In the organic lab 2 exp preparation of benzoin benzil and...

In the organic lab 2 (exp: preparation of benzoin, benzil, and benzilic acid): 1. What kind of reaction might take place if acetaldehyde was used in place of benzaldehyde in the benzoin condensation? 2. Write an equation for the reaction of benzil hydroxylamine. 3. How was the unreacted benzil removed from benzilic acid?

Transcript

0:00 Hello.

00:02 So in this question it is asking about the condensation process.

00:08 So see the first is a benzoin condensation that means when benzaldehyde benzoin condensation means to condense together.

00:22 So in this when benzodia hide, two molecules of benzodiaide they condensed together.

00:33 In the presence of the acid -based catal.

00:36 So it forms benzoin, that is two molecules of benzaldehyde, they attach together and they form benzoin, double bond o and noh.

00:54 This is benzoin.

00:57 So if we replace this benzodiaide with the acetaldehyde, that is the molecular structure.

01:06 Of this acetyldehyde is this.

01:10 So the two molecules of acetyldehyde they come together and get condensed with each other and oh negative get reduced.

01:22 So here the final molecule that is produced it is h is there and ch3 is there.

01:34 So this is the alpha and this is the beta carbon.

01:37 This is the 3 -hydroxy butanol.

01:40 That is l -dhyde plus alcohol it is there.

01:46 L -dehyde plus alcohol and this is called as the aldol.

01:54 So here we can say that if we replace this benzaldehyde with the acetalde, so again the aldol condensation will take place.

02:06 The reaction would be the l -dol.

02:09 Condensation.

02:16 I hope this reaction, this point is clear to you.

02:23 See by using the acid base extraction extraction this benzene was removed from the mixture.

02:38 This benzene it can be removed from mixture...

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