Identify the indicated functional groups in the following mole...

Question

Identify the indicated functional groups in the following molecules:

b. Thienamycin, an antibiotic

Chemical structure of thienamycin with highlighted functional groups including hydroxyl, amine, and sulfonyl groups.

Accepted Answer

All right. Hi, everyone. So this question is asking us what are the functional groups present in the molecule shown below? Here, we have the structure of seine with four different functional groups highlighted in purple. Option A says one carboxylic acid, two amide three sulfide four amine. Option B says one carboxylic acid to amine three thiol for amide. Option C says one ether two amide, three sulfide, four amine and option D says one ester two amine three thiol four amide. Now recall it a functional group of a given molecule is a part of that molecule that has a distinct structure and therefore behaves in certain ways. Right now, every functional group that we know of can be represented by a so called generic formula depending on how it looks. So let's consider number one here. And for number one, I want to draw your attention to this carbon atom that we have in the Senate because notice how this carbon atom has a double bond to one oxygen as well as a single bond to the other oxygen. And in addition to this right, this carbon in the center is connected to another one on the other side. So a carbon atom in the center is connected to another one, which can be abbreviated as part of an art group or groups can refer to either hydrogen, an ocho group or an aero group. And this carbon in the center is also connected to two oxygens, one of which has a hydrogen attached. So the functional group labeled one can be abbreviated as R coo H which if you recall is characteristic of a carboxylic acid. So number one here would be a carboxylic acid. Now, number two looks very similar, right? Particularly because we have a very similar structure because we also have a car bal, right. So in the center of the box, for functional group two, we have a carbon that is double bonded to an oxygen atom. However, unlike the carboxylic acid, the carbon in the center for number two is connected to a nitrogen via a single bond instead of another oxygen. So this means that the structure itself is going to be different, right? Instead of abbreviating this functional group as R coo H, we would abbreviate this as RCON but the nitrogen is connected to two other R groups aside from the carbon that's double bonded to oxygen. Now to reiterate, right, the R group can be either an alko group, an aero group or it can simply be hydrogen. So based on the description here, the functional group labeled two is going to be an aide. So very similar in appearance to the carboxylic acid, but we have a nitrogen instead of a second oxygen. Now, number three, here, number three represents or is represented by one sulfur atom in between two carbon atoms and there's a single bond between sulfur and each carbon atom. Now here recall that these carbon atoms can be abbreviated by simply R right? So there are two R groups on either side of this sulfur atom for number three. So recall that when sulfur or when an atom of sulfur is in between two carbon atoms, this is going to be a sulfide. So number three, here is a sulfide. And lastly, we have number four. Now, number four involves nitrogen and nitrogen is in fact connected to a carbon. However, unlike the amide in part two, the carbon that is connecting the nitrogen in functional group four does not actually contain a double bond to an oxygen. So the functional group four can be represented as simply R NH two. But more generally speaking, we would describe it as our and R two because R can be hydrogen in addition to all or aero groups. So because the functional group four is very similar in appearance to the amide, it also has a very similar sounding name, specifically functional group four is an amine. So there you have it. So now we've identified all four functional groups. And if I scroll down to the answer choices, our answer is going to be option eight because number one was a carboxylic acid. Number two was an amide three was a sulfide and four was an amine. So with that being said, thank you so very much for watching and I hope you found this helpful.

Identify the indicated functional groups in the following molecules:
b. Thienamycin, an antibiotic

Key Concepts

Functional Groups

Thienamycin Structure

Antibiotic Mechanism of Action

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