Taylor Collins 10

Taylor Collins 10 - Taylor Collins Aldol Condensation Using...

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Taylor Collins Aldol Condensation Using an Unknown Aldehyde and an Unknown Ketone Pre-Lab and Observations : Attached Results : Code Numbers: Y001A: B002K: Aldol Product: Y-B Label: Taylor Collins 2,5-Dibenzylidenecylcopentanone Melting Point: 184 C- 189C Weight: 1.95 grams Benzaldehyde + Cyclopentanone + -OH condensed product + H2O Theoretical Yield: 1.447 Product: Weight Crude- 4.94 grams Weight Recrystallized- 1.95 grams Yield- 1.95/ 1.447 * 100= 135% Melting Point- 184 C to 189 C
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Spectra: Attached Text Summary: I found my benzaldehyde and cyclopentanone IR spectra online because they were not apart of the Y-B folder. The aldehyde IR spectra showed the carbonyl stretch at around 1700 cm also the C-H bonds from the benzyl showed stretching around 2800- 2900 cm. The cyclopentanone IR spectra showed a carbonyl stretch around 1750 cm and alkane stretching around 2900 to 3000 cm. The product spectra shows a singlet around 3 ppm representing the hydrogens of the cyclopentanone. The alkene protons are shown by a triplet around 7.37 ppm.
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This note was uploaded on 04/19/2010 for the course CH 237 taught by Professor Staff during the Spring '08 term at Alabama.

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Taylor Collins 10 - Taylor Collins Aldol Condensation Using...

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