How the tautomerization of a carbohydrate could be prevented?
A) Perform a Fischer methylation of the anomeric OH group.
B) Perform permethylation of the carbohydrate.
C) Treat the carbohydrate with LiAlH4.
D) Prepare a solution of the carbohydrate in Br2/H2O
E) It is impossible to prevent tautomerization.
Correct Answer:
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