happyana

10+ Year Member
Aug 31, 2007
140
0
Status
Other Health Professions Student
anyone know why A isn't the answer for #44? why wouldn't the reactivity of the halogens be taken into consideration? isn't I a weak base since it's conjugated acid is really strong, so that would make for a better leaving group?
 

Sublimation

10+ Year Member
5+ Year Member
Jun 14, 2008
574
0
Status
Pre-Dental
anyone know why A isn't the answer for #44? why wouldn't the reactivity of the halogens be taken into consideration? isn't I a weak base since it's conjugated acid is really strong, so that would make for a better leaving group?
I dont have destroyer, if you could post the question i could be of more help.
 

drillbit

10+ Year Member
Oct 1, 2008
78
0
Status
Pre-Dental
E is aromatic -the electron density is delocalized - which means it is more stable! The more stable the carbocation - the faster it reacts. I is a better leaving group, but you always have to take into account the structure of the compound. Cl is a good leaving group too - so there are no issues with it not allowing the formation of a carbocation.
 
About the Ads

sciencegod

Super Member
10+ Year Member
Nov 20, 2008
198
0
Status
Pre-Dental
anyone know why A isn't the answer for #44? why wouldn't the reactivity of the halogens be taken into consideration? isn't I a weak base since it's conjugated acid is really strong, so that would make for a better leaving group?
that's like saying why does a methyl iodide not react faster than a t-butyl chloride. you gotta form the stablest carbonium ion. making the thing aromatic kicks the butt off I being a better leaving group. hope that hlps.
 

Panther85

10+ Year Member
Aug 20, 2007
99
1
Status
Podiatry Student
E is aromatic -the electron density is delocalized - which means it is more stable! The more stable the carbocation - the faster it reacts. I is a better leaving group, but you always have to take into account the structure of the compound. Cl is a good leaving group too - so there are no issues with it not allowing the formation of a carbocation.
u pretty much nailed it. the aromaticity once the Cl leaves is the best carbocation structure.
 

sciencegod

Super Member
10+ Year Member
Nov 20, 2008
198
0
Status
Pre-Dental
what's wrong with what I said.
 
About the Ads