Classify the following as primary, secondary and tertiary alcohols :
Primary alcohols : (i), (ii) and (iii)
Secondary alcohols : (iv) and (v)
Tertiary alcohols : (vi)
Identify allylic alcohols in the above examples.
Allvlir alcohols : (ii) and (vi).
Name the following compounds according to IUPAC system.
- 2, 5-Dimethylhexane-1,3-diol
- 2-Bromo-3-methylbut-2-en-1 -ol
Show how are the following alcohols prepared by the reaction of a suitable Grignard reagent on methanal.
Write structures of the products of the following reactions :
Give structures of the products you would expect when each of the following alcohol reacts with (a) HCl – ZnCl2 (b) HBr and (c) SOCl2.
Predict the major product of acid catalysed dehydration of
- 1-methylcyclohexanol and
Ortho and para nitrophenols are more acidic than phenol. Draw the resonance structures of the corresponding phenoxide ions.
The attachment of the -NO2 group to the phenol molecule at 0- and p-positions decreases the electron density on oxygen atom. This causes the oxygen atom to pull the bond pair of electrons of the O – H bond towards itself thereby facilitating the release of H as H+.
The resonance structures of the phenoxide ions are :
Write the equations involved in the following reactions :
- Reimer-Tiemann reaction
- Kolbe’s reaction
Write the reactions of Williamson synthesis of 2-ethoxy-3-methylpentane starting from ethanol and 3-methylpentan-2-ol.
Which of the following is an appropriate set of reactants for the preparation of 1 -methoxy-4- nitrobenzene and why?
Predict the products of the following reactions :