Aldol Synthesis of Dibenzalacetone

The goal of this experiment was to synthesize dibenzalacet ane by aldehyde-alcohol synthesis. The call down ?Aldol synthesis? was taken from the wrangling ?aldehyde and alcohol?. This is because the return of this reply contains both an aldehyde and alcohol. The carbon-carbon bond-forming fight downion is referred to as aldol addition. An aldol condensation numbers many species of products if the reactant is more than one. Therefore, the aldehyde has to react with itself to yield one product. Procedure: Followed according to the lab manual. Results:DataValueWeight of complete(a) vitreous silica1.6 gWeight of recrystallization crystal0.48 gColor of crystalOrange-yellow% recovery of recrystallization:(0.48 g)/(1.6 g) × nose postdy %=30%Theoretical yield (from prelab): 1.177 gPercent yield(0.48 g)/(1.177 g) ×100 %=40.78%?ConclusionThrough this experiment, aldehyde reacts with itself in the figurehead of acetone and base, NaOH. Acetone is ease up as the enolate forming c ompound, adding to the benzaldehyde followed by the evaporation to form a benzal group. As for the low yield (40.78%), it keister be attri excepted to a a couple of(prenominal) factors. The first being that this reaction goes by an equilibrium and that if this was non shifted far enough to the dibenzalacetone side, the reaction would not go to issue and less yield can be expected.

It might be cause by the solvent use during recrystallization was a little touch more than advised in the lab manual (~15 mL instead of ~12 mL of ethanol). The crystal, (I?m horrified if) it would be solved beyond recrystallizing at this point; but it recrysta llized as it cools down, so I was sure that ! the solvent used was not too much. The crystal was also wasted in the Erlenmeyer flask and some on the filter paper used to dry it. IR analysisThe IR result from this experiment shows no significant stretches infrequency higher(prenominal) than 2000 cm-1 except for a trough at 3052.68 cm-1 that... If you want to describe a full essay, order it on our website: BestEssayCheap.com

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