The objective of the experiment was to reduce Benzil, using sodium borohyride as the reducing agent. In a benzil reduction, there are five possible products than can occur, specifically a racemic mixture of benzoin, racemic mixture of hydrobenzoin, or meso-hydrobenzoin. Therefore, three different tests were conducted in determining the identity of the product: melting point, thin light chromatography, and infrared spectroscopy. (a) Mechanism and reaction equation of benzyl reduction
Stereochemistry plays a vital role in the five possible products of benzil reduction. The five possible products in the reduction of benzil are due to the two carbonyl groups in benzil. If the sodium borohydride reduced …show more content…
Possible identity of product based on IR
-the IR indicates absence or presence of functional groups. Therefore, it shows how many carbonyl groups were reduced by indicating the number of OH peaks.
Possible identity of product based on TLC
Thin light chromatography helps identify unknown products using polarity. Since the silica gel is polar, the solute that is very polar will stick more to the plate than a solute that is not as polar which allows the developing solvent to carry it as it travels up the plate. In the plate containing the racemic standard, all three spots traveled different distances by which the spot that contained