Sodium ethoxide → HCID 178432899, compound

Participants

Reaction Conditions

Reaction Steps

1-(4-(2-Methyl-1H-imidazol-1-yl)phenyl)guanidine (1.8 g, 8.36 mmol, example 9e), 1-tert-butyl 3-methyl 4-oxopiperidine-1,3-dicarboxylate (2.151 g, 8.36 mmol) and sodium ethoxide (0.569 g, 8.36 mmol) in ethanol (10 mL) were charged in a thick glass vial, which was sealed and heated under microwave irradiation at 110° C. for 2 h. The reaction mixture was allowed to reach room temperature and the solvent was evaporated under reduced pressure. The crude was dissolved in ethyl acetate and washed with water. The organic phase was dried under MgSO4 and concentrated under reduced pressure yielding tert-butyl 4-hydroxy-2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate (1.970 g, 55.8%). The product was used as such in the subsequent step. MS (ES+) m/z 423.3 (M+H)+

Provenance & Evidence