Benzenesulfonamide, p-bromo-N-ethyl- → HCID 25004247, compound

HRID 2239387Notes

Reaction equation

HRID 2239387 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][CH2:12][CH3:13])(=[O:10])=[O:9])=[CH:4][CH:3]=1.[C:14]([C:16]1[N:20]([CH3:21])[C:19](B(O)O)=[CH:18][CH:17]=1)#[N:15].[F-].[K+].C(P(C(C)(C)C)C(C)(C)C)(C)(C)C>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:14]([C:16]1[N:20]([CH3:21])[C:19]([C:2]2[CH:7]=[CH:6][C:5]([S:8]([NH:11][CH2:12][CH3:13])(=[O:10])=[O:9])=[CH:4][CH:3]=2)=[CH:18][CH:17]=1)#[N:15]

Participants

6

Reactant 4

HCID 74803Benzenesulfonamide, p-bromo-N-ethyl-HCID 83681Tris(1,1-dimethylethyl)phosphineHCID 522689Potassium FluorideHCID 11708078(5-cyano-1-methyl-1H-pyrrol-2-yl)boronic acid

Product 1

HCID 25004247HCID 25004247, compoundYield 13%

Reagents, catalysts & solvents 1

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalyst

Procedure

In an analogous manner to general procedure B, 4-bromo-N-ethylbenzenesulfonamide (105 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. 4-(5-cyano-1-methyl-1H-pyrrol-2-yl)-N-ethylbenzenesulfonamide (15 mg, 13%) was provided after purification. MS (ESI) m/z 289. HPLC purity 100.0% at 210-370 nm, 9.6 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. customdried flask under nitrogen
  2. additiondry THF (1.0 mL) was added

Sources & evidence

ORD record
ord-f6298a01c79d4d1b9971ac99ff0d7b71
Source dataset
uspto-grants-2010_05
Patent number
US07723332B2

Reaction notes

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