to Problem 34P
The product obtained when D-galactose reacts with excess
Figure 4
Explanation of Solution
The product obtained when D-galactose reacts with excess
Figure 4
e)
Interpretation:
The product obtained when D-galactose reacts with
Concept Introduction:
D-galactose is a monosaccharide molecule and it is sweet in taste as glucose. It is C-
e)
Answer to Problem 34P
The product obtained when D-galactose reacts with
Figure 5
Explanation of Solution
The product obtained when D-galactose reacts with
Figure 5
f)
Interpretation:
The product obtained when D-galactose reacts with ethanol
Concept Introduction:
D-galactose is a monosaccharide molecule and it is sweet in taste as glucose. It is C-
f)
Answer to Problem 34P
The product obtained when D-galactose reacts with ethanol
Figure 6
Explanation of Solution
The product obtained when D-galactose reacts with ethanol
Figure 6
g)
Interpretation:
The products obtained when D-galactose reacts with the given reactants are to be stated.
Concept Introduction:
D-galactose is a monosaccharide molecule and it is sweet in taste as glucose. It is C-
g)
Answer to Problem 34P
The products obtained when D-galactose reacts with the given reactants are shown in figure 7.
Figure 7
Explanation of Solution
The given reactants are hydroxylamine/trace acid, acetic anhydride/heat and
Figure 7
In the above reaction D-galactose first reacts with hydroxylamine in the presence of an acid, a compound of oxime is formed. Then it reacts with acetic anhydride with heat gives nitrile compound. Now, nitrile compound undergoes a reaction with base a compound D-Lyxose is formed.
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Chapter 20 Solutions
CHEM 262 ORG CHEM EBOOK DIGITAL DELIVERY
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- 7. Draw structure for the following compounds. D- fructose C. L-Mannose a - lactose g. B-D- ribose . نه نه ن a. e. i. Small section of amylopectin b. B-D- Galactose d. ß- maltose f. D-2-deoxyribose h. Small section of amylose j. Sucrosearrow_forward1. Consider the following molecules. Clearly circle the glycosidic bond on each structure. In the Spae provided clearly describe the type of glycosidic bond illustrated. HO-CH2 O. H. H. OH HO. HO-CH2 OH H. H. H. OH H. OH Но H. H. H. OH OH HOH2Ç HO OH OH CH2OH HI エー エエーarrow_forwardDraw the products formed when a-D-gulose is treated with each reagent. a. CH3I, Ag,0 b. CH,OH, HCI c. CeHsCH2CI, Ag20 d. CgHsCH2OH, HCI e. Ac20, pyridine f. CeHsCOCI, pyridine g. The product in (a), then H3O* h. The product in (b), then Ac,0, pyridine i. The product in (g), then CeHsCH2CI, Ag20 j. The product in (d), then CH3I, Ag20 но OH но OH OH D-gulosearrow_forward
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