Tris(1,1-dimethylethyl)phosphine → HCID 25004584, compound

Participants

Reaction Steps

According to general procedure B, 1-[(4-bromophenyl)sulfonyl]pyrrolidine (116 mg, 0.40 mmol), 5-cyano-1-methyl-1H-pyrrol-2-ylboronic acid (72 mg, 0.48 mmol), potassium fluoride (76 mg, 1.3 mmol), and tris(dibenzylideneacetone)dipalladium(0) (10 mg, 0.01 mmol) were placed in an oven dried flask under nitrogen and dry THF (1.0 mL) was added. Tri-t-butylphosphine (60 μL, 0.02 mmol, 10 wt % in hexane) was added and the reaction was stirred for 16 hours. 1-methyl-5-[4-(pyrrolidin-1-ylsulfonyl)phenyl]-1H-pyrrole-2-carbonitrile (7 mg, 6%) was provided after purification. HRMS: calcd for C16H17N3O2S+H+, 316.11142; found (ESI, [M+H]+), 316.1114. HPLC purity 100.0% at 210-370 nm, 10.3 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.

Provenance & Evidence