Phosphorus pentachloride → HCID 12897713, compound

Participants

Reaction Conditions

Reaction Steps

An intimate mixture of 5-nitroimidazole-4-carboxylic acid (2.0 g) and phosphorus pentachloride (2.67 g) was stirred and heated in an oil bath at 120° C. for 1 hour. The resulting yellow slurry was evaporated at 60° C./0.1 nun Hg for 30 minutes, to give 1,6-dinitro-5H,10H-diimidazo[1,5-a:1',5'-d]pyrazine-5,10-dione (1.90 g) in the form of a yellow solid, m.p. 249°-251° C. (with decomposition). [νmax (KBr disc) 1750 cm-1 ; m/e 278 (M+)].

Provenance & Evidence