Treatment of compound o with `KMnO_(4)//H^(+)` gave P, which on heating with ammonia gave Q. The compound Q on treatment with `Br_(2)//NaOH` produced R.On strong heating ,Q gave S, which on furthur treatment with ethyl2-bromopropanate in the presence of KOH followed by acidfication , gave acidificatin , gave a compound T.4

The compound R is

An organic compound ‘A’ on treatment with KCN gave B which on hydrolysis with dil. HCl gave acetic acid. Identify A.

The reaction of compounf P with CH_(3)MgBr (excess) in (C_(2)H_(5)_(2)O followed by addition of H_(2)O give Q the compound Q on treatment with H_(2)SO_(4) at 0^(@) C gives R. the reaaction of R with CH_(3) COCl in the presence of anhydrous AlCl_(3) in CH_(2)Cl_(2) followed by treatment with H_(2)O "produces compound S . [Et in compound P is ethyl group] The reaction, Q to R and R TO S, are

The reaction of compounf P with CH_(3)MgBr (excess) in (C_(2)H_(5)_(2)O followed by addition of H_(2)O give Q the compound Q on treatment with H_(2)SO_(4) at 0^(@) C gives R. the reaaction of R with CH_(3) COCl in the presence of anhydrous AlCl_(3)"in" CH_(2)Cl_(2) followed by treatment with H_(2)O produces compound S. [Et in compound P is ethyl group] The product S is The product S is

The reaction of compounf P with CH_(3)MgBr (excess) in (C_(2)H_(5)_(2)O followed by addition of H_(2)O give Q the compound Q on treatment with H_(2)SO_(4) at 0^(@) C gives R. the reaction of R with CH_(3) COCl in the presence of anhydrous AlCl_(3)"in" CH_(2)Cl_(2) followed by treatment with H_(2)O produces compound S. [Et in compound P is ethyl group] The product S is