Worksheet

1.

What is meant by the following terms ? Give an example of the reaction in each case.
(ix) 2,4-DNP-derivative

2.

Draw structures of the following derivatives.
(iv) The semicarbazone of cyclobutanone

3.

Complete each synthesis by giving missing starting material, reagent or products.

4.

Complete each synthesis by giving missing starting material, reagent or products.

5.

Draw the structures of the following compounds.
(viii) Hex-2-en-4-ynoic acid

6.

Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither? Write the structures of the expected products of aldol condensation and Cannizzaro reaction.
(ii) 2-Methylpentanal

7.

How will you prepare the following compounds from benzene? You may use any inorganic reagent and any organic reagent having not more than one carbon atom
(iv) Phenylacetic acid

8.

Arrange the following compounds in increasing order of their property as indicated:
(ii) \(CH_{3}CH_{2}CH(Br)COOH\), \(CH_{3}CH(Br)CH_{2}COOH\), \((CH_{3})_{2}CHCOOH\), \(CH_{3}CH_{2}CH_{2}COOH\) (acid strength)

9.

How will you convert ethanal into the following compounds?
(i) Butane-1,3-diol

10.

Draw the structures of the following compounds.
(vii) p,p’-Dihydroxybenzophenone

11.

Draw structures of the following derivatives.
(v) The ethylene ketal of hexan-3-one

12.

Total number of aldol products obtained when acetaldehyde and propionaldehyde are subjected to aldol condensation in the presence of base

a.

1

b.

2

c.

3

d.

4

13.

Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither? Write the structures of the expected products of aldol condensation and Cannizzaro reaction.
(i) Methanal

14.

What is meant by the following terms ? Give an example of the reaction in each case.
(viii) Imine

15.

Although phenoxide ion has more number of resonating structures than carboxylate ion, carboxylic acid is a stronger acid than phenol. Why?

16.

How will you convert ethanal into the following compounds?
(ii) But-2-enal

17.

Draw structures of the following derivatives.
(vi) The methyl hemiacetal of formaldehyde

18.

How will you bring about the following conversions in not more than two steps?
(v) Benzaldehyde to Benzophenone

19.

Complete each synthesis by giving missing starting material, reagent or products.

20.

Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither? Write the structures of the expected products of aldol condensation and Cannizzaro reaction.
(iv) Benzophenone