Water → 7-(2-Chloro-6-fluorobenzyl)-1,3-dimethyl-8-pyrrolidin-1-yl-3,7-dihydro-1H-purine-2,6-dione

Participants

Reaction Conditions

Reaction Steps

A solution of 8-bromo-7-(2-chloro-6-fluorobenzyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione (50 mg, 0.12 mmol) in 300 μL DMSO was treated with pyrrolidine (55 μL, 0.55 mmol) and heated at 130° C. for 15 h. The reaction was cooled to 25° C. and treated with 1 mL H2O. After centrifugation for 1 h the liquid was decanted, and the process was repeated. The reaction was treated with 1 mL toluene and concentrated under reduced pressure. The residue was treated with 2 mL CH2Cl2 followed by isocyanate scavenger resin (500 mg, 0.58 mmol, 1.16 mmol/g). The reaction was filtered after agitating for 30 min, and the filtrate was concentrated under reduced pressure to give 48 mg (>99% yield) of the title compound: 1H NMR (CDCl3, 300 MHz) 7.27-7.18 (m, 2H), 7.02-6.91 (m, 1H), 5.73 (s, 2H), 3.59-3.48 (m, 7H), 3.35 (s, 3H), 1.98-1.87 (m, 4H); MS (ESP+) m/e 392 (MH+); TLC (EtOAc:hexanes/1:1) Rf=0.24.

Provenance & Evidence