Potassium Carbonate → 1-Benzo[1,3]dioxol-5-yl-cyclopropanecarboxylic Acid[5-(2,4-dimethoxy-phenyl)-pyridin-2-yl]-amide

HRID 17952

Reaction equation

HRID 17952 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]([NH:8][C:9]([C:11]2([C:14]3[CH:22]=[CH:21][C:17]4[O:18][CH2:19][O:20][C:16]=4[CH:15]=3)[CH2:13][CH2:12]2)=[O:10])=[N:6][CH:7]=1.[CH3:23][O:24][C:25]1[CH:30]=[C:29]([O:31][CH3:32])[CH:28]=[CH:27][C:26]=1B(O)O.C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH3:23][O:24][C:25]1[CH:30]=[C:29]([O:31][CH3:32])[CH:28]=[CH:27][C:26]=1[C:2]1[CH:3]=[CH:4][C:5]([NH:8][C:9]([C:11]2([C:14]3[CH:22]=[CH:21][C:17]4[O:18][CH2:19][O:20][C:16]=4[CH:15]=3)[CH2:13][CH2:12]2)=[O:10])=[N:6][CH:7]=1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 27343412,4-Dimethoxybenzeneboronic acidHCID 591661631-(benzo[d][1,3]dioxol-5-yl)-N-(5-bromopyridin-2-yl)cyclopropanecarboxamide

Product 1

HCID 166797091-Benzo[1,3]dioxol-5-yl-cyclopropanecarboxylic Acid[5-(2,4-dimethoxy-phenyl)-pyridin-2-yl]-amide

Reagents, catalysts & solvents 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

1-Benzo[1,3]dioxol-5-yl-cyclopropanecarboxylic acid (5-bromo-pyridin-2-yl)-amide (36.1 mg, 0.10 mmol) was dissolved in 1 mL of N,N-dimethylformamide in a reaction tube. 2,4-Dimethoxybenzeneboronic acid (24 mg, 0.13 mmol), 0.1 mL of an aqueous 2 M potassium carbonate solution, and a catalytic amount of Pd(dppf)Cl2 (6.6 mg, 0.0090 mmol) were added and the reaction mixture was heated at 80° C. for three hours. The resulting material was cooled to room temperature, filtered, and purified by reverse-phase preparative liquid chromatography to yield the pure product as a trifluoroacetic acid salt. ESI-MS m/z calc. 418.2. found 419.0 (M+1)+. Retention time 3.18 minutes. 1H NMR (400 MHz, CD3CN) δ 1.25-1.29 (m, 2H), 1.63-1.67 (m, 2H), 3.83 (s, 3H), 3.86 (s, 3H), 6.04 (s, 2H), 6.64-6.68 (m, 2H), 6.92 (d, J=8.4 Hz, 1H), 7.03-7.06 (m, 2H), 7.30 (d, J=8.3 Hz, 1H), 7.96 (d, J=8.9 Hz, 1H), 8.14 (dd, J=8.9, 2.3 Hz, 1H), 8.38 (d, J=2.2 Hz, 1H), 8.65 (s, 1H).

Workup

  1. temperatureThe resulting material was cooled to room temperature
  2. filtrationfiltered
  3. custompurified by reverse-phase preparative liquid chromatography

Sources & evidence

ORD record
ord-774623a2cf324b43a74d60b03b0f1b8f
Source dataset
uspto-grants-2010_06
Patent number
US07741321B2

Linked notes

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