Question

(i) Give IUPAC names for following compounds: a. HO–CH₂–CH₂–COOH b. CH₃–CHBr–CH₂–CH₃ c. CH₃–CH=CH–COOH (ii) Account for the following: a) Toluene is o,p directing. b. Propene is more stable than ethene.

Reaction of ethyne with Br2 in CCl4 gives:

Phenol when distilled with zinc dust gives:

The catalyst used in Friedel–Crafts reaction is