Crossed Aldol Condensation

Crossed Aldol Condensation - Zaza Atanelov July 6, 2010 Lab...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Zaza Atanelov July 6, 2010 Lab #23: The Crossed-Aldol Condensation Introduction: In this lab we perform a Crossed-Aldol Condensation reaction between acetone and one of three aldehydes: benzaldehyde, p-anisaldehyde, or cinnamaldehyde. Using sodium hydroxide as the base reagent, a crude product and a following recrystallized product were isolated. The performed aldol-condensation reaction is important because it demonstrates how NaOH can be used to induce a reaction between aldehyde and a ketone, through which water is ultimately condensed by a hydroxy ion leaving group. Furthermore, it is important to recognize that because we have enough base and aldehyde the reaction proceeds through two aldol- condensations, not one. The lab allows us to determine if our crude and recrystallized products confirm our predictions of the identities of either X, Y, or Z from analysis of the NMR spectra. Discussion: There were 3 possible starting aldehydes (X, Y, and Z) from which a group could have started with. In determining my unknown aldehyde, X, the first thing I did was analyze the NMR of the products. I predicted initially that each product was the result of two aldol- condensations. It is also important to note that the number of hydrogens and carbons described by the NMR account for only half of the total amount of each. Looking at the
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Crossed Aldol Condensation - Zaza Atanelov July 6, 2010 Lab...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online