Organic Chemistry - organic discussion!

1

? ·2009-01-28 10:32:47

subash do you have anything to discuss?

i mean i was doin some physics ......lets do physics today !

or will continue this stuff tomorow !!

what do you say ?

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

? ·2009-01-28 10:30:15

yes !... siddhart !!

anyhow the mightier will survive !

its the law of nature !

the weak is indeed replaced by the strong ! :)

in this case its nucleophile !

UP 0 DOWN 0
Post on FacebookPost anonymously?

11

Subash ·2009-01-28 10:30:07

so can we start for today

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

? ·2009-01-28 10:27:54

yup sankar ...even OH^- is a better base !

UP 0 DOWN 0
Post on FacebookPost anonymously?

3

msp ·2009-01-28 07:18:50

am i rite or rong unique

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

Siddharth ·2009-01-27 05:51:23

You are absolutely wrong.
Let me reproduce from the text book.

"(5) In nucleophilic substitution reactions basicity of leaving group should be less than the basicity of incoming nucleophilic group. Thus strong basic nucleophilic group replaces weakly basic nucleophilic group of the substrate"

Modern Organic Chemistry by Jagadamba Singh ---page 212

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

voldy ·2009-01-27 05:12:15

there are many . I'll only tell why . if it's a strong base it prefers to abstract a protn than go and attack somehwere hope u got it.

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

prateek punj ·2009-01-26 09:17:53

kkkkkk

UP 0 DOWN 0
Post on FacebookPost anonymously?

3

msp ·2009-01-26 18:48:35

unique anna OH^- is a good nucleophile than HS^-

BECOS THE MOLECULE SHUD LIKE

UP 0 DOWN 0
Post on FacebookPost anonymously?

11

Subash ·2009-01-26 10:05:38

ya rite tomorrow nite same time i will come with some thing to discuss as well

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

? ·2009-01-26 10:04:31

so did u guys gain any ??

we will continue it tommorow with some interesting things !!

after all discussion plays a major role in JEE :)

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

Harry Potter ·2009-01-26 10:01:04

iam (very)^1/0 poor in chemistry so i wnat to gain some information through this discussion

UP 0 DOWN 0
Post on FacebookPost anonymously?

11

Subash ·2009-01-26 09:59:13

i am (very)^infinfiy poor in chemistry

i joined this discussion just because i thought i could learn something from this

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

Harry Potter ·2009-01-26 09:57:55

ayyo pawam pedhichirikunathu kando picill.........

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

? ·2009-01-26 09:55:48

subash for the sake of discussion ! :)

i am very very very very very very very very very very poor in chemistry !!

hehe .. even worst than this !

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

Harry Potter ·2009-01-26 09:54:51

ok unique

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

? ·2009-01-26 09:54:17

throw the bonds away prajith!!

hehe ...the second reason was healthy though!

good work !

UP 0 DOWN 0
Post on FacebookPost anonymously?

11

Subash ·2009-01-26 09:53:23

itz okay they are different terms

but one can atleast say nucleophilicity is proportional to basicity

btw r u asking these questions as doubts or discussions

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

? ·2009-01-26 09:52:30

prajith ofcourse it is !! if OH isnt stronger then , obviously HS is !!

intelligent boy ! :)

but reason please !

UP 0 DOWN 0
Post on FacebookPost anonymously?

3

msp ·2009-01-26 08:50:09

charged ions can attack the positively charged atom more effectively than the uncharged ones

UP 0 DOWN 0
Post on FacebookPost anonymously?

3

msp ·2009-01-26 08:58:55

unique anna check my ans

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

Harry Potter ·2009-01-26 08:58:35

wats wrong unique..........

UP 0 DOWN 0
Post on FacebookPost anonymously?

3

msp ·2009-01-26 08:58:22

ok unique then the

order will be RO->RCOO->ROH > RCOOH

a good nucleophile is one which has more tendency to attack the positive charged ion.

the alkoxide ion have more electron density than other molecule and therefore it has the more probability to attack an electrophilic center becos negative charge will spread more over the molecule