Water → 3-((2-(((1R,2R)-2-hydroxycyclohexyl)amino)benzo[d]oxazol-6-yl)methyl)-3H-imidazo[4,5-b]pyridine-6-carbonitrile

HRID 1848132Notes

Reaction equation

HRID 1848132 reaction equation
Br[C:2]1[CH:3]=[C:4]2[N:10]=[CH:9][N:8]([CH2:11][C:12]3[CH:28]=[CH:27][C:15]4[N:16]=[C:17]([NH:19][C@@H:20]5[CH2:25][CH2:24][CH2:23][CH2:22][C@H:21]5[OH:26])[O:18][C:14]=4[CH:13]=3)[C:5]2=[N:6][CH:7]=1.O.[CH3:30][N:31](C=O)C>[C-]#N.[C-]#N.[Zn+2].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].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.[Fe+2]>[OH:26][C@@H:21]1[CH2:22][CH2:23][CH2:24][CH2:25][C@H:20]1[NH:19][C:17]1[O:18][C:14]2[CH:13]=[C:12]([CH2:11][N:8]3[C:5]4=[N:6][CH:7]=[C:2]([C:30]#[N:31])[CH:3]=[C:4]4[N:10]=[CH:9]3)[CH:28]=[CH:27][C:15]=2[N:16]=1

Participants

7

Reactant 3

HCID 962WaterHCID 6228DimethylformamideHCID 71549859(1R,2R)-2-((6-((6-bromo-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]oxazol-2-yl)amino)cyclohexanol

Product 1

HCID 866811013-((2-(((1R,2R)-2-hydroxycyclohexyl)amino)benzo[d]oxazol-6-yl)methyl)-3H-imidazo[4,5-b]pyridine-6-carbonitrileYield 25.8%

Reagents, catalysts & solvents 3

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)CatalystHCID 9811564Bis(dibenzylideneacetone)palladiumCatalyst

Conditions

Temperature
100 °C

Procedure

A mixture of (1R,2R)-2-((6-((6-bromo-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]oxazol-2-yl)amino)cyclohexanol (276 mg, 0.62 mmol), Zn(CN)2 (110 mg, 0.94 mmol), Pd2(dba)3 (57 mg, 0.062 mmol) and dppf (68.8 mg, 0.124 mmol) in DMF (6 mL) was stirred at 100° C. for 2 h. The reaction mixture was cooled to rt, poured into water (100 mL) and extracted with ethyl acetate (100 mL×2). The combined organic layers were washed with water and brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by silica gel chromatography eluting with 15:1 DCM/MeOH to give 3-((2-(((1R,2R)-2-hydroxycyclohexyl)amino)benzo[d]oxazol-6-yl)methyl)-3H-imidazo[4,5-b]pyridine-6-carbonitrile as a light yellow solid (62 mg, 25.8%). 1H NMR (300 MHz, DMSO-d6) δ 8.85 (s, 1H), 8.83 (d, J=1.5 Hz, 1H), 8.70 (s, 1H), 7.81 (d, J=7.8 Hz, 1H), 7.41 (s, 1H), 7.14 (m, 2H), 5.54 (s, 2H), 4.68 (d, J=4.8 Hz, 1H), 3.34 (br s, 2H), 1.91 (br s, 2H), 1.62 (br s, 2H), 1.22 (br, 4H). LCMS (ESI) m/z 389 (M+H)+.

Workup

  1. temperatureThe reaction mixture was cooled to rt
  2. extractionextracted with ethyl acetate (100 mL×2)
  3. washThe combined organic layers were washed with water and brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by silica gel chromatography
  8. washeluting with 15:1 DCM/MeOH

Sources & evidence

ORD record
ord-9934456ad094415797e1b0914f0457f6
Source dataset
uspto-grants-2015_02
Patent number
US08952058B2

Reaction notes

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