Binap, (A+-)- → N-[(1S,2S)-2-[(5-Bromopyridin-2-yl)amino]cyclopentyl]-2-(2H-1,2,3-triazol-2-yl)benzamide

HRID 1750682Notes

Reaction equation

HRID 1750682 reaction equation
Cl.[NH2:2][C@H:3]1[CH2:7][CH2:6][CH2:5][C@@H:4]1[NH:8][C:9](=[O:21])[C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=1[N:16]1[N:20]=[CH:19][CH:18]=[N:17]1.[Br:22][C:23]1[CH:24]=[CH:25][C:26](Cl)=[N:27][CH:28]=1.CC(C)([O-])C.[Na+].C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1>C1(C)C=CC=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.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[Br:22][C:23]1[CH:24]=[CH:25][C:26]([NH:2][C@H:3]2[CH2:7][CH2:6][CH2:5][C@@H:4]2[NH:8][C:9](=[O:21])[C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=2[N:16]2[N:17]=[CH:18][CH:19]=[N:20]2)=[N:27][CH:28]=1

Participants

7

Reactant 4

HCID 634876Binap, (A+-)-HCID 27344145-Bromo-2-chloropyridineHCID 23676156Sodium t-butoxideHCID 118025476N-[(1S,2S)-2-Aminocyclopentyl]-2-(2H-1,2,3-triazol-2-yl)benzamide hydrochloride2×

Product 1

HCID 118308185N-[(1S,2S)-2-[(5-Bromopyridin-2-yl)amino]cyclopentyl]-2-(2H-1,2,3-triazol-2-yl)benzamide

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 1140TolueneSolvent

Conditions

Temperature
85 °C

Procedure

A mixture of N-[(1S,2S)-2-aminocyclopentyl]-2-(2H-1,2,3-triazol-2-yl)benzamide hydrochloride (Intermediate 4; 300 mg, 0.98 mmol), 5-bromo-2-chloropyridine (CAS number 53939-30-3; 225 mg, 1.17 mmol), sodium tert-butoxide (150 mg, 1.56 mmol), BINAP (24 mg, 0.039 mmol) and tris(dibenzylideneacetone)dipalladium(0) (18 mg, 0.019 mmol) in toluene (4 ml) was heated at 85° C. overnight. The mixture was partitioned between ethyl acetate (10 ml) and water (10 ml). The aqueous layer was further extracted ici with ethyl acetate (3×20 ml). The combined organics were washed with water (2×20 ml), filtered through a hydrophobic frit and concentrated in vacuo. The crude product was purified by column chromatography (silica, 0-100% ethyl acetate/petrol) to afford the title compound.

Workup

  1. customThe mixture was partitioned between ethyl acetate (10 ml) and water (10 ml)
  2. extractionThe aqueous layer was further extracted ici with ethyl acetate (3×20 ml)
  3. washThe combined organics were washed with water (2×20 ml)
  4. filtrationfiltered through a hydrophobic frit
  5. concentrationconcentrated in vacuo
  6. customThe crude product was purified by column chromatography (silica, 0-100% ethyl acetate/petrol)

Sources & evidence

ORD record
ord-474e668b7981462ab24e02e0c840e870
Source dataset
uspto-grants-2015_10
Patent number
US09156829B2

Reaction notes

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