1
Ankur
·2010-03-25 10:22:41
@Aveek: nothing co-relating. It's just Test-Series. :D
29
govind
·2010-03-25 13:25:11
HCOOH..Formic Acid shows positive Tollen's and Fehling's test..
The attack of NO+ on benzene is faster than NO2+
In case of non-polar medium the formation of NO2+ is the slow step... and in case of polar solvents the removal of proton will be the slowest step in Nitration...
The vant hoff factor in Nitration mixture is ≈ 3.82
In case of Sulphonation the electrophile is SO3
1
abhishek sahoo
·2010-03-26 06:57:16
esters having one α - hydrogen do not undergo claisen condensation reaction..........
however with strong bases such as triphenylmethyl sodium, some esters like ethyl isobutyrate undergo claisen condensation ..
1
abhishek sahoo
·2010-03-26 07:02:53
not an exception but it's good to know these
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1
hacker
·2010-03-26 08:27:58
[1][1][1]nice work friends[1][1][1].thanx to u all......
P.S.yes,abhishek.......no such thing tht u only need to post exceptions any such thing which is rare to find n notice+exceptions+other properties+more........caN BE ADDED[1]
1
Ankur
·2010-03-26 10:38:17
@abhishek : for Claisen condensation : I didn't know that! But how can this be true. I mean, there is well defined reason why atleast 2 alpha hydrogen is required for Mr. Claisen... How will it attain equilibrium going with that fact..