Fundamental Organic Chemistry

1-Methanol
CH 3 OH
Methyl alcohol is colorless liquid , have characteristic odor , miscible in water ,
toxic , burned by blue flame .
Test
1-Oxidation Reaction:
In a test tube put 1 ml of methanol
+1ml of potassium dichromate
K 2 Cr 2 O 7 + drops of conc. sulphuric
acid .
Observation
The orange color
of the solution
changes to green.
O
Result
The green color is chromium
sulphate Cr 2 (SO 4 ) 3 which
formed due to the oxidation of
methanol to Formaldehyde (10).
K 2
Cr 2
O 7
+ 4 H 2
SO 4
+ 3 CH 3
OH 3 H C H
+ K 2
SO 4
+ Cr 2
(SO 4
) 3
+ 7 H 2
O
2-Esterification :
In a test tube put 1ml of methanol
+ 0.5 gm of salicylic acid + drops
of conc. H 2 SO 4 & heat in water
bath for 3 min. then cool and pour
the content of the test tube into
beaker contains Na 2 CO 3 .
Vix (oil of winter
green ) odor
appear.
... (10)
The product is
methyl salicylate (11).
COOH
OH
+ CH 3
OH
COOCH
H 3
2
SO 4
Conc. + H 2
O
OH
methyl salicylate … (11)
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