Is it 2
Nope Answer is given as 1 But how ?
Whats your logic for 2 ?
It's 2 , the options are jumbled up imo, somebody had asked this before and then they said answer was 2 only
For 2, E1cb type reaction,
Carbonion stabilised by resonance
But won't the carbanion on double bond be unstable ?
Also how E1cb Br is a good leaving group ?
Now even though carbonion on double bond is unstable it is our most appropriate choice here
And I didn't get your Doubt about why it isn't E1cb
The requirement for E1CB mechanism to take place is that there should be a poor leaving group
Here Br is not a good leaving group due to unstable vinylic carbocation
Okay got it thanks bro !
Yeah I don't see why not both
Which book though ? Cuz if it's HP or MSC may be some hidden concept
Previous year coaching test paper
Answer given is C only that too in multiple correct
@Anish_Saparia @Anindya_Sikdar @Viraam_Rao
Even I think both B and C can show E2 mechanism.
Yup getting the same answer it shld be b n c both
There is also one another condition i.e in presence of acidic hydrogem
Both b and c ..but order will be: c ) b