Match the reactions given in Column I with the names given in Column II.
| Column I | Column II | ||
|---|---|---|---|
| A. |  |
1. | Fittig reaction |
| B. |  |
2. | Wurtz-Fittig reaction |
| C. |  |
3. | Finkelstein reactioin |
| D. | $\mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}+\mathrm{Nal} \xrightarrow{\text { Dry acetone }} \mathrm{C}_2 \mathrm{H}_5 \mathrm{I}+\mathrm{NaCl}$ | 4. | Sandmeyer reaction |
A. $\rightarrow(2)$ B. $\rightarrow(1)$ C. $\rightarrow(4)$ D. $\rightarrow(3)$
A. A mixture of an alkyl halide and aryl halide gives an alkylarene when treated with sodium in dry ether and this is called Wurtz-Fittig reaction.
B. Aryl halides give analogous compounds when treated with sodium in dry ether, in which two aryl groups are joined together. It is called Fittig reaction.
C. Diazonium salt when treated with cuprous chloride or cuprous bromide gives chlorobenzene or bromobenzene. The reaction is known as Sandmeyer's reaction.
D. Alkyl iodides are prepared by the reaction of alkyl chlorides with sodium iodide in dry acetone. The reaction is known as Finkelstein reaction.
Assertion (A) Phosphorus chlorides (tri and penta) are preferred over thionyl chloride for the preparation of alkyl chlorides from alcohols.
Reason (R) Phosphorus chlorides give pure alkyl halides.
Assertion (A) The boiling points of alkyl halides decrease in the order $\mathrm{RI}>\mathrm{RBr}>\mathrm{RCl}>\mathrm{RF}$
Reason (R) The boiling points of alkyl chlorides, bromides and iodides are considerably higher than that of the hydrocarbon of comparable molecular mass.
Assertion (A) KCN reacts with methyl chloride to give methyl isocyanide.
Reason (R) $\mathrm{CN}^{-}$is an ambident nucleophile.
Assertion (A) tert-butyl bromide undergoes Wurtz reaction to give 2,2,3,3-tetramethylbutane.
Reason (R) In Wurtz reaction, alkyl halides react with sodium in dry ether to give hydrocarbon containing double the number of carbon atoms present in the halide.