Urea → HCID 22347149, compound

Participants

Reaction Steps

The same procedure used to prepare N1-(4-{4-amino-1-[2-cyano-4-(4-methylpiperazino)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-2-fluorophenyl)-2,3-dichloro-1-benzenesulfonamide was employed, except that the final step employed the procedure for urea formation used to prepare ethyl 2-(4-amino-3-{3-fluoro-4-[(3-toluidinocarbonyl)amino]phenyl}-1H-pyrazolo[3,4-d]pyrimidin-1-yl)acetate, entailing the reaction of 2-[4-amino-3-(4-amino-3-fluorophenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-5-(4-methylpiperazino)benzonitrile (0.018 g, 0.041 mmol) with m-tolyl isocyanate (0.005 mL, 0.040 mmol). Purification of the product by preparative HPLC (25 to 100% acetonitrile in 0.1 M aqueous ammonium acetate over 20 min at 21 mL/min using an 8μ Hypersil HS C18, 250×21 mm column, Rt 9.3-10.3 min) afforded N-(4-{4-amino-1-[2-cyano-4-(4-methylpiperazino)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-2-fluorophenyl)-N′-(3-methylphenyl)urea as a yellow powder (0.008 g, 0.014 mmol); RP-HPLC (25 to 100% acetonitrile in 0.1 M aqueous ammonium acetate over 10 min at 1 mL/min using a 5μ Hypersil HS C18, 250×4.6 mm column) Rt 8.03 min; MS (MH)+ 577.

Provenance & Evidence