1.

Reimer Tiemann reaction introduces an aldehyde group, on to the ring of phenol, ortho to hydroxyl group. The reaction involves electro-philic aromatic substitution. This is a general method for synthesis of substituted salicyladehyde as depicted below Which one of the following reagents is used in the above reactions

Answer»

aq `NAOH+CH_(3)Cl`
aq `NaOH+CH_(2)Cl_(2)`
aq `NaOH+CH_(3)Cl_(3)`
aq `NaOH+C Cl_(4)`

SOLUTION :`NaOH aq+ CHCl_(3)`
`Cl_(3)C-H UNDERSET(-H_(2)O)overset(OH^(-))rarr Cl_(3)C^(-)`


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