Question

Alkane can be prepared by

• A. at action of Grignard's reagent with water
• B. the reduction of alkyl halide with $H_2$ in presence of nickel
• C. the action of ethereal of alkyl halide with sodium metal
• D. all the above

Answer 1

Answer: (D)

A. $RMgBr+HOH\to RH+MgBr(OH)$

B. $R-X+H_2\stackrel{Ni}{\to }RH+HX$

C. $\text{R}-\text{X}\text{+}\text{2Na}\text{+}\text{X}-\text{R}\stackrel{\text{dry}\text{ether}}{\to }\text{R}-\text{R}\text{+}\text{2NaX}$

All these methods can be used to prepare alkane.