Hydrochloric Acid → HCID 54546984, compound

Participants

Reaction Steps

In a solution of 40 ml of N,N-dimethylformamide and 10 ml of water, 10 g of iron powders and 5.2 g of 2,3-bis(4-nitrostyryl)quinoxaline were dispersed. While stirring, 2.4 ml of hydrochloric acid was dropwise added to the dispersion at room temperature. Stirring was continued for 15 minutes at the same temperature and then for 30 minutes on a steam bath at 70° C. The reaction liquid was transferred to a Soxhlet's extractor and extracted for 3 hours using 300 ml of acetone. The acetone extracts were poured into 500 ml of water to adjust the pH of the liquid to 9 to 10 with an aqueous sodium carbonate solution. The resulting crystals were filtered and dried to obtain 4.3 g (yield 98%) of the product having a melting point of 227° to 228° C.

Provenance & Evidence