Potassium Carbonate → HCID 59300884, compound

Participants

Reaction Steps

Analogously to general procedure (I) N-(3,3-dimethyl-6-nitro-2-oxo-2,3-dihydro-1H-indol-5-yl)-acetamide (2 g) is alkylated using 2-bromomethyl-tetrahydro-furan (1.7 ml; 15.2 mmol) and K2CO3 (2.1 g; 15.2 mmol) at 30° C. for 3 days. After aqueous work-up the crude material is de-acetylated in MeOH (150 ml) using DBU (2,3 ml) at reflux. After aqueous work-up and purification by RP chromatography 5-amino-3,3-dimethyl-6-nitro-1-(tetrahydro-furan-2-ylmethyl)-1,3-dihydro-indol-2-one (1.88 g) is obtained.

Provenance & Evidence