CHAPTER : ( Helloalken & Helloarin )
1
Alcoholic ZnCl
R-OH +HCl 2 R-Cl + H2O ( HCl +ZnCl2 Lucas Reagent )
( 3 immidiat reaction , 2 after 5 minuts , 1 no reaction on room tempture )
2
pyridine
R-OH + SOCl2 R-Cl + SO2 + H-Cl
(thionil cloried)
(SOBr2 & SOI2 not maked )
3
3R-OH + PCl3 3R-Cl + H3PO4 ( orthophophorus acid)
R-OH + PCl5 R-Cl + POCl3 +H-Cl
Red P + X2
R-OH R-X + H3PO4 ( In see to ) ( X2 = Br2 / I2 )
4. :
Aciton
R-X + NaI R-I + NaX ( X= Cl , Br )
5
R-X + AgF R-F + AgX ( X = Cl , Br )
6.
CCl
R-COOAg + Br2 4 R-Br + AgBr + CO2
7.
slow
Step -1 R-X R +X ( carbocatain step )
fast
Step - 2 R + Nu R-Nu ( Nu = Neucliophile )
( reactivity =3>2>1 )
1
Alcoholic ZnCl
R-OH +HCl 2 R-Cl + H2O ( HCl +ZnCl2 Lucas Reagent )
( 3 immidiat reaction , 2 after 5 minuts , 1 no reaction on room tempture )
2
pyridine
R-OH + SOCl2 R-Cl + SO2 + H-Cl
(thionil cloried)
(SOBr2 & SOI2 not maked )
3
3R-OH + PCl3 3R-Cl + H3PO4 ( orthophophorus acid)
R-OH + PCl5 R-Cl + POCl3 +H-Cl
Red P + X2
R-OH R-X + H3PO4 ( In see to ) ( X2 = Br2 / I2 )
4. :
Aciton
R-X + NaI R-I + NaX ( X= Cl , Br )
5
R-X + AgF R-F + AgX ( X = Cl , Br )
6.
CCl
R-COOAg + Br2 4 R-Br + AgBr + CO2
7.
slow
Step -1 R-X R +X ( carbocatain step )
fast
Step - 2 R + Nu R-Nu ( Nu = Neucliophile )
( reactivity =3>2>1 )
