Tris(1,1-dimethylethyl)phosphine → HCID 25006738, compound

Participants

Reaction Steps

According to general procedure B, 4-bromo-2,5-difluoro-N-methylbenzenesulfonamide (143 mg, 0.5 mmol), 5-cyano-1-methyl-1H-pyrrol-2-ylboronic acid (90 mg, 0.60 mmol), potassium fluoride (96 mg, 1.65 mmol), and tris(dibenzylideneacetone)dipalladium (12 mg, 0.013 mmol) were placed in an oven dried flask under nitrogen and dry THF (1.3 mL) was added. Tri-t-butylphosphine (75 μL, 0.026 mmol, 10 wt % in hexane) was added and the reaction was stirred for 16 hours. Purification afforded 4-(5-cyano-1-methyl-1H-pyrrol-2-yl)-2,5-difluoro-N-methylbenzenesulfonamide (24 mg). HPLC purity 87.6% at 210-370 nm, 8.4 min.; the Xterra® RP18 column, 3.5μ, 150×4.6 mm column, 1.2 mL/min., 85/15-5/95 (ammonium formate buffer pH=3.5/ACN+MeOH) for 10 min., hold 4 min. HRMS: calcd for C13H11F2N3O2S−H+, 310.04673; found (ESI-FTMS, [M−H]−1), 310.04692

Provenance & Evidence