a. An armatic compound (A) (C_(7)H_(8) O) on reaction with Br_(2) + H_(2)O gives a white ppt. of compound (B) (C_(7) H_(5) Obr_(3)). Compound (C), an isomer of (A) also gives the same reaction and gives a white ppt. of compound(D) (C_(7) H_(5) OBr_(3)). Compound (C)is insoluble in NaOH. identify (A), (B), (C) and (D). b. I. Starting from C_(6) H_(6) and C_(6) H_(5) OH, synthesise phenyl 1-2,4- dinitrophenyl ether (B). II. Could we have first prepared and then nitrated Ph_(2)O ? c. 4- Chlorobutanol overset(ᶱ)overset(OH)(rarr) (A) rarr (B) + Cl d. HOCH_(2)- CH_(2) - CH_(2)OH underset(160-170^(@)C)overset("Conc". H_(2) SO_(4))(rarr)

a. An armatic compound (A) (C_(7)H_(8) O) on reaction with Br_(2) + H_

1.	a. An armatic compound (A) (C_(7)H_(8) O) on reaction with Br_(2) + H_(2)O gives a white ppt. of compound (B) (C_(7) H_(5) Obr_(3)). Compound (C), an isomer of (A) also gives the same reaction and gives a white ppt. of compound(D) (C_(7) H_(5) OBr_(3)). Compound (C)is insoluble in NaOH. identify (A), (B), (C) and (D). b. I. Starting from C_(6) H_(6) and C_(6) H_(5) OH, synthesise phenyl 1-2,4- dinitrophenyl ether (B). II. Could we have first prepared and then nitrated Ph_(2)O ? c. 4- Chlorobutanol overset(ᶱ)overset(OH)(rarr) (A) rarr (B) + Cl d. HOCH_(2)- CH_(2) - CH_(2)OH underset(160-170^(@)C)overset("Conc". H_(2) SO_(4))(rarr)
Answer» SOLUTION : The `Cl` UNDERGOES aromic mucleophilic displacement because it is activated by two `(-NO_(2))` groups. II. The ring with first nitro group is deactivated so that the SECOND nitro group enters the other ring. The product is c. This is an example of intramolecular Williamson's reaction.