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 31P
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 31P
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 31P
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 31P
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 31P
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 31P
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 31P
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 21 Solutions
Organic Chemistry
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- Consider the tetrasaccharide stachyose drawn below. Stachyose is found in white jasmine, soybeans, and lentils. Because humans cannot digest it, its consumption causes flatulence.a. Label all glycoside bonds.b. Classify each glycosidic linkage as αα or ββ and use numbers to designate its location between two rings (e.g., 1→→4-ββ)-c. What products are formed when stachyose is hydrolyzed with H33O++?d. Is stachyose a reducing sugar?e. What product is formed when stachyose is treated with excess CH33I, Ag22O?f. What products are formed when the product in (e) is treated with H33O++?arrow_forward17. .Draw the dash-wedge structure for the beta-furanose anomer of the L-ketohexose shown below.arrow_forwarda hexose if it has 6 C's, and so forth. ? Explainarrow_forward
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