4) FinkelsteinReactio (Alkyl halide preparation)
R X
-
+ Na -
I - R -
I + Nax [✗ = Cl , Bo ]
(this reaction can favoured in forward
be direction by precipitating Nax with dry acetone .
Acc .
to Le chattier 's Principle]
(2) Swartz Reaction :
R -
✗ + Metallic florid e - R F -
+
Agx
( ✗ Cl
=
,
Br )
( AgfSbfz
Hgzfz , ,
Cofz ,
)
Finkelstein and Swartz Rxh
Halogen exchange ox
"
(3) SandMayer 's Reaction :
Cl , Brand CN → can be easily introduced in the benzene .
ring of benzene diazonium
salt in [v11) ion
presence of .
Nice
ÉÉ + Na
"
ÉÉ + Ne
Benzene diazonium
chloride
+ N2
CUCNIKCN
:-)
*÷: ↑
K3B= : Diazotization Reaction :( How this Benzene diazonium chloride Ps formed )
Diazonium Gotts Need) is
prepared by treating ice cold solution of Aniline in excess
dilute HCl with ag Solh .
of NaN02 at low temperature .
4h2 HNOZ / HCl or Nice
ts
(0-52)
Aniline Benzene dizonium
chloride
141 Wurtz Reaction :
R -
X + 2N a + X -
R ¥É R -
R + ZNAX
Ñ
ey:-(Hz ( Hz Br + 2 Nat Bo [ Hz Ctb ( Hz cuz Ctlz CH } -12 Na Bo
- -
- - - -
-
: 2C Hz Na
ᵈ% (H }
Ig ✗ Ctb 2 Na ✗
-
-
+ 2 - +