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

HRID 1848072Notes

Reaction equation

HRID 1848072 reaction equation
Br[C:2]1[N:7]=[C:6]2[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])[S:18][C:14]=4[CH:13]=3)[CH:9]=[N:10][C:5]2=[CH:4][CH:3]=1.[CH3:29][N:30](C=O)C>[C-]#N.[Zn+2].[C-]#N.C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+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]>[OH:26][C@@H:21]1[CH2:22][CH2:23][CH2:24][CH2:25][C@H:20]1[NH:19][C:17]1[S:18][C:14]2[CH:13]=[C:12]([CH2:11][N:8]3[C:6]4=[N:7][C:2]([C:29]#[N:30])=[CH:3][CH:4]=[C:5]4[N:10]=[CH:9]3)[CH:28]=[CH:27][C:15]=2[N:16]=1

Participants

6

Reactant 2

HCID 6228DimethylformamideHCID 71550847(1R,2R)-2-((6-((5-bromo-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanol

Product 1

HCID 715487383-((2-(((1R,2R)-2-hydroxycyclohexyl)amino)benzo[d]thiazol-6-yl)methyl)-3H-imidazo[4,5-b]pyridine-5-carbonitrileYield 39%

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 stirred mixture of (1R,2R)-2-((6-((5-bromo-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanol (100 mg, 0.218 mmol) from Example 78, zinc cyanide (77 mg, 0.654 mmol), and 1,1′-bis(diphenylphosphino)ferrocene (18 mg, 0.0327 mmol) in anhydrous DMF (2 mL) at rt was purged for 15 min with a stream of argon. To the resulting mixture was added tris(dibenzylideneacetone)dipalladium (18 mg, 0.0218 mmol). The reaction vessel was sealed and the mixture was stirred at 100° C. for 2 h. After cooling to rt, the reaction mixture was purified directly by reverse-phase HPLC using a mixture of water (5% CH3CN, 0.05% HOAc) and CH3CN (0.05% HOAc) as the mobile phase and Varian Pursuit XRs diphenyl column as the stationary phase to afford 3-((2-(((1R,2R)-2-hydroxycyclohexyl)amino)benzo[d]thiazol-6-yl)methyl)-3H-imidazo[4,5-b]pyridine-5-carbonitrile (34 mg, 39%) as a white solid. 1H NMR (300 MHz, DMSO-d6) δ 8.91 (s, 1H), 8.34 (d, J=8.3 Hz, 1H), 8.01 (d, J=7.3 Hz, 1H), 7.92 (d, J=8.1 Hz, 1H), 7.67 (d, J=1.1 Hz, 1H), 7.32 (m, 1H), 7.22 (m, 1H), 5.53 (s, 2H), 4.77 (br s, 1H), 3.51 (m, 1H), 3.30 (m, 1H), 2.03 (m, 1H), 1.85 (m, 1H), 1.65-1.67 (m, 2H), 1.08-1.37 (m, 4H). LCMS (ESI) m/z 405 (M+H)+.

Workup

  1. customwas purged for 15 min with a stream of argon
  2. customThe reaction vessel was sealed
  3. temperatureAfter cooling to rt
  4. customthe reaction mixture was purified directly by reverse-phase
  5. additiona mixture of water (5% CH3CN, 0.05% HOAc) and CH3CN (0.05% HOAc) as the mobile phase and Varian Pursuit XRs diphenyl column as the stationary phase

Sources & evidence

ORD record
ord-5eb641294e8e4660b9c385955be29aad
Source dataset
uspto-grants-2015_02
Patent number
US08952058B2

Reaction notes

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