Oxidative cleavages can help to determine
the positions of the t...

Question

Oxidative cleavages can help to determine the positions of the triple bonds in alkynes. (b) An unknown alkyne undergoes oxidative cleavage to give the following triacid plus one equivalent of propionic acid. Propose a structure for the alkyne. <
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Accepted Answer

Hey everyone and welcome back into this video, We are going to solve the following problem. The position of triple bonds and AL kinds can be determined through oxidative cleavage is an unknown AL kind gives though decade DEO Cassidy has shown below proposed the structure of this alkaline. As given in this problem, an unknown AL Kind undergoes those analysis. If you look at this reaction, this is an oz analysis reaction and an alkaline which must have a triple bond, right, We may have a general case of R. C. C. R. If it's an internal alkaline produces an asset and notice that there are two public selic acid groups here. So that's really important. Let's think about the general reaction of what happens whenever we are performing an arsenal. Is this reaction on an AL kind which has an alcohol supposition on one end and hydrogen on the other one. So that would be our terminal AL kind. When we're performing an oxidative cleavage were essentially breaking the carbon carbon triple bond and we are forming two products. Of course we need to use number 10zone number to die muscle sulfide in the presence of water. Now from the left part, we get our assets so that we want to three carbon atoms. Right? So we are going to add 123. That would be our car book silic acid. That's what we're forming from the left side and from the right side because it was a terminal alcott and we're forming C. 02. That's number one, that's number two because we don't have any carbon dioxide. We understand several facts. # one. It must be an internal AL kind. Number two. We also don't see any other products than one asset which contains two car bookseller catholic groups. Right? So it must be a cyclic structure, meaning it must be a ring. This definitely makes sense. Right. If it was a symmetrical internal al Qaeda and we would just get equivalent assets and we would just have some coefficient over here. But we have 1 to 1 ratio doesn't stay that. We have more than one mole of the assets formed. And in addition to that, we see that the two car books delicacy groups were formed meaning they belong to the cyclic structure. And that would be yet we pretty much understand everything that is happening. So we simply want to draw a cyclic structure. That is an internal alkaline which has a total of how many carbon atoms. So that's some from here. Plus two more. That's 12. Right. So we understand that statement. Number three would correspond to 12 carbon atoms. So our goal is to draw An alkaline with which is a cyclic structure with 12 carbon atoms. Let's see that essentially we're going to draw our carbon carbon triple bond first. Let's label them that be carbon number one and number two, we're going to extend it. Carbon number three, four and we need eight more carbon atoms. So let's see that. Okay, so let's see if we got 12. That would be 1234, 5, 6, 7, 8, 9, 10, 11, 12. Yeah, that works for us. So we got our structure and we can think if this is exactly what we're expected to get. If our assumption was correct, what if we break this triple bond? Indeed, we will get a total of 12 carbon atoms and positions number one and two. They will have car books, Delicacies, group. Car books tell Cassidy groups. Right? So it makes total sense. That's why we're getting just one mole of the product, because it must be psychic structure. So we may label this is our final answer to this problem and conclude that the correct answer to this multiple choice question is B. However, if you have any questions, don't have States, leave your comment down below in the comment section and thank you for watching.

Oxidative cleavages can help to determine the positions of the triple bonds in alkynes. (b) An unknown alkyne undergoes oxidative cleavage to give the following triacid plus one equivalent of propionic acid. Propose a structure for the alkyne. < of reaction>

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Oxidative cleavages can help to determine the positions of the triple bonds in alkynes. (b) An unknown alkyne undergoes oxidative cleavage to give the following triacid plus one equivalent of propionic acid. Propose a structure for the alkyne. <
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