Naming priority

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Xin Huang 3E
Posts: 40
Joined: Wed Sep 21, 2016 2:57 pm

Naming priority

Postby Xin Huang 3E » Sun Mar 19, 2017 12:42 pm

In 2014 final, Q5 (D) has a naming given "prop-2-en-1-ol" as the answer. However, shouldn't the double bond be given the highest priority to have the lowest order of carbon, before all of the other substituents? I got "prop-1-en-3-ol" for this.

Iris Feng 2I
Posts: 13
Joined: Wed Sep 21, 2016 2:57 pm

Re: Naming priority

Postby Iris Feng 2I » Sun Mar 19, 2017 12:52 pm

The -OH group is a functional group, which is prioritized before double/triple bonds. Substituents like alkyls are even lower priority.

Nikhita_Jaaswal_2H
Posts: 31
Joined: Wed Sep 21, 2016 2:57 pm

Re: Naming priority

Postby Nikhita_Jaaswal_2H » Sun Mar 19, 2017 1:00 pm

Functional groups get higher priority when naming as compared to alkene and alkyne bonds.

Tycho_Meimban_2B
Posts: 31
Joined: Wed Sep 21, 2016 2:57 pm

Re: Naming priority

Postby Tycho_Meimban_2B » Sun Mar 19, 2017 1:47 pm

Functional groups get higher priority than double/triple bonds, which in turn have higher priority that substituents.

Hope this helps!


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