some dbts in nomenclature

@kartick....
alcohol has higher priority that amino acids...

actually me 2 having a few doubts ..normally alkenes are given preference over alkynes while selecting functional grp ...i came across few compounds ....where alkyne was given preference ..just bcz the triple bond was a terminal one ....
I think nomenclature is far more vast than our syllabus ...so IIT wont ask complicated stuff....

5-Ethyl-3-iodoheptane..

then what abt this one?

Q.6 : halogen grps arent treated as functional groups ....
for eg: 1-chlorobutane, 2-bromopentene.....etc...actually there is a priority order of functional grps ....

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

PS: someone confirm if it is correct

Q4. Kartick is correct

amide has higher priority acc. to NCERT 11th pg. 336 !!!!!!!!!!!

When my tuition sir taught he discussed both the compounds..i just checked up the copy..even he said --
1. 3-carboxypentane-1,5-dioic acid
2. 3-cyanopentane-1,5-dinitrile

satisfied with manish sir , IF IT IS THE COMP. THEN

THEN IT'S NAME WILL BE:
2-hydroxypropane-1,2,3-tri carboxylicacid

Q4
4-methanamide-hex-5-en-2-ol

I ma not 100%sure abt this

in my school book Succinic Acid is 1,4-butanedioic acid...c this

http://en.wikipedia.org/wiki/Succinic_acid

has IUPAC revised its nomenclature regarding this ??

ur name is in "Other names" there

Q3
2-ethenyl-pentamide

for ronald...Q1
if the compound contains more than 2 acid functional groups,the longest alkyl chain containing max no. of carboxy functional groups becomes parent chain and C00H groups are treated as locant.Preference in numbering given to COOH group [1]

but then why is it not the same for the CN groups

sir, but isnt the first rule to select the longest C-atom chain?

in that case shudnt the name be 3-carboxy pentan-dioic acid?