An organic compoud [A] which has characteristic odour on treatment with `NaOH` forms two compounds [B] and [C]. Compounds [B] has the molecule formula `C_(7)H_(8)O`. Which on oxidation gives back compound [A]-The compound [C] is the sodium salt of an acid [C]. When [C] is heated with sodalime, it yield an aromatic hydrocarbon [D]. Deduce the structures of [A], [B], [C] and [D].

(a) An organic compound (A) has characteristic odour . On treatment with NaOH it forms two compounds (B) and (C ) compound (B ) has molecular formula C_7 H_8 O which on oxidation gives back (A ) . The compound (C ) is a sodium salt of an acid. When (C) is treated with soda lime it yields an aromatic hydrocarbon (D).Deduce the structures of (A ) ,(B ) , (C ) and (D ) write the sequence of reactions involved . (b) complete each synthesis by filling the missing starting materials reagents or products (x,y and z ) (i) C_6 H_5 CHO +CH_3 CH_2 CHO overset(NaOH ) to X (ii) CH_3 (CH_2) _9 COOC _2 H_5 overset(Z)to CH_3 (CH_2) _9 CHO (c) How will you bring about the following conversions in not more than two steps (i) Toluene to benzaldehyde (ii) Ethylcyanide to 1- Phenylpropanone .

A compound [A] of molecular formula C_(4)H_(9)Br yields a compound [B] of molecular formula C_(4)H_(10)O when reated with aqueous NaOH . On oxidation [B] gives a ketone [C]. The vigorous oxidation of ketone gives ethanoic acid. Deduce the structure of A, B and C.

A compound [A] of molecular formula C_(4)H_(9)Br yields a compound [B] of molecular formula C_(4)H_(10)O when reated with aqueous NaOH . On oxidation [B] gives a ketone [C]. The vigorous oxidation of ketone gives ethanoic acid. Deduce the structure of A, B and C.