Give the structures of the carbonyl compound and the amine
used ...

Question

Give the structures of the carbonyl compound and the amine used to form the following imines. (a)

(b)

(c)

Accepted Answer

All right. Hi everyone. So for this question we must show um what a means and carbon compounds produced the means listed below. So, before we begin, let's recall that I means are a common intermediate during the synthesis of an amine. Right? And they can form when you react either ammonia or primary amine with an all the hider ketone. So when you put these two things together, you're going to end up with your I mean and I mean look very similar to car bottles. Right? But instead of a C double one, oh, we have a C double bond N. So now um in order to show you guys how we can determine our starting materials. Given an I mean with molecule A here that I went ahead and I redrew in blue. What I like to do for these kinds of questions is I like to just draw a split down the middle of the double bond. Right? Because once um once I do that, it's going to show me what's on either side. Right. One half is going to be our I mean and the other half is going to be our car bottle. So if we look at the top here, at r NH recall that um for the synthesis of an I mean it can either be ammonia or a primary amine. So in order to differentiate between the two, you have to check whether or not your nitrogen is bonded to any carbons besides the carbon of your money. Right? So in that case um here we don't have any additional carbons. So that must mean that we had ammonia as a starting material. So we had ammonia as our starting material. And now if we look on the bottom half of the split, then we have a ketone. Right? Because um the carbon of our I mean is connected to two other carbons. So that means that we have a ketone. So that must be um our answer for part A. Just draw out the method groups really quickly and now we can scroll down to part B. Now part B, Parts B and C. We're going to do the same thing, right? We're gonna just draw a split down the double bond and then we can look at what's on each side to determine the mean and the car bond. So if you look at the amine on the bottom half of the split, it is in fact going to be a primary amine because notice how the nitrogen is connected to a carbon on this five member ring. So this five member ring is what's going to have our primary amine attached to it. And with that being said, if we look at the top half of the split this time, at the carbon of our I mean that carbon in our I mean is bonded to one additional carbon. And we also have an H Here, right, So our carbon is going to be connected to both a method group and a hydrogen indicating that we have in all the hype. So just to recap right, we have the carbon of our I mean bonded to one other carbon. So it must be an al to hide. And now to finish us off for part C. Once again we're gonna do the same thing. We're gonna split it down the middle. But this time it's interesting because we have a ring structure are I mean as part of a ring. So recall that when we have um and I mean as part of a ring structure then that must mean that we had an intra molecular reaction. Right? So we had our primary amine and Carbonneau within the same molecule. Right? Because when they reacted together they formed a ring. So let's go ahead and let's count how many carbons we have here, including the carbon of our I mean, and that's gonna be 12345. So what I'm gonna do is I'm gonna draw our primary amine And I'm going to draw five carbons including the carbonnel. Right? So this is this is our car bottle. And now like we talked about before in part b the carbon of our I mean, mhm is bonded to one additional carbon. So that must mean that we had in all the hype at the end here. So that is going to be it for this question, right? And the main takeaway that I want you to gain from this video is that when trying to figure out the starting materials given. And I mean, I always recommend just drawing to split down the middle of the I mean, so that you can see what's on either side, Right? So hopefully that tip made your life a little bit easier and thank you for watching.

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Give the structures of the carbonyl compound and the amine used to form the following imines. (a)
(b)
(c)