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Naming Acid Anhydrides and Nitriles - IUPAC Nomenclature



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in this video we're going to talk about

how to name acid anhydride and nitriles

as well so let's start with a basic

example what is the name of this acid

anhydride so this particular anhydride

is symmetrical we have two carbons on

both sides now whenever you have a two

carbon chain needs a thing of the word

ethane but in this case when dealing

with and hydrides take off the e and add

awake

so this is called ethanoic anhydride the

common name for this molecule is acetic

anhydride acetic is o so it's always

associated with two carbons now let's

move on to our next example based on the

last example go ahead and name this acid

anhydride so we have another symmetrical

and hydride and they have three carbons

on each side so three carbons is

associated with the word propane but

we're going to take off the E and

replace it with oeq so this is called

propanoic and hydride

now let's work on some examples where we

have an unsymmetrical and hydride so

let's start with this example how can we

name it so on the left side there's two

carbons so that's going to be associated

with the word ethanoic and then on the

right side there's a total of 3 carbons

which will be associated with propanoic

and it's already in alphabetical order

so we could say it's ethanoic propanoic

and hydride let's try one more example

like that

try this one so on the left side we have

two carbons that's gonna be ethanoic and

on the right side we have only one

carbon so think of methane but it's

gonna be methanoic and then anhydride

and it's already in alphabetical order

so that's how you can name unsymmetrical

and hydrates now let's talk about how we

can name night rouse let's start with

this example what is the name of that

nitro so this is carbon one this is

carbon two so this is called ethane and

nitro now what about this one

feel free to pause the video and name

that nitro so this is carbon one two

three four so four carbons is associated

with the word butane and so this is

going to be called butane nitro let's

work on this example

so let's put a methyl group on his

carbon how can we name that molecule so

this is carbon one two three four five

six seven so a seven carbon chain will

be heptane and we have the nitrile

functional group so this is heptane

nitrile and then there's a methyl group

on carbon 4 so it's 4 - methyl heptane

nitro now let's work on this example so

let's say if we have a bromine atom and

a methyl group go ahead and name this

molecule so we have a total of 8 carbons

so this is going to be called octane

nitro on carbon 3 we have a bromine atom

and on carbon 4 we have a methyl group

so B comes before M therefore this is

going to be 3 bromo - four - methyl

octane nitro and so that's it for that

example now what if we have a benzene

ring and a nitro functional group what's

the name of this molecule this is simply

called benzyl nitro it's also called

benzene carbon nitro

so those are the ways you can name this

molecule