POTASSIUM 4-BROMOPHENYLTRIFLUOROBORATE

General procedure: To a solution of the appropriate boronic acid, 1a-j (5 mmol) in MeOH (10 mL) was added dropwise a solution of KHF2 (1.56 g, 20 mmol) in H2O (8 mL) using an addition funnel. The mixture was stirred for 30 min and concentrated under high vacuum. The residual solid was extracted with four portions of 20percent MeOH in acetone. The combined extracts were concentrated close to the saturation point and Et2O was added until no more precipitation was observed. The solid was collected, washed with two portions of Et2O, and dried under high vacuum to give the corresponding products sufficiently pure for characterization.General procedure: To a solution of trifluoroborate (1 mmol) in 3 mL of aqueous DMF (2:1 v/v), cesium triiodide (1 mmol) was added. The mixture was stirred at 80 C for the appropriate time (Table 3) and then diluted with 10 mL of ether. The aqueous layer was extracted twice with ether (5 mL) and the combined organic phase was dried over anhydrous Na2SO4. After evaporation of the solvent the residue was purified by silica gel column chromatography [elute: hexane (or pentane)-ethyl acetate (or Et2O)].Sulfonamide iodobenzene derivative III-1 (4.5 mmol, 1 equivalent), Selectfluor (1.3 equivalent), Trimethylsilyl acetate (2.6 equivalents) was dissolved in 15 mL of acetonitrile.The reaction was carried out at a temperature of 50 C for 24 hours.After cooling to room temperature,

Molecular Weight:262.91
Hydrogen Bond Acceptor Count:4
Exact Mass:261.91786
Monoisotopic Mass:261.91786
Heavy Atom Count:12
Complexity:133
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes