Oxidation by Bromine Bromine water oxidizes aldehyde,but not ketone or alcohol;forms aldonic acid. Example CHO COOH aldehyde acid 0= H OH H-OH H-OH (CHOH) Br2 HO-H Br2 HO-H H20 (CHOH) H-OH H,0 H-OH CH,OH CH,OH aldose aldonic acid H-OH H -OH (glyconic acid) CH,OH CH,OH glucose gluconic acid Copyright 2005 Pearson Prentice Hall,Inc. => Chapter 23 16
Chapter 23 16 Oxidation by Bromine Bromine water oxidizes aldehyde, but not ketone or alcohol; forms aldonic acid. =>
Oxidation by Nitric Acid Nitric acid oxidizes the aldehyde and the terminal alcohol:forms aldaric acid. Example CHO COOH H-OH H-OH aldehyde CHO acid COOH HNO3 HO-H HNO3 HO-H (CHOH) (CHOH) H-OH H-OH alcohol CH,OH acid COOH H-OH H-OH aldose aldaric acid (glycaric acid) CH,OH COOH glucose glucaric acid Copyright 2005 Pearson Prentice Hall,Inc. => Chapter 23 17
Chapter 23 17 Oxidation by Nitric Acid Nitric acid oxidizes the aldehyde and the terminal alcohol; forms aldaric acid. =>