Sodium Carbonate → (1R,2R)-2-((6-((6-(pyridin-3-yl)-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanol

HRID 1848004Notes

Reaction equation

HRID 1848004 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])[S:18][C:14]=4[CH:13]=3)[C:5]2=[N:6][CH:7]=1.[N:29]1[CH:34]=[CH:33][CH:32]=[C:31](B(O)O)[CH:30]=1.C([O-])([O-])=O.[Na+].[Na+]>C1(C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)[Pd][P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.COCCOC>[N:29]1[CH:34]=[CH:33][CH:32]=[C:31]([C:2]2[CH:3]=[C:4]3[N:10]=[CH:9][N:8]([CH2:11][C:12]4[CH:28]=[CH:27][C:15]5[N:16]=[C:17]([NH:19][C@@H:20]6[CH2:25][CH2:24][CH2:23][CH2:22][C@H:21]6[OH:26])[S:18][C:14]=5[CH:13]=4)[C:5]3=[N:6][CH:7]=2)[CH:30]=1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 27343783-Pyridinylboronic acidHCID 86681028(1R,2R)-2-((6-((6-bromo-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanol

Product 1

HCID 71550131(1R,2R)-2-((6-((6-(pyridin-3-yl)-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanolYield 31.3%

Reagents, catalysts & solvents 2

HCID 178419050HCID 178419050, compoundCatalystHCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
100 °C

Procedure

A stirred mixture of (1R,2R)-2-((6-((6-bromo-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanol (80 mg, 0.175 mmol) from Example 29, pyridine-3-ylboronic acid (43 mg, 0.350 mmol), 2M aq Na2CO3 (400 μL, 0.40 mmol), and anhydrous DME (1.5 mL) was degassed under argon for 15 min. Bis(triphenylphosphine)palladium (II) dichloride (12 mg, 0.0171 mmol) was added and the reaction vessel was sealed and the mixture was heated at 100° C. for 15 h. After cooling to rt, the 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 (1R,2R)-2-((6-((6-(pyridin-3-yl)-3H-imidazo[4,5-b]pyridin-3-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanol (25 mg, 31%) as a white solid. 1H NMR (300 MHz, DMSO-d6) δ 8.99 (br s, 1H), 8.66-8.77 (m, 2H), 8.60 (br s, 1H), 8.46 (s, 1H), 8.19 (d, J=7.9 Hz, 1H), 8.00 (d, J=7.3 Hz, 1H), 7.69 (s, 1H), 7.52 (dd, J=4.7, 7.7 Hz, 1H), 7.21-7.34 (m, 2H), 5.53 (s, 2H), 4.77 (br s, 1H), 3.51 (m, 1H), 3.35 (m, 1H), 2.03 (m, 1H), 1.87 (m, 1H), 1.56-1.66 (m, 2H), 1.11-1.34 (m, 4H). LCMS (ESI) m/z 457 (M+H)+.

Workup

  1. customwas degassed under argon for 15 min
  2. customthe reaction vessel was sealed
  3. temperatureAfter cooling to rt
  4. customthe 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-b95af96beae242c58267ef71dc9ff1c9
Source dataset
uspto-grants-2015_02
Patent number
US08952058B2

Reaction notes

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