Cesium carbonate → 8-[5-(3-Methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]-1,4-dioxaspiro[4.5]decane-8-carbonitrile

HRID 410512

Reaction equation

HRID 410512 reaction equation
[CH3:1][C:2]1[CH:3]=[C:4]([NH:17][C:18]2[N:23]=[C:22]([C:24]([F:27])([F:26])[F:25])[CH:21]=[CH:20][N:19]=2)[CH:5]=[C:6](B2OC(C)(C)C(C)(C)O2)[CH:7]=1.Br[C:29]1[S:33][C:32]([C:34]2([C:44]#[N:45])[CH2:43][CH2:42][C:37]3([O:41][CH2:40][CH2:39][O:38]3)[CH2:36][CH2:35]2)=[N:31][CH:30]=1.C(=O)([O-])[O-].[Cs+].[Cs+].CC(C1C=C(C(C)C)C(C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)=C(C(C)C)C=1)C>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]>[CH3:1][C:2]1[CH:7]=[C:6]([C:29]2[S:33][C:32]([C:34]3([C:44]#[N:45])[CH2:43][CH2:42][C:37]4([O:41][CH2:40][CH2:39][O:38]4)[CH2:36][CH2:35]3)=[N:31][CH:30]=2)[CH:5]=[C:4]([NH:17][C:18]2[N:23]=[C:22]([C:24]([F:27])([F:25])[F:26])[CH:21]=[CH:20][N:19]=2)[CH:3]=1

Participants

6

Reactant 4

HCID 10796Cesium carbonateHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 58456089N-(3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-4-(trifluoromethyl)pyrimidin-2-amineHCID 672569798-(5-Bromo-1,3-thiazol-2-yl)-1,4-dioxaspiro[4.5]decane-8-carbonitrile

Product 1

HCID 672617008-[5-(3-Methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]-1,4-dioxaspiro[4.5]decane-8-carbonitrileYield 79.4%

Reagents, catalysts & solvents 1

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalyst

Conditions

Temperature
100 °C

Procedure

N-[3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-4-(trifluoromethyl)pyrimidin-2-amine (1.60 g, 4.22 mmol), 8-(5-bromo-1,3-thiazol-2-yl)-1,4-dioxaspiro[4.5]decane-8-carbonitrile (1.40 g, 4.22 mmol), cesium carbonate (4.12 g, 12.6 mmol), Pd2(dba)3 (193 mg, 0.21 mmol) and X-Phos (201 mg, 0.42 mmol) were added to a flame-dried flask, deoxygenated, and diluted with anhydrous 1,4-dioxane (15 ml) and water (1.5 ml). The resulting dark mixture was heated to 100° C. for 5 h. The reaction mixture was diluted with 1:1 saturated aqueous NaHCO3: brine (100 ml) and extracted with EtOAc (2×85 ml). The organic layers were dried over Na2SO4, filtered and concentrated. The crude dark maroon oil was purified via flash column chromatography (SiO2: 100% Hex to 60:40 Hex:EtOAc) which afforded 8-[5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]-1,4-dioxaspiro[4.5]decane-8-carbonitrile (1.77 g, 3.35 mmol, 79% yield) as an off-white solid. MS ESI: [M+H]+ m/z 502.1. 1H NMR (500 MHz, CD3OD): δ 11.1 (s, 1H), 9.65 (d, 1H, J=4.9 Hz), 8.93 (s, 1H), 8.83 (s, 1H), 8.30 (s, 1H), 8.10 (d, 1H, J=4.9 Hz), 8.02 (s, 1H), 4.73-4.72 (m, 4H), 3.21-3.18 (m, 2H), 3.13 (s, 3H), 3.01-2.97 (m, 2H), 2.69-2.61 (m, 4H). rhSYK activity=+++

Workup

  1. customdeoxygenated
  2. additiondiluted with anhydrous 1,4-dioxane (15 ml) and water (1.5 ml)
  3. additionThe reaction mixture was diluted with 1:1 saturated aqueous NaHCO3
  4. extractionbrine (100 ml) and extracted with EtOAc (2×85 ml)
  5. dry with materialThe organic layers were dried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe crude dark maroon oil was purified via flash column chromatography (SiO2: 100% Hex to 60:40 Hex:EtOAc) which

Sources & evidence

ORD record
ord-0d21b72e63e941f88ce26355a4a7ceaf
Source dataset
uspto-grants-2014_06
Patent number
US08759366B2

Linked notes

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