Cesium carbonate → HCID 68157107, compound

HRID 243497Notes

Reaction equation

HRID 243497 reaction equation
[NH2:1][C:2]1[C:7]([C:8]#[N:9])=[C:6]([NH:10][C@H:11]([C:13]2[N:17]([CH3:18])[C:16]3[C:19](Br)=[CH:20][CH:21]=[CH:22][C:15]=3[N:14]=2)[CH3:12])[N:5]=[CH:4][N:3]=1.[C:24]([C:26]1[CH:31]=[CH:30][C:29](B(O)O)=[CH:28][CH:27]=1)#[N:25].C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[NH2:1][C:2]1[C:7]([C:8]#[N:9])=[C:6]([NH:10][C@H:11]([C:13]2[N:17]([CH3:18])[C:16]3[C:19]([C:29]4[CH:30]=[CH:31][C:26]([C:24]#[N:25])=[CH:27][CH:28]=4)=[CH:20][CH:21]=[CH:22][C:15]=3[N:14]=2)[CH3:12])[N:5]=[CH:4][N:3]=1

Participants

7

Reactant 3

HCID 10796Cesium carbonateHCID 27343264-Cyanophenylboronic acidHCID 68157965HCID 68157965, compound

Product 1

HCID 68157107HCID 68157107, compoundYield 34%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of 4-amino-6-[(S)-1-(7-bromo-1-methyl-1H-benzoimidazol-2-yl)ethylamino]pyrimidine-5-carbonitrile (100 mg, 0.27 mmol), 4-cyanobenzeneboronic acid (51 mg, 0.35 mmol), Pd(PPh3)4 (31 mg, 0.03 mmol) and Cs2CO3 (175 mg, 0.54 mmol) in dioxane (3 mL) and H2O (1.5 mL) was heated for 30 min by microwave irradiation at 140° C. The reaction solution was loaded onto an Isolute® SCX-2 cartridge. The cartridge was washed with MeOH, followed by 2M NH3 in MeOH. The basic fractions were combined and concentrated in vacuo. The resulting residue was dissolved in DCM and the fine precipitate filtered and washed with DCM. The filtrate was concentrated in vacuo and purified by column chromatography (Si—PPC, gradient 0-10% 2M NH3 in MeOH/DCM) to afford 423 as a white solid (36 mg, 34%). LCMS (Method K): RT 2.30 min [M+H]+ 395. 1H NMR (DMSO-d6, 400 MHz): δ 8.04 (1H, s), 7.96-7.94 (2H, m), 7.72-7.67 (4H, m), 7.32 (2H, bs), 7.27, (1H, dd, J=8.0, 7.5 Hz), 7.07 (1H, dd, J=7.5, 1.0 Hz), 5.66 (1H, dq, J=7.0, 7.0 Hz), 3.28 (3H, s), 1.60 (3H, d, J=7.0 Hz)

Workup

  1. washThe cartridge was washed with MeOH
  2. concentrationconcentrated in vacuo
  3. dissolutionThe resulting residue was dissolved in DCM
  4. filtrationthe fine precipitate filtered
  5. washwashed with DCM
  6. concentrationThe filtrate was concentrated in vacuo
  7. custompurified by column chromatography (Si—PPC, gradient 0-10% 2M NH3 in MeOH/DCM)

Sources & evidence

ORD record
ord-7d261dd66eb44a62ada9982a70f615cd
Source dataset
uspto-grants-2014_02
Patent number
US08653089B2

Reaction notes

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