Sodium Borohydride Reduction of Benzil
Raymond Oldham, Michael Lester, Audrey Paulzak
There are several methods to reduce aldehydes and ketones to alcohols.
Both primary and secondary alcohols can be created by using complex metal
hydrides such as lithium aluminum hydride and sodium borohydride, with ketones
reducing to secondary alcohols and aldehydes reducing to primary alcohols. Both
reagents provide an abundant source of H
ions that serve as catalysts for the
Between the two reducing agents, lithium aluminum hydride (LiAlH
extremely strong, expensive, and must be used in aprotic solvents. On the other
hand, sodium borohydride (NaBH
) is inexpensive and can be used in common
solvents such as water and alcohols. Also, all four of the hydrogen atoms can
reduce the ketone or aldehyde
In this experiment, sodium borohydride will be used to reduce diketone
benzil in a quick and efficient manner.
Table of Reagents:
This is the end of the preview. Sign up
access the rest of the document.