Chromium Oxidation of Alcohols / Aldehydes

What you need to know:

R2HC OH R2C OH2SO4 NaCr2O7

R2C H R2HC OH + HCrO4- R2C O OCrO3H

HCrO3

Mechanism written slightly differently according to various sources. You are NOT responsible for details, but FYI:

OH O OHH+

Cr2O72- + H2O Cr Cr O O O O

O

O O O O Cr

Cr O OHHO OH H

Alternate Mechanism: OHO O

Cr H+ O Cr O O O OH +H2OHO OH Cr O

H O OH

H+

O

Cr HO OH