New alcohol1

[long nebula]

Im thinking Ngp should happen. But mechanism nahi pata chlrahi kese hogi9

[prime sequoia]

<@&1227988359910260737>

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.

[vagrant tangle]

C hai answer?

[long nebula]

Yessir

[vagrant tangle]

So yeah see

Sulphur vala jo group hai

It's a better leaving group for the initial reaction

'cause sulphur pe negative jyada stable hota hai

I actually read some stack exchange 'cause I didn't have a good feeling about this

Doubt ho raha tha

So actual reason

It's ki dekho

Oxygen vaale group me bhi C=O vaale carbon ke saath partial pi bond character aa raha hai

Sulphur vaale me bhi aa raha hai

Which is decreasing the electrophilicity of that carbon

C=O vaala

But

Despite oxygen being more electronegative

(agar jyada electronegative hai to +M effect should be less right?)

Oxygen shows better +M here

Why now?

O-C pi bond would be 2p-2p pi bond

S-C pi bond would be 2p-3p pi bond

[vagrant tangle]

Better overlap (less energy mismatch; symmetry)

So Oxygen vaale carbon ki electrophilicity reduces more as compared to sulphur vala carbon

That's why OH- attacks Sulphur vala group first

Then that negative kicks out the oxygen moeity

[long nebula]

Thoda confusing ha smjhne mei time lagra

[vagrant tangle]

Try Karo

Padho dobara

Lage doubt to poochna

[long nebula]

+solved @vagrant tangle