Report questions 2 points each 1 which of the two isomers is...

Report Questions (2 points each) (1) Which of the two isomers is the major product? How did you determine that? What is the ratio of the two products? (2) What is the function of the sodium hydroxide wash of the alkene product? (3) Why is the distilled product cooled down in an ice bath? (4) What mechanistic pathway does the reaction follow? (you do not have to show the mechanism) (5) Could this reaction be run with less than 3 mL of sulfuric acid? Please explain your answer. (6) Why is the product distilled off?

Transcript

00:01 To identify the isomers, so identify isomers, gcs is used, that is a hyphenated technique of gas chromatography and mass spectroscopy or you can say mass spectrometry and they are coming in different rf values.

00:16 So they have different rf value from the gc.

00:23 Rf values.

00:26 But have same mass.

00:26 Sometimes we separate by tlc method but sometimes enchantumas we cannot separate.

00:30 So, tlc can be used sometimes, can be used sometimes, but not always.

00:40 Therefore, it is always preferable to use gcs in this case, but current condition we can separate.

00:45 So what will happen? no alkyne product is not formed equal amount as they found by carbocatin intermediate.

00:50 So in this case, the mechanism involved would be h2so4 is there.

00:54 So this can break as h plus hso4 minus.

01:00 And when we have h3po4, this can break as h plus plus h2po4 minus.

01:09 These are the two acids form and the dissociation of these two acids.

01:14 So what will happen if i have the alcohol molecule in this manner.

01:21 So addition of h plus, this is only this one.

01:25 So addition of h plus, this will protonate this and becomes oh2 positive and this will be this kind of structure which we will be going to have.

01:36 Now what can happen is there are two possible ways that is minus h2 in this manner, minus h2 in another form...

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