IIT JEE 2009 P1 Q2

The IUPAC name of the following compound is

(A)4-Bromo-3-cyanophenol
(B)2-Bromo-5-hydroxybenzonitrile
(C)2-cyano-4-hydroxybromobenzene
(D)6-bromo-3-hydroxybenzonitrile

19 Answers

1
rickde ·

isn't priority of OH > halide

23
qwerty ·

i found the following priority for selecting functional grps thru net
1] Carbocations
2] Carboxylic acid
3] Acid anhydride
4] Esters
5] Acyl halides
6] Amides
7] Nitriles
8] aldehydes
9] Ketones
10] Alcohols
11] Thiols
12] Amines
13] Ether
14] Sulphides
15] Alkenes
16] Alkynes
17]alkanes
18] Alkyl halides
19] Nitro grp

so we can seenitrile grp > OH grp > Br grp , for selecting functional grp
pls tell if there is any correction in it

9
Celestine preetham ·

i thought phenol is a characteristic group by itself and hence ans shuld be A

but many ppl say B :(

1
Optimus Prime ·

no c

1
rickde ·

here we do not consider priority
so B is correct

1
Aditya ·

No dear...

Priority grp is used for the parent chain name...

Otherwise only lowest set of locants is considered!

1
Shreyan ·

why shudn't it be D? please help...im really confused on this...
our chem sir says it shud be D bcoz priority of OH > Br...and lowest set of locants will not be used since different functional groups are present. lowest set of locants is used only to choose numbering for similar groups..

39
Dr.House ·

yoyo! yeh bhii sahiin!

aaj shayaad targetiit main mujhe sab khush khabre hiin mil rahe hain

1
~AjInKyA~ ·

pls tell me
rickde tat ur rite
so i will get rite
b !

1
JOHNCENA IS BACK ·

so...wat!

62
Lokesh Verma ·

[url=http://iitjee2009solutions.targetiit.com]Solution Key with Question Paper of 2009 IIT JEE[/url]

62
Lokesh Verma ·

Yes tapan you are correct

Answer is (B)

21
tapanmast Vora ·

sorie, ajie A is sures rong!

Nitrile priority > phenol

11
mona100 ·

i think A is correct

1
~AjInKyA~ ·

aaaaaaaaaaaa
pls say A
AAA

1
JOHNCENA IS BACK ·

tapan,
don worry.
even i m of opinion that B is correct

1
~AjInKyA~ ·

i for A !

21
tapanmast Vora ·

I hav my Doubts on this un

LOWEST SET OF LOCANTS rule.......

I went for B

62
Lokesh Verma ·

Answer is (B)

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