Organic chem doubt from hydrocarbon/ alkyl halide

Shouldnt there be a 3rd case as well in which H radical is removed from the left most carbon (1st carbon acc. to IUPAC naming)
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@Dexter
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Opt
Opt2w ago
The two carbons connected to the double bonded carbon are identical.
Fusion
FusionOP2w ago
How Theres a methyl group attached so the numbering of both the carbons is different
Opt
Opt2w ago
No?
hardcoreisdead
shouldnt third nd fourth case be the resonance strucs of the two given compounds
Fusion
FusionOP2w ago
Oh alright i get it
Opt
Opt2w ago
This is allylic bromination. Substitution takes place before resonance can occur.
Fusion
FusionOP2w ago
Thank you for pointing it out. I do fail to see the obvious sometimes
Opt
Opt2w ago
Dw it happens to everyone. @hardcoreisdead Free radicals generally do not undergo rearrangement/resonance structure change since they're too unstable to stay for very long. Reactions occur almost instantaneously
hardcoreisdead
hamare sir ne toh karaya tha par
Opt
Opt2w ago
It can happen, but your product mixture is going to have a very tiny amount of the resonance structure product. Negligible amounts. I reckon it can happen in cases where you have an extremely stable free radical that also has resonance. Which you're basically never going to come across
hardcoreisdead
3 deg free radicals ??
Opt
Opt2w ago
Benzyl 3° might have such a case. Look up a paper and check the values lol Like free radical bromination of cumene or something ig. Can't judge without the numbers.
hardcoreisdead
exam mein kaise pata chalega lol
Opt
Opt2w ago
They can't ask unless its obvious to a high schooler
hardcoreisdead
hmm point
Fusion
FusionOP2w ago
they wont Ye toh thoda high school chem ke realm se bahar ho jayega
Nimboi
Nimboi2w ago
solved?
Fusion
FusionOP2w ago
Yup +solved +solved @Opt
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