Ethyl isocyanate → 4-Ethyl-1-(2-nitrobenzoyl)semicarbazide

Participants

Reaction Steps

To a mixture of 2-nitro-benzoic acid hydrazide (3 g) in DMF (20 mL) was added isocyanato-ethane (1.3 g). The reaction mixture was stirred at room temperature for 3 hours and concentrated in vacuo to provide 4 g of 4-ethyl-1-(2-nitrobenzoyl)-semicarbazide: 1H NMR (300 MHz, CDCl3) δ 8.2 (dd, 1H), 7.8 (s, 3H), 6.4 (bs, 1H), 3.3 (q, 2H), 1.2 (t, 3H).

Provenance & Evidence