major product??

The major monobromination product in the photochemical bromination of 2,2-dimethylbutane is???

35 Answers

3
msp ·

have i given the correct reason or i blabbered

1
voldy ·

why do you ppl bring in magner weermein here ?? It's not possible . the secondary hydrogen alone reacts.

no rearrangement , according to me , forgive me if I'm wrong

If you disagree , then give some proof. I'd like to know of some source which says that this thing is possible . thanks in advance.

3
msp ·

@sky

free radicals are very very reactive , they react readily with another free radical to get a product and so they didnt have enuf time to get rearranged.

1
chinmay ·

does free radical undergo rearrangement like carbocations??

1
vector ·

free radical do not undergo rearrangement never

1
skygirl ·

who / what is this magner weermein ?? [seeing it first tym]

1
chinmay ·

Then how is this product possible??

1
skygirl ·

YUP! I WAS WRONG IN MY PREVIOUS POST...

THANX TO ALL OF YOU FOR CORRECTING ME!!

I READ IT JUS NOW IN MORRISON ...

REARRANGEMENT NOT POSSIBLE IN FREE-RADICALS ...

TX AGAIN :)

3
msp ·

sky wat is the reason given in the buk

1
skygirl ·

1
skygirl ·

i dun think u blabbered...

reason not given .. [not given in the part i read]

only evidence given ....

3
msp ·

k

3
msp ·

btw sky have u completed morrison & boyd

1
voldy ·

http://en.wikipedia.org/wiki/Wagner-Meerwein_rearrangement

1
skygirl ·

kk srinath :)

@sankara ... no i havent completed ... but read almost ...

missed many things as well ... like this one... its an imp thing i overlooked :( ... tx u guys :)

3
msp ·

sri i dunno wat u want to say abt the rearrangement da

1
voldy ·

I've not said anything just gave link.

3
msp ·

k

1
voldy ·

wagner meerwein is only for carbocations. not free radicals.

21
tapanmast Vora ·

hi dude,

i guess one of the primary H must get replaced as photochemical bromiantion occurs by free radical if i'm not wrong....

am i on the rite track then i'll think wether its the one on 1st carb or the 4th.....
else [2]

21
tapanmast Vora ·

hey mathie : y methyl shift?? [7]

24
eureka123 ·

yup mathematics u r correct..........can u give the mechanism........plzzzz[1]

39
Dr.House ·

thanks dude.

nothing great, bromine is highly regioselective. use that fact and u will get it.

39
Dr.House ·

@tapanmast : wagner meerwein rearrangement

1
voldy ·

believe me , it's not possible . even if you think out of the box. I'm quite sure on this. onyl secondary hydrogen will be substituted.

24
eureka123 ·

actually i am confused about reactivity of Bromine.......I know its higly selective....but not in detail..........can anyone of u ,plz explain any arbitrary reaction in detail????plzzzzzz[1]

21
tapanmast Vora ·

yo mathie rite [4] ......

i forgot dat again???

ur name shud be CHEMISTRIAN!!!! LOL....

39
Dr.House ·

2-bromo 2,3 dimethyl butane

3
msp ·

the selectivity factor for BROMINATION

P: S: T
1: 82:1600

WHERE P IS PRIMARY HYDROGEN
S IS SECONDARY HYDROGEN
T IS TERITARY HYDROGEN

1
skygirl ·

but mechanism ???

will u post it ....

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