2-Amino-6-nitrobenzothiazole → 2,6-Benzothiazolediamine

Participants

Reaction Steps

To a solution of 2-amino-6-nitrobenzothiazole (10 g, 0.051 mol) in 100 mL of tetrahydrofuran was added 3.0 g Raney-nickel active catalyst. The reaction mixture was hydrogenated until hydrogen consumption ceased. The reaction mixture was filtered through a Celite pad and the solution was concentrated under reduced pressure to produce a brown solid. The solid was recrystallized from toluene, yielding 2,6-diaminobenzothiazole (50% yield, m.p. 202-203° C.).

Provenance & Evidence