Organic Chemistry Answers

Give the reagents and reaction conditions for the reactions I, II, III, & IV

C₂H₅Br ➡ CH₃CH₂CN ---------------------- (I)

CH₃CH₂CN ➡ C₃H₆O₂ ------------- (II)

C₂H₅Br ➡ C₂H₆O ------------------------(III)

C₂H₆O + C₃H₆O₂ ➡ C₅H₁₀O₂ ------------ (IV)

Give the structure of any four Isomers of C₅H₁₀O₂

The question below is based on the compounds A to D:

A. CH₃CH₂CH₂NH2

B. CH3CH2CONH2

C. C6H5NH2

D. CH3CH2CO2NH4

9a. Give the reagents and conditions by which C may be converted into diazonium salt, and hence into azo-dye.

9b. Give the structure and name of the diazonium salt.

State which compound A ➡ C shows the least basic character. Explain your choice.

A. CH₃CH₂CH₂NH2

B. CH3CH2CONH2

C. C6H5NH2

D. CH3CH2CO2NH4

Give the reagents and conditions which you would use to

(i) Prepare A from B

(ii) Convert B into ethylamine.

Give the systematic name for each of the following compounds

A. CH₃CH₂CH₂NH2

B. CH3CH2CONH2

C. C6H5NH2

D. CH3CH2CO2NH4

State which if these compounds would react with aqueous sodium hydroxide to form ammonia.

Write an equation for one such reaction.

Benzene can be prepared from sodium benzoate by fusing sodium benzoate with sodium hydroxide. This process is called carboxylation.

What is meant by carboxylation?

Write an equation for the reaction.

The question below is based on the following compounds:

(a) CH₃CH(OH)CH₂CH₃

(b) (CH₃)₃CBr

(c) CH₃CH₂CH₂CHO

(d) CH₃CH₂CH=CH₂

(e) HO₂CCH₂CH₂CO₂H

• Which two compounds A ➡ E react to form

(i) An ester

(ii) an acetal

• Give the mechanism of the reaction of :

(i) D with Bromine

(ii) B with aqueous alkali

Write the systematic name for each of the following compounds:

(a) CH₃CH(OH)CH₂CH₃

(b) (CH₃)₃CBr

(c) CH₃CH₂CH₂CHO

(d) CH₃CH₂CH=CH₂

(e) HO₂CCH₂CH₂CO₂H

Use letters A to E to refer to the compounds (if any) which

(i) exhibits optical Isomerism

(ii) react with concentrated sulphuric acid to form an alkene.

(iii) Polymerise under appropriate conditions

The compound C₆H₅N₂Cl was prepared from C₆H₆ by reactions I, II, & III.

C₆H₆ ➡ C₆H₅NO₂ ➡ C₆H₅NH₂ ➡ C₆H₅N₂Cl

I II III

(c) Give the mechanism of the reaction I, II & III

The compound C₆H₅N₂Cl was prepared from C₆H₆ by reactions I, II, & III.

C₆H₆ ➡ C₆H₅NO₂ ➡ C₆H₅NH₂ ➡ C₆H₅N₂Cl

I II III

(a). State the reagents and reaction conditons used for the reactions I, II, & III.

(b). Give the name and structural formula of the compound C₆H₅N₂Cl.