IUPAC naming for organic chemistry?
I am a little stuck on how to name a certain cyclo alkane.
(cyclopenatane)
/ ^ \_ CH(CH3)2
\ _/
I understand that I don't have to say 1-cyclo and that it would be just cyclo.
I have to draw it out in order to see it. I had named it cycloproylpentane, but was thinking how would I indicate that the ring is connected to the second carbon on propane using the IUPAC naming system?
Answer:
Yes, it is isopropylcyclopentane. Or you could write 1-isopropylcyclopentane if you want to be REALLY accurate.
The reason why it is called an ISO is because it is not really the STRUCTURE of your propyl group. The propyl group should just be a STRAIGHT chain of 3 carbons. But in this case, the CARBON on the CYCLOPENTANE RING is attached to the SECOND CARBON of your propyl group, and not in the FIRST CARBON of the propyl group. Having said that, it makes a sort-of "Y" figure not the straight chain. That's why it's called an ISOpropyl. It's because ISOpropyl is an ISOMER of the propyl group.
Here's a hint: Whenever you see a substituent (an attachment) in a structure that has sort of a "Y" in the end of it's drawing, we name it with the ISO.
Here, I've uploaded a short information about this on the net, so as to explain further... I also included a short exercise for you. =)
http://img.photobucket.com/albums/v495/j...
I hope I helped you out! =)
It's isopropylcyclopentane. The ring is the core. The isopropyl group is a sidechain.
You don't need to number the sidechain if you only have one substituent. If you have multiple, it would be something like
2-bromo-1-isopropyl cyclopentane
See link for Isopropyl. n-propyl or just propyl is a straight chain CH3CH2CH2-, Isopropyl indicates a branched chain.
Any basic organic text should show nomenclature for alkyl chains.
Its name should be 2-cyclopentyl propane.
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(cyclopenatane)
/ ^ \_ CH(CH3)2
\ _/
I understand that I don't have to say 1-cyclo and that it would be just cyclo.
I have to draw it out in order to see it. I had named it cycloproylpentane, but was thinking how would I indicate that the ring is connected to the second carbon on propane using the IUPAC naming system?
Answer:
Yes, it is isopropylcyclopentane. Or you could write 1-isopropylcyclopentane if you want to be REALLY accurate.
The reason why it is called an ISO is because it is not really the STRUCTURE of your propyl group. The propyl group should just be a STRAIGHT chain of 3 carbons. But in this case, the CARBON on the CYCLOPENTANE RING is attached to the SECOND CARBON of your propyl group, and not in the FIRST CARBON of the propyl group. Having said that, it makes a sort-of "Y" figure not the straight chain. That's why it's called an ISOpropyl. It's because ISOpropyl is an ISOMER of the propyl group.
Here's a hint: Whenever you see a substituent (an attachment) in a structure that has sort of a "Y" in the end of it's drawing, we name it with the ISO.
Here, I've uploaded a short information about this on the net, so as to explain further... I also included a short exercise for you. =)
http://img.photobucket.com/albums/v495/j...
I hope I helped you out! =)
It's isopropylcyclopentane. The ring is the core. The isopropyl group is a sidechain.
You don't need to number the sidechain if you only have one substituent. If you have multiple, it would be something like
2-bromo-1-isopropyl cyclopentane
See link for Isopropyl. n-propyl or just propyl is a straight chain CH3CH2CH2-, Isopropyl indicates a branched chain.
Any basic organic text should show nomenclature for alkyl chains.
Its name should be 2-cyclopentyl propane.
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