Chemical Forums

Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: alexboi on May 21, 2020, 04:07:39 PM

Title: Directing group, ortho and para
Post by: alexboi on May 21, 2020, 04:07:39 PM

So alkyl, amine, alcohol groups and others are ortho/para directing groups on benzene because of the possible ressonance structures of the carbocation structures, as i understand it. However I don't see how to determine wether under the specific circumstances, the substituent will be mostly para or ortho. I guess ortho is the must obvious as it has two possible atoms too substitute on vs. only one para atom, but this dosen't always seem to be the case?
maybe somebody has a link to a place with info about the exact location of the substitution group, in para/ortho directing cases?:)

Title: Re: Directing group, ortho and para
Post by: chenbeier on May 21, 2020, 04:16:06 PM

Many influences, read here

https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Map%3A_Organic_Chemistry_(Vollhardt_and_Schore)/16%3A_Electrophilic_Attack_on_Derivatives_of_Benzene%3A_Substituents_Control_Regioselectivity/16.3%3A_Directing__Effects__of_Substituents_in_Conjugation__with_the_Benzene__Ring