Aldol Synthesis of Dibenzalacetone

The goal of this experiment was to combine dibenzalacet ane by aldol synthesis. The call down ?aldehyde-alcohol synthesis? was taken from the speech communication ?aldehyde and alcohol?. This is because the return of this tell contains both an aldehyde and alcohol. The carbon-carbon bond-forming matchion is referred to as aldol addition. An aldol ejection seat births many species of products if the reactant is more than one. Therefore, the aldehyde has to react with itself to yield one product. office: Followed according to the lab manual. Results:DataValueWeight of approximative vitreous silica1.6 gWeight of re crystallization crystal0.48 gColor of crystalOrange-yellow% recovery of recrystallization:(0.48 g)/(1.6 g) × intrude 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 front line of acetone and base, NaOH. Acetone is have as the enolate forming compound, adding to the benzaldehyde followed by the vapor to form a benzal group. As for the low yield (40.78%), it behind be attrisolelyed to a a few(prenominal) factors. The first being that this chemical reaction goes by an equilibrium and that if this was non shifted far enough to the dibenzalacetone side, the reaction would not go to pass completion and less yield basin be expected.

It might be ca employ by the solvent utilize during recrystallization was a little routine more than advised in the lab manual (~15 mL instead of ~12 mL of ethanol). The crystal, (I?m hangdog if) it would be solved beyond recrystallizing at this point; but it recrystallized as it cools down, so I was sure that the solvent utilise 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 that for a trough at 3052.68 cm-1 that... If you want to describe a full essay, order it on our website: Orderessay

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