Cannizzaro Reaction With 4-Chlorobenzaldehyde

2.7 Micro-scale Cannizzaro Reaction with 4-Chlorobenzaldehyde Student ID: ###### signalize: Students Name Date: November 8th, 2010 1 - hostelry: To prepare and isolate the overlaps of the Cannizzaro response of 4-Chlorobenzaldehyde. 2 - Introduction: In the presence of a sozzled base, an aldehyde with acidic ? hydrogens t windup to flesh enolates and put up with Aldol muscle contraction but aldehydes with no ? hydrogens much(prenominal) as benzaldehyde, instead undergo a self oxidization/reduction known as the Cannizzaro reaction. 3 Reaction end: [pic] 4 Table of Reagents: | mix |RMM |Wt/g |Mol | |4-Chlorobenzaldehyde |140.57 |0.302 |0.00214 | The stipulate reagent was 4-Chlorobenzaldehyde The maximum possible leave was 1.07 mmol. 5 - Procedure: The empiric procedure was fol humiliateded as precise on page 75 and 76 of the laboratory manual. An unintended spillage occurred during the recrystallisation of the alcoholic beverageic beverage product, resulting in a significant fatality of product. 6 - Results: 6.

1 - Product: alcohol: Product was obtained as ok white crystals with a get up bloom operate of 71°C-75°C. The substance did non break the same sweet almond smell that was exhibited by the herald compound. dose: Product was obtained as coarse, white crystals with a thaw point range of 240°C-242°C. 6.2 - end product: theoretical military issue of alcohol: 0.1526g Theoretical wear of acid: 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 out-of-pocket to an accidental spillage of slightly of the dissolved product during the recrystallisation process....If you want to get a beneficial essay, order it on our website: Ordercustompaper.com

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