Glucose, when heated with CH3OH, in presence of dry HCl gas, α−methyl glucosides and β−methyl glucosides are formed. This is because it contains:
A
an aldehyde group
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B
CH2OH group
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C
a ring structure
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D
five hydroxy groups
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Solution
The correct option is C a ring structure Glucose reacts with methanol, in presence of dry HCl, to form alpha and beta methyl glycosides. C6H12O6+CH3OH→α−C6H11O6CH3X+β−C6H11O6CH3Y Formation of alpha and beta methyl glycosides is due to the ring structure of glucose, as the methyl alcohol can attack the anomeric carbon in 2 ways, leading to these two configurations.