A compound (A) C_(5)H_(9)Br on treatment with Mg in dry ether gives a compound (B) which on reaction with acetaldehyde gives an alcohol (C), on mild acidification prolonged treatment of alcohol with equivalent amount of HBr gives a compound (D) which on reaction with alcoholic KOH gives compound (E). compound (E) on ozonolysis followed by treatment with H_(2)O//Zn gives (F). the compound (F) on treatment with base gives 1 acetyl cyclopentene (G). identify (A) to (G).

A compound (A) C_(5)H_(9)Br on treatment with Mg in dry ether gives a

1.	A compound (A) C_(5)H_(9)Br on treatment with Mg in dry ether gives a compound (B) which on reaction with acetaldehyde gives an alcohol (C), on mild acidification prolonged treatment of alcohol with equivalent amount of HBr gives a compound (D) which on reaction with alcoholic KOH gives compound (E). compound (E) on ozonolysis followed by treatment with H_(2)O//Zn gives (F). the compound (F) on treatment with base gives 1 acetyl cyclopentene (G). identify (A) to (G).
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