Question

How would you draw the hydrogenation reaction 2-methyl-2-butene and name the product?

Answer 1

The product is 2-methylbutane.

Explanation:

Hydrogen adds to alkenes in the presence of catalysts like `"Pt"`, `"Pd"`, and `"Ni"`.

The equation for the hydrogenation of 2-methylbut-2-ene is

`underbrace(("CH"_3)_2"C=CHCH"_3)_color(red)("2-methylbut-2-ene") + "H"_2 stackrelcolor (blue)("Pt, Pd, or Ni")(→) underbrace(("CH"_3)_2"CH-CH"_2"CH"_3)_color(red)("2-methylbutane")`

The product has a chain of four carbon atoms with a methyl group on `"C-2"`, hence the name 2-methylbutane.