can anyone explain hydrolysis of sucrose with acid?

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can anyone explain hydrolysis of sucrose with acid?

followed by addition of excess phenylhydrazine can give crystal substances

2007-03-31 03:43:02 · 2 answers · asked by nadrosis 2 in Science & Mathematics ➔ Chemistry

2 answers

The reaction with phenylhydrazine is not actually a hydroxylis but results in formation of the hydrazone. It will take some time because "sucrose" [actually 2-O-(alpha-D-glucopyranosyl)-beta-D-fructofuranoside] must first hydrolyze to the components glucose and fructose which in turn react with phenylhydrazine. The hydrolysis of the disaccharide is acid catalyzed and begins with protonation of the acetal oxygen atom.

2007-04-05 14:04:47 · answer #1 · answered by Richard 7 · 0⤊ 0⤋

Reversal of the aldol cyclisation occurs.

2007-03-31 06:37:41 · answer #2 · answered by ag_iitkgp 7 · 0⤊ 0⤋