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Unformatted text preview: disproportionation redox reaction could have also occurred, where the compounds could have been reduced to alcohols, and this could be seen by an IR spectra. 3. In this lab, we transformed p-anisalaldehyde into trans-p-anisalacetophenone and then collected the product through vacuum filtration and recrystallization. We had a few key errors, however, which caused our yield to only be 23.7%. One was that the vacuum filtration efficiently separate the product from the solution, as it went through the filter paper fairly easily, so we had to perform it multiple times. Despite this deficiency, I do believe we were successful, as the TLC plate and the matching melting points mean that our product was very pure, although not much was collected. 7. The coupling constant for peaks D and G are 15.6 Hz, which corresponds to the 11-19 Hz range that trans alkene products occur, so this is the evidence. The H beta is less shielded so it has a larger chemical shift and is farther upstream....
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- Spring '08