IIT JEE , AIEEE Forum - Chemistry , Organic Chemistry - gud Qstin - tell what the product is --

rohanrony

CH₃--(CH₃)₂CONa + CH₂=CH₂--Br =

rohanrony

pls find an anser for me

arpan1

do u need the ans right now

see i can provide u a better solution tommorow

is that o.k. with u

ananth_patri

may be NaBr separates out and the remaining forms CH3--(CH3)2-CO-CH=CH2 is it rite??

rohanrony

is there any effect of double bond?

ananth_patri

ya well in my product there is resonance betw the = and CO no?? is it rite??

rohanrony

IN MY TEXT the mechnisn of this reaction is not given so i cant under stan d how it takes place

if , ananth can u find the mech of this

rakesh61

CH3--(CH3)2COCH=CH2

its simply an electrophillic substitution reaction

magaishwarya

CH₃(CH₂)₂COCH₂=CH₂

harsha_27

First notice few things here

1.Nucleophile is bulky, so it is a very good base than a nucleophile(just like potassium ter-butoxide).

2.The carbon attached to Br is vinylic,I mean vinylic bonds are very strong and do not break that easily.

So I think elimination predominates substitution here.

The major product will be an E2 based Dehydrohalogenation.

So H-C

C-H ,acetylene, will be the major product.