nice one

Found it intresting ..so posting here...
not at all my doubt...

idnitfy A and B

10 Answers

39
Pritish Chakraborty ·

What's the formula of the epoxide reagent? Can't see clearly..

1
RAY ·

eureka..:))...did u take a bird n tear it apart/???

1
Rocky Crazy ·

Invisible dude..

1
Unicorn--- Extinct!! ·

98% crude means??

1
Ankur ·

hmm.. he is using mCPBA, epoxiding agent of course, and solvent is CH2CL2 which will prevent the clevage of epoxide to glycol. so.. will give oxirane at double bond's place... Then I read about LDA somewhere (proabably at Pritish's post) that it is Lithium diisopropyl amide and is very strong base... so it will look after very acidic H.

24
eureka123 ·

on right path..continue ankur.....

1
Ankur ·

hmm.. let me think.. a bit confused regarding abstraction of H.. wait..
This is what Pritish did with that question:

39
Pritish Chakraborty ·

So LDA will abstract the most acidic H, and where would we get that? Carbons adjacent to oxygen seem a good bet, since oxygen is so electronegative....
There are no leaving groups on the epoxide substrate, I initially thought LDA would work on the epoxidizing agent-turned-carboxylic acid as chlorine is a leaving group there. I wonder if the carbanion will react on the epoxide itself?

24
eureka123 ·

I want to see the final answer...its a bit tricky..thats why this ques is here..

24
eureka123 ·

no one ??

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