Potassium Fluoride → 4-(5-cyano-1-methyl-1H-pyrrol-2-yl)-N,N-dimethyl-2-(trifluoromethyl)benzenesulfonamide

HRID 2239419Notes

Reaction equation

HRID 2239419 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([S:8]([N:11]([CH3:13])[CH3:12])(=[O:10])=[O:9])=[C:4]([C:14]([F:17])([F:16])[F:15])[CH:3]=1.[C:18]([C:20]1[N:24]([CH3:25])[C:23](B(O)O)=[CH:22][CH:21]=1)#[N:19].[F-].[K+]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].C(P(C(C)(C)C)C(C)(C)C)(C)(C)C>[C:18]([C:20]1[N:24]([CH3:25])[C:23]([C:2]2[CH:7]=[CH:6][C:5]([S:8]([N:11]([CH3:13])[CH3:12])(=[O:10])=[O:9])=[C:4]([C:14]([F:17])([F:16])[F:15])[CH:3]=2)=[CH:22][CH:21]=1)#[N:19]

Participants

6

Reactant 3

HCID 522689Potassium FluorideHCID 11708078(5-cyano-1-methyl-1H-pyrrol-2-yl)boronic acidHCID 68410001Benzenesulfonamide, 4-bromo-N,N-dimethyl-2-(trifluoromethyl)-

Product 1

HCID 250049194-(5-cyano-1-methyl-1H-pyrrol-2-yl)-N,N-dimethyl-2-(trifluoromethyl)benzenesulfonamideYield 58%

Reagents, catalysts & solvents 2

HCID 83681Tris(1,1-dimethylethyl)phosphineCatalystHCID 9811564Bis(dibenzylideneacetone)palladiumCatalyst

Procedure

According to general procedure B, 4-bromo-N,N-dimethyl-2-(trifluoromethyl)benzenesulfonamide (186 mg, 0.56 mmol), 5-cyano-1-methyl-1H-pyrrol-2-ylboronic acid (100 mg, 0.67 mmol), potassium fluoride (107 mg, 1.85 mmol), and tris(dibenzylideneacetone)dipalladium(0) (14 mg, 0.01 mmol) were placed in an oven dried flask under nitrogen and dry THF (1.4 mL) was added. Tri-t-butylphosphine (83 μL, 0.02 mmol, 10 wt % in hexane) was added and the reaction was stirred for 16 hours. 4-(5-cyano-1-methyl-1H-pyrrol-2-yl)-N,N-dimethyl-2-(trifluoromethyl)benzenesulfonamide (115 mg, 58%) was provided after purification. MS (ESI) m/z 357. HPLC purity 98.4% at 210-370 nm, 10.4 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.

Workup

  1. customwere placed in an oven
  2. customdried flask under nitrogen
  3. additiondry THF (1.4 mL) was added

Sources & evidence

ORD record
ord-60dea2f0630741a9b12ba5cabfaa8917
Source dataset
uspto-grants-2010_05
Patent number
US07723332B2

Reaction notes

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