Problem: The interconversion of α- and β- diastereomers of a carbohydrate is called mutarotation. Which statement is true? 1) Only enzymes can perform mutarotation – in solution these structures do not interconvert. 2) Mutarotation requires an acid catalyst (H+) to proceed. 3) Mutarotation proceeds through an acyclic (no ring) intermediate.  4) The reaction converts a D–sugar into an L–sugar.

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Problem Details

The interconversion of α- and β- diastereomers of a carbohydrate is called mutarotation. Which statement is true?

1) Only enzymes can perform mutarotation – in solution these structures do not interconvert.

2) Mutarotation requires an acid catalyst (H+) to proceed.

3) Mutarotation proceeds through an acyclic (no ring) intermediate. 

4) The reaction converts a D–sugar into an L–sugar.

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