Qer
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#1
Report Thread starter 5 years ago
#1
how to name
CH3CH2CH2CL
can anyone tell me step by step
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Reality Check
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#2
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#2
work out the number of carbon atoms in the skeleton: this will give you the meth/eth/prop/but part.

look at the bonds in the skeleton: are they all singe (alkane) or are there some double (alkene) or triple (alkyne) bonds?

Look at any functional groups and include them in the name, indicating which carbon atom has the function group.

So in your example you've got 3 carbons in the skeleton = prop
No double bonds: propane
Chlorine atom attatched: chloro.. to first carbon, so 1-chloro...

So overall, you've got 1-chloropropane.
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Qer
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#3
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#3
(Original post by Reality Check)
work out the number of carbon atoms in the skeleton: this will give you the meth/eth/prop/but part.

look at the bonds in the skeleton: are they all singe (alkane) or are there some double (alkene) or triple (alkyne) bonds?

Look at any functional groups and include them in the name, indicating which carbon atom has the function group.

So in your example you've got 3 carbons in the skeleton = prop
No double bonds: propane
Chlorine atom attatched: chloro.. to first carbon, so 1-chloro...

So overall, you've got 1-chloropropane.
thanks
can you do this for me
draw structure of methylbytaneone
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will'o'wisp
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#4
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#4
(Original post by Qer)
how to name
CH3CH2CH2CL
can anyone tell me step by step
longest chain of carbons

count functional groups closest to the first carbon
it has 3 carbons so it's got a prop
there's just a cl group on the end of the molecule
so it's propane
then 1-chloropropane
(Original post by Qer)
thanks
can you do this for me
draw structure of methylbytaneone
is that methylbutanone?, still where is the methyl group????
and where is the double bond situated for the ketone bit? you gotta have some numbers man because there's different places where the methyl group and ketone functional group can go
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HeroinMouth
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#5
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#5
(Original post by Qer)
thanks
can you do this for me
draw structure of methylbytaneone
are you sure it's not methylbutanoate? 'Cos I've never heard of that.
Also what structure do you want? Skeletal/Structural etc?
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Qer
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#6
Report Thread starter 5 years ago
#6
(Original post by Mnatalie99)
are you sure it's not methylbutanoate? 'Cos I've never heard of that.
Also what structure do you want? Skeletal/Structural etc?
Yeah i am sure
I want structural formula
This question if from Oxford as chemistry textbook
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Qer
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#7
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#7
(Original post by will'o'wisp)
longest chain of carbons

count functional groups closest to the first carbon
it has 3 carbons so it's got a prop
there's just a cl group on the end of the molecule
so it's propane
then 1-chloropropane

is that methylbutanone?, still where is the methyl group????
and where is the double bond situated for the ketone bit? you gotta have some numbers man because there's different places where the methyl group and ketone functional group can go
Yeah i was also confused with it
because thete is no number
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will'o'wisp
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#8
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#8
(Original post by Qer)
Yeah i was also confused with it
because thete is no number
so is it a butanoate or butanone?
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Pigster
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#9
Report 5 years ago
#9
(Original post by will'o'wisp)
is that methylbutanone?, still where is the methyl group????
and where is the double bond situated for the ketone bit? you gotta have some numbers man because there's different places where the methyl group and ketone functional group can go
Starting with butanone, there is only one carbon that you can attach a methyl group to, without it becoming a pentanone or having a five bonded carbon. There is no need for numbers.
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will'o'wisp
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#10
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#10
(Original post by Pigster)
Starting with butanone, there is only one carbon that you can attach a methyl group to, without it becoming a pentanone or having a five bonded carbon. There is no need for numbers.
o ****

good point, it can only go on the second or third.....
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Pigster
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#11
Report 5 years ago
#11
By convention, the (priority - in this case the only) functional group would get the lowest carbon number, i.e. 2, so the methyl group would take the 3- position, but since they could only be on carbon number 2 and 3 respectively, they are superfluous and therefore omitted.
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