L05 write-up - Crossed Aldol Condensation

L05 write-up - Crossed Aldol Condensation - The Crossed...

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The Crossed Aldol Condensation Lab Introduction In this lab, I performed a crossed-aldol condensation reaction between acetone and the aldehyde, cinnamaldehyde. Three unlabeled aldehydes were provided, and I chose just one of them to use in my reaction. Then I compared the properties of the three predicted products of the different aldehydes to the properties of the one I yielded from my experiment to identify which aldehyde I had started with. Discussion Identifying which aldehyde I used was fairly easy because the melting point of its product was above the melting points of the other two possible products from the other aldehydes. The crossed-aldol condensation of benzaldehyde and p-anisaldehyde result in products with melting points no higher than 131˚C, and the product of my reaction had a melting point range of 135- 141˚C, which eliminates the possibility that I used either of the other two (p. 4, bottom). The geometry of the product can be predicted through analysis of the steric interactions
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This note was uploaded on 10/07/2010 for the course CHEM 3BL taught by Professor Chunmei during the Fall '08 term at University of California, Berkeley.

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L05 write-up - Crossed Aldol Condensation - The Crossed...

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