Transcript Amide Imide.ppt

AMIDES & IMIDES
Polyamine amide
Lithium-Imide batteries
used as binding
materials for electrical
motors, transformers
and electric appliances
Amide
Urea
Sulphanilamide
Imide
Phthalimide
1ry amide
1ry amide
2ry amide
Aliphatic
Aromatic
Aromatic
Urea
Sulphanilamide
Phthalimide
Solid, fine powder.
Solid, fine powder.
Physical properties:
State
Solid, granules.
Color
White
Odor
All odorless
Ignition test:
Inflammability
Change in
appearance
Inflammable, non
luminous, non smoky
Inflammable, luminous, smoky
Melting then
solidifying
Change in odor
Melting
Ammonia odor
Residue
White residue
comment
The compound is aliphatic
No residue
The compounds are aromatic
Solubility:
Urea
H2 O
L.p.
Dil. HCl
10% NaOH
Soluble
Sulphanilamide
In soluble
Phthalimide
In soluble
No change
In soluble
Soluble with warm
(caution)
Na2CO3 test:
Comment:
─
.: weak effervescence
Neutral
.: Acid
- Soluble in Dil. HCl but not ppted by 30% NaOH
- Soluble in 10% NaOH but not ppted by Conc. HCl
Preliminary test:
Urea
Soda lime
On cold:
On hot:
30% NaOH
On cold:
On hot:
FeCl3
On cold:
On hot:
Conc. H2SO4
On cold:
On hot:
Sulphanilamide
No reaction in all
Ammonia odor in all
No reaction in all
Ammonia odor in all
No reaction in all
No reaction in all
No reaction in all
No reaction in all
Phthalimide
Specific test for Urea:
1. Biuret reaction:
few gm urea
drop by drop))
until melt
shaking
cooling
white residue + 10%NaOH (( to dissolve it
clear solution + 1 or 2 drop CuSO4 ((Cupper sulphate))
Purple color
2. Oxalate formation test:
Saturated solution of urea + Oxalic acid solution
white crystalline ppt of urea oxalate (shiny).
3. Nitrate formation test:
Saturated solution of urea + 2 drops Conc. HNO3 (( nitric acid))
white ppt of urea nitrate
Specific test for Sulphanilamide:
1. Amphoteric character:
2. Azo dye formation test:
(1)
sulphanilamide + dil.HCl (until dissolve) + 1 drop of NaNO2 (sod. Nitrite solution)
until faint pale yellow color
{Diazonium salt formed}
It is unstable because that we must put it in ice, without ice it will decompose
few phenol + 10% NaOH (until phenol dissolved)
(2)
Add (1) on (2) gradually
((Azo – dye formation))
Orange – red dye
Specific test for Phthalimide:
1. Phthalein test
Phthalimide + Phenol + 4 drops Conc. H2SO4
cool
heat until fussion
pour in 10% NaOH in beaker
Un stable pink color
2. Flourescein test
Phthalimide + resorcinol + 2-3 drops Conc. H2SO4
cool then pour in 10% NaOH
beaker
heat until fussion
Reddish green fluorescence + H2O
Green fluorescence
IR
Location
Urea
Comment
1690 cm -1
C=O streatching band
1690 cm -1
C=O streatching band
> 3000 cm -1
CH aromatic streatching
band
Sulphanilamide
Phthalimide