organic chemistry question for juniors

aieee aspiants can also try their hand

8 Answers

1
Manmay kumar Mohanty ·

i thnk it's (a)

39
Pritish Chakraborty ·

I think so too.
Edited : The other reagents involve the C=O group, which is hindered from reaction by Ph.

1
student ·

no answer is d

u need to block the electron withdrawing group
and alkoxy wont be electron pulling then

39
Pritish Chakraborty ·

What's grignard addition got to do with electron withdrawing groups?

1
student ·

grignard reagent generates carbanion and the negative charge on carbnion is delocalised if e-withdrawing groupp is der hence not making is a strong nucleophile to attack the epoxide ring

39
Pritish Chakraborty ·

Oh? I thought nucleophilicity is assisted by stability and basicity is assisted by localization...still seems a confusing concept.
Surely COCH3 is not that powerful a deactivator to completely destroy our yield of product in (a)...though (d) would be a better idea as per your reasoning.

1
student ·

anothe confusing thing in organic chemistry is

CONJUGATE Vs DIRECT ADDITION

u just cant predict the product

unless u have a lab to carry out kinetics eperiment

1
student ·

pritish i am also now thinking that ur reasoning is perfect

NUCLEOPHILICITY Vs BASICITY
is an old classical topic

and ya

nucleophilicity is depends on polarisabilty also more its polarised
more it will be a better nucleophile
a famous case is S- is better nucleophile than O-

taking all these things in account

i take back my views

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