28 Replies
@Dexter
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.NaI + acetone Dehalogenation bhi karta hai
E2 mech
Same as Zn dust
Ye pata kab chlega fir
Ki kab elimination
Kab substitution
@Dexter
dekho yaar
ykw i will give u reading material
it would be better
James Ashenhurst
Master Organic Chemistry
Deciding SN1/SN2/E1/E2 (1) - The Substrate
SN1 SN2 E1 E2 : Substrate. The biggest impact on which reaction pathway occurs is whether the alkyl halide is primary, secondary, or tertiary.
mil ni raha isme kuch
e2 ke liye to strongly basic hi likha ha idhar bas
pura read kiya?
https://chemistry.stackexchange.com/questions/108000/why-does-d-l-2-3-dibromobutane-on-reaction-with-nai-acetone-give-cis-2-butene
@Prasan isme process me actually kya hai vo explain kiya hai brief try this out
Isme bola ki agar iodine lagjayegi dono bromine ki jagha, to rotation hogi uss jagha and fir elimination hogi
But elimination hogi kyun
Practical cheez ha kya ye? Observation se kehrahe hain
2 Iodine aaju baju bhari unstable rhegi
Bade size k karn
Islie elimination feasible ho jyega waha
asli mech aisi hi h kya ya bas jugaad hai?
iirc hota to esa hi hai
@Enamine prabhuuu
but i need to take a look bohot time se oc dekhi ni
Bruh ruko
Upar se padhna padega
rotn to dono ko opposite plane me krne ke lie hogi? E2 ke lie
Haan rotation to vahi hogi
Yahan di iodide banega
Uske baad halonium ion ke through elimination jayegi
This is like those glycerol vaali reactions
@Real potato @Dexter @Sephrina
I'll send the mechanism
Meri behen mera tab chhod de ek baar 😭🙏
I'll draw it out for you guys
ha di iodide tk i know but uske baad whi hoga na elimination? Size bde hone k reason se y ig ya kuch or reason hai
Size bada hona is one factor
Plus
If one of the iodines leaves
The other can coordinate to that carbon
Forming a halonium ion
You must've seen that in Br2/CCl4 reactions with alkenes
Anti addition vala
Ha
Very stabilised intermediate
'cause the charge gets spread out
Although strained
i see:uhh:
But charge delocalisation counters yhat
That*
Stable hi hua fir to intermediate
Hmm
kinda
makes sense :look:
koi nhi koi nhiii