Questions tagged [halogenation]
For reactions involving the formation of a C-X bond.
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Di-alpha-halogenation of ketones in acidic medium
I was studying alpha-halogenation of ketones on LibreTexts Chemistry
It also says (look at the highlighted text):
Why can't we just reprotonate the monohalogen in the same way as the initial ketone ...
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0answers
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Does acetophenone show haloform reaction?
Although acetophenone is a methyl ketone, as it is aromatic, it is immiscible in H2O so the last step in the haloform reaction should not occur?
I couldn't find any source regarding the haloform ...
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Pyridinium Tribromide and Acetic acid
When brominating trans-stilbene with pyridinium tribromide, acetic acid is required. What purpose does acetic acid serve in the reaction? Shouldn't the tribromide be sufficient?
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209 views
What happens when HCl is added to acetylene in presence of mercuric ions?
Normal addition of Hydrochloric Acid to acetylene would give me a 1,1 Dichloro product.
But I read that in presence of mercuric ions only one molecule of HCl is added to give Vinyl Chloride.
Why does ...
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1answer
42 views
Reaction between phenylamine and halogens
I understand that phenylamine is considerably more reactive than benzene, meaning that it is able to react with bromine water to give 2,3,6-tribromophenylamine. But I was then wondering why I haven't ...
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1answer
130 views
Mechanism with hypohalite in haloform reaction
The haloform reaction is usually done in a solution of NaOH and $\ce{I2}$ (or indeed, any halogen). Now the first part of the reaction mechanism in the wikipedia page and in the most organic books ...
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2answers
64 views
Finding major product when bromonium compound is acted upon by a nucleophile
The original question is:-
The major product obtained in the following conversion is:-
(Note that Me here means methyl group)
The initial step would be the formation of a bromonium ...
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1answer
282 views
Which will be the major monochlorination product? [closed]
Which of these compounds represents the major monochlorination isomer formed in the following reaction?
According to selectivity theory, the answer should be (c). However, the given answer is (...
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1answer
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What is the rate-determining step in free radical halogenation?
Recently, we were learning about free radical halogenation in school. A set of notes given to us wrote that the rate-determining step is the propagation step. This seems to go against my understanding ...
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Why is free radical chlorination exothermic whereas bromination is endothermic?
In the energy profile diagrams below, it can be clearly seen that the free radical chlorination of an alkane
$$\ce{RH + Cl2 -> RCl + HCl}$$
is exothermic. However, the corresponding bromination
$...
4
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1answer
137 views
Does the Lewis acid have to match the halogen in electrophilic halogenation of benzene
$\ce{FeBr3}$ catalyzes bromination and $\ce{AlCl3}$ chlorination. I'd like to know whether bromination and chlorination can be done in sequence without changing the catalyst? So - will using the $\ce{...
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Products of radical bromination and mechanism
My organic chemistry final is next Tuesday, and I have worked through the practice final. The last question is the following: Give and name all the compounds resulting from the radical monobromination ...
