5-Chloro-2-furaldehyde → 10-(5-Chlorofuran-2-yl)-5-(3-chlorophenyl)-1,3-dimethyl-7,8,9,10-tetrahydropyrazino[1',2':1,2]pyrrolo[3,4-d]pyrimidine-2,4(1H,3H)-dione

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

6-(2-Amino-ethyl)-5-(3-chloro-phenyl)-1,3-dimethyl-1,6-dihydro-pyrrolo[3,4-d]pyrimidine-2,4-dione (Intermediate B) (150 mg, 0.451 mmol) and 5-chlorofuran-2-carbaldehyde (commercially available, 58.8 mg, 0.451 mmol) were suspended in ethanol (1.2 ml). The mixture was heated at 50° C. under microwave irradiation for 1 hour. TFA (4 drops) was added to the reaction mixture and heating continued at 60° C. for a further 30 mins under microwave irradiation. The reaction mixture was diluted with ethanol (0.5 mL) and purified using mass directed HPLC. The product containing fractions were combined and evaporated under reduced pressure to afford a white solid which was dried under vacuum at 50° C. for 16 h to afford the title compound as a pale tan solid;

Herkunft & Nachweise