`CH_3C-=C CH_3underset(CaCO_3 and BaSO_4)overset((H_2)/(Pd))to p` Identifty the product quinoline.

Options

A. cis-But-2-ene
B. trans-But-2-ene
C. An equimolar mixture of (1) and (2)
D. unequal amounts of both (1) and (2)

Answer

A

Explanation

`H_2` is adsorbed on the metallic surface, being converted to reactive individual H atoms, the alkyne is also adsorbed, probably through the formation of a `pi` complex the individual H atoms transfer stepwise to the open face of the `pi` bond and the addition is sys. The reduced alkyne then leaves the surface.