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 The electrophile in this reaction is

Answer»

`:CHCl`
`OVERSET(+)(C)HCl_(2)`
`:C Cl_(2)`
`overset(.)(C) Cl_(3)`

Solution :In REIMER Tiemann Reaction
`underset("base")(OH^(-))+CHCl_(3) underset(-H_(2)O)rarr : overset(-)(C) Cl_(3)underset(-Cl^(-))rarr underset(("ELECTROPHILE"))underset("chlorocarbene") ( :C Cl_(2))`


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