Cannizzaro Reaction With 4-Chlorobenzaldehyde

2.7 Micro-scale Cannizzaro chemical reaction with 4-Chlorobenzaldehyde Student ID: ###### Name: Students Name Date: November 8th, 2010 1 - order: To prepare and isolate the overlaps of the Cannizzaro reaction of 4-Chlorobenzaldehyde. 2 - access: In the presence of a strong base, an aldehyde with acridic ? hydrogens function to soma enolates and undergo Aldol condensation but aldehydes with no ? hydrogens such as benzaldehyde, instead undergo a ego oxidisation/reduction known as the Cannizzaro reaction. 3 Reaction end: [pic] 4 Table of Reagents: |Compound |RMM |Wt/g | mol | |4-Chlorobenzaldehyde |140.57 |0.302 |0.00214 | The restrict reage nt was 4-Chlorobenzaldehyde The maximum possible yield was 1.07 mmol. 5 - physical process: The data-based procedure was followed as detailed on rapscallion 75 and 76 of the laboratory manual. An accidental spillage occurred during the recrystallisation of the alcohol crop, resulting in a significant loss of product. 6 - Results: 6.

1 - Product: alcohol: Product was obtained as fine exsanguinous crystals with a break up bloom range of 71°C-75°C. The substance did not break the same almond tone of voice that was exhibited by the precursor compound. dose: Product was obtained as coarse, smock crystals with a melting point range of! 240°C-242°C. 6.2 - end product: theoretical yield of alcohol: 0.1526g Theoretical yield of point: 0.1668g |Compound |RMM |Wt/g |Mol |% Yield | |4-chlorobenzyl alcohol |142.58 |0.05 |0.00036 |32.77 | |4-chlorobenzoic acid |156.57 |0.1259 |0.000804 |75.48 | Discussion: The low yield of the alcohol was due to an accidental spillage of some of the dissolved product during the recrystallisation process....If you want to quiver a full essay, order it on our website: BestEssayCheap.com

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