Hydrochloric Acid → 4-[3-(Thiophen-2-yl)-1,2,4-oxadiazol-5-yl]aniline

Participants

Reaction Steps

A suspension of 5-(4-nitrophenyl)-3-(2-thienyl)-1,2,4-oxadiazole (3.1 g, 0.01 mole) in 150 ml of absolute alcohol containing 1.84 ml of concentrated HCl is hydrogenated using 0.4 g of 5% Pd on carbon as catalyst. The solid is slurried with saturated K2CO3 solution and extracted with chloroform. Evaporation of the chloroform in vacuo gives the amine as a yellow solid, 1.4 g (50% yield).

Provenance & Evidence