Draw the two possible chair conformations of the (+)- B- Galactose molecule shown below, using theaxial and equatorial bonds provided. Show all substituents and hydrogens.4.CH-ОНHOОНОНCH2OHCHONOHHOOHHOOHHOHOHOHConformation # 1Conformation # 25.With respect to the previous problem # 4, and your two chair conformations of (+)- B- Galactose..A single (-OH -- H) 1,3-diaxial steric strain interaction is 2.1 kJ/mole, and a single (-CH2OH -- H)1,3-diaxial steric strain interaction is 4.0 kJ/mole, and finally a single (-CH2OHsteric strain interaction is 4.6 kJ/mole.OH) 1,3-diaxialDetermine and Show Calculations for the total 1,3-diaxial steric strain contained in youra)conformations # 1 and # 2.b)Indicate which of your chair conformations is the most stable.Conformation # 1Conformation # 23Hr

Question
Asked Oct 15, 2019

#5

Draw the two possible chair conformations of the (+)- B- Galactose molecule shown below, using the
axial and equatorial bonds provided. Show all substituents and hydrogens.
4.
CH-ОН
HO
ОН
ОН
CH2OH
CHON
OH
HO
OH
HO
OH
HO
H
OH
OH
Conformation # 1
Conformation # 2
5.
With respect to the previous problem # 4, and your two chair conformations of (+)- B- Galactose..
A single (-OH -- H) 1,3-diaxial steric strain interaction is 2.1 kJ/mole, and a single (-CH2OH -- H)
1,3-diaxial steric strain interaction is 4.0 kJ/mole, and finally a single (-CH2OH
steric strain interaction is 4.6 kJ/mole.
OH) 1,3-diaxial
Determine and Show Calculations for the total 1,3-diaxial steric strain contained in your
a)
conformations # 1 and # 2.
b)
Indicate which of your chair conformations is the most stable.
Conformation # 1
Conformation # 2
3
Hr
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Draw the two possible chair conformations of the (+)- B- Galactose molecule shown below, using the axial and equatorial bonds provided. Show all substituents and hydrogens. 4. CH-ОН HO ОН ОН CH2OH CHON OH HO OH HO OH HO H OH OH Conformation # 1 Conformation # 2 5. With respect to the previous problem # 4, and your two chair conformations of (+)- B- Galactose.. A single (-OH -- H) 1,3-diaxial steric strain interaction is 2.1 kJ/mole, and a single (-CH2OH -- H) 1,3-diaxial steric strain interaction is 4.0 kJ/mole, and finally a single (-CH2OH steric strain interaction is 4.6 kJ/mole. OH) 1,3-diaxial Determine and Show Calculations for the total 1,3-diaxial steric strain contained in your a) conformations # 1 and # 2. b) Indicate which of your chair conformations is the most stable. Conformation # 1 Conformation # 2 3 Hr

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Expert Answer

Step 1

1,3-diaxial steric strain for a single (-OH---H) = 2.1 kJ/mol

1,3-diaxial steric strain for a single (-CH2OH---H) = 4.0 kJ/mol

1,3-diaxial steric strain for a single (-CH2OH---OH) = 4.6 kJ/mol

Step 2

(a)

The 1,3-diaxial steric strain interaction ...

H
CH-он
-он
он
Н.
H
он
н
Он
Conformation
н
сн-он
н
но
Он
Conformation 2
н
н
но
Он
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H CH-он -он он Н. H он н Он Conformation н сн-он н но Он Conformation 2 н н но Он

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