CH3CH2CH2 H Oxidation of 1 Alcohols" H ·1°alcohol to aldehyde to carboxylic acid Difficult to stop at aldehyde Use pyridinium chlorochromate(PCC) to limit the oxidation. ·PCC can also be used to oxidize2° alcohols to ketenes. OH N-H CrO3CI CH:CH2CH2CH2 CH:CH-CH2CH 二> Chapter 11 CH3CH2CH2 C H H Br O H H Chapter 11 7 Oxidation of 1° Alcohols • 1° alcohol to aldehyde to carboxylic acid • Difficult to stop at aldehyde • Use pyridinium chlorochromate (PCC) to limit the oxidation. • PCC can also be used to oxidize 2° alcohols to ketones. CH3CH2CH2CH2 OH N H CrO3Cl CH3CH2CH2CH O =>