ethyl 4-(5-bromo-3-nitropyridin-2-yl)tetrahydro-2H-pyran-4-carboxylate → 6'-Bromo-1',2'-dihydrospiro[oxane-4,3'-pyrrolo[3,2-b]pyridine]-2'-one

Participants

Reaction Conditions

Reaction Steps

Prepared according to procedure J using ethyl 4-(5-bromo-3-nitropyridin-2-yl)tetrahydro-2H-pyran-4-carboxylate (250 mg, 0.724 mmol), AcOH (4 mL) and Fe powder (202 mg, 3.62 mmol) and heating the mixture at 100° C. for 2 h. After purification 6′-bromo-2,3,5,6-tetrahydrospiro[pyran-4,3′-pyrrolo[3,2-b]pyridin]-2′(1′H)-one was obtained.

Provenance & Evidence