5-Methylfurfural → 1,3-Dimethyl-10-(5-methylfuran-2-yl)-5-phenyl-7,8,9,10-tetrahydropyrazino[1',2':1,2]pyrrolo[3,4-d]pyrimidine-2,4(1H,3H)-dione

Participants

Reaction Conditions

Reaction Steps

6-(2-Amino-ethyl)-1,3-dimethyl-5-phenyl-1,6-dihydro-pyrrolo[3,4-d]pyrimidine-2,4-dione (Intermediate A) (519 mg, 1.740 mmol) in EtOH (3 mL) was treated with 5-methylfuran-2-carbaldehyde (commercial) (0.173 mL, 1.740 mmol) and heated at 100° C. for 30 min using microwave irradiation. A further portion of 5-methylfuran-2-carbaldehyde (0.173 mL, 1.740 mmol) was added and heating continued at 100° C. for 10 min. The solvent was removed under reduced pressure and purification by chromatography on silica eluting with 40-80% EtOAc in iso-hexanes afforded the title compound as a yellow solid.

Provenance & Evidence