- It is necessary to avoid even traces of moisture from a Grignard reagent.
- Chloroform is stored in closed dark coloured bottles completely filled.
- The carbon– oxygen bond length in phenol is slightly less than that in methanol.
Propan-1-ol, 2,4,6-trinitrophenol, 3-nitrophenol, 3,5-dinitrophenol, phenol, 4-methylphenol
Q. 9. Give equations of the following reactions: (3 marks)
- Preparation of Sec-Butyl alcohol from ethanal
- Preparation of Phenol from Aniline.
- Treating phenol with chloroform in presence of aqueous NaOH.
- Propanoic acid and propanal
- Ethanal and Benzaldehyde
- Pentan-3-one and Pentan-2-one
- Propanone to Propene
- Benzene to m-Nitroacetophenone
- Chlorobenzene to benzoic acid
- Propanoic acid to propene
- Propyne to propan-2-ol
Q. 12. Explain the following with the help of suitable examples: (5 marks)
(a) Limitation of Williamsons synthesis (b) Stephen reaction. (c) Hell-Volhard-Zelinsky reaction (d) Aldol Condensation (e) Wolff-Kishner reduction.
- PhMgBr and then H3O+ (ii) Tollens’ reagent
(ii) Out of C6H5CH2Cl and C6H5CHClC6H5, which is more easily hydrolysed by aqueous KOH.