Ethoxalyl chloride → HCID 10126274, compound

Participants

Reaction Steps

Ethyl chlorooxoacetate (0.496 mL, 4.44 mmol) was added to a stirring solution of the above thiourea (0.70 g, 2.22 mmol) in dichloromethane (15 mL) and the resulting mixture was stirred overnight at room temperature. Concentration, trituration of the residue with diethyl ether, and recrystallization from boiling methanol afforded 0.647 g (79%) of 1-(4-bromo-phenyl)-2-thioxo-3-(1,2,2-trimethyl-propyl)-imidazolidine-4,5-dione as a yellow solid: mp 207.1–207.9° C.; 1H NMR (DMSO-d6): δ 7.74 (d, 1H), 7.32 (d, 2H), 4.81 (q, 1H), 1.48 (d, 3H), 0.99 (s, 9H); IR (KBr): 3500, 2970, 2230, 1770, 1500 cm−1; MS (m/z) 368 (M+).

Provenance & Evidence