Hydrochloric Acid → HCID 178508863, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 136.7 g of bromoacetaldehyde diethylacetal, 347 mL of water, and 17.3 mL of concentrated HCl was heated to about 90° C. with vigorous stirring for about 30 minutes, at which time a clear solution was obtained. The solution was cooled to room temperature and 68.3 g of NaOAc was added. The resulting solution was added, with stirring, to a suspension of 100 g of 2,4-diamino-6-hydroxypyrimidine and 34.2 g of NaOAc in 739 mL of water, which had been heated to 70°-85° C. The reaction was allowed to proceed for 2 hours at 70°-85° C., at which time the reaction was complete. The mixture was cooled to 0° C. and held for about 1.5 hours. The mixture was then filtered and the collected product was washed with 500 mL of water and 500 mL of acetone, and dried, affording 72.3 g (79%) of 2-amino-4-hydroxypyrrolo[2,3-d]pyrimidine. A small sample was further purified by slurry in hot methanol, filtration, and drying, mp>300° C. 1H NMR (300 MHz, DMSO-d6) δ6.03 (s, 2 H), 6.13 (m, 1 H), 6.56 (dd, J=3.3, 2.3 Hz, 1 H), 10.23 (bs, 1 H), 10.93 (bs, 1 H).

Provenance & Evidence