Hydrochloric Acid → HCID 69545260, compound

Participants

Reaction Steps

A solution of 5-(N′-(ethoxycarbonylmethyl)ureido)-3-[1-(pyrrol-2-yl)ethylidene]indolin-2-one (95 mg, 0.25 mmol) in tetrahydrofuran (2.5 mL) was treated with NaH (16 mg, 0.40 mmol). After stirring overnight, ethyl acetate (15 mL) and water (5 mL) were added and the reaction mixture was neutralized with 6N HCl. The organic layer dried (NaSO4) and concentrated to afford a crude product (90 mg). Purification by reverse phase HPLC (acetonitrile/water) afforded 5-(2,4-dioxoimidazolidin-1-yl)-3-[1-(pyrrol-2-yl)ethylidene]indolin-2-one; (8 mg); 1H NMR (400 MHz, DMSO-d6) δ 2.72 (s, 3H), 4.02 (s, 2H), 6.36 (m, 1H), 6.96 (d, 1H), 7.04 (m, 2H), 7.36 (d, 1H), 7.60 (m, 1H), 8.22 (s, 1H), 11.14 (s, 1H) ppm.

Provenance & Evidence