Cesium carbonate → HCID 24781341, compound

HRID 1024647Notes

Reaction equation

HRID 1024647 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:13](=[O:14])[C:12]3[CH:15]=[N:16][N:17]([C:18]4[CH:19]=[C:20]([NH:24][S:25]([CH3:28])(=[O:27])=[O:26])[CH:21]=[CH:22][CH:23]=4)[C:11]=3[N:10]=[C:9]2[C:29]2[CH:34]=[CH:33][C:32](B3OC(C)(C)C(C)(C)O3)=[CH:31][CH:30]=2)=[CH:4][CH:3]=1.I[C:45]1[CH:50]=[N:49][CH:48]=[CH:47][N:46]=1.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C)C=O.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.Cl[Pd]Cl.[Fe+2]>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([N:8]2[C:13](=[O:14])[C:12]3[CH:15]=[N:16][N:17]([C:18]4[CH:19]=[C:20]([NH:24][S:25]([CH3:28])(=[O:27])=[O:26])[CH:21]=[CH:22][CH:23]=4)[C:11]=3[N:10]=[C:9]2[C:29]2[CH:30]=[CH:31][C:32]([C:45]3[CH:50]=[N:49][CH:48]=[CH:47][N:46]=3)=[CH:33][CH:34]=2)=[CH:6][CH:7]=1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 642841IodopyrazineHCID 57899358HCID 57899358, compound

Product 1

HCID 24781341HCID 24781341, compound

Reagents, catalysts & solvents 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

A solution of N-(3-{5-(4-chloro-phenyl)-4-oxo-6-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxa-borolan-2-yl)phenyl]-4,5-dihydro-pyrazolo[3,4-d]pyrimidin-1-yl}-phenyl)-methane sulfonamide (prepared as described in example 35, 0.50 g, 0.81 mmol) in N,N-dimethylformamide (20 mL) is degassed with argon for 0.5 h. Then 2-iodopyrazine (0.25 g, 1.21 mmol), cesium carbonate (0.527 g, 1.61 mmol), Pd(dppf)2Cl2 (0.06 g, 0.082 mmol) are added and the resulting solution is degassed with argon for 0.5 h. The reaction mixture is then heated at 100° C. for 3 h. The reaction mixture is cooled to rt and diluted with water and extracted with ethyl acetate (3×). The combined organic layer is washed with brine, dried over Na2SO4, concentrated, and purified by column chromatography to afford N-{3-[5-(4-chloro-phenyl)-4-oxo-6-(4-pyrazin-2-yl-phenyl)-4,5-dihydro-pyrazolo[3,4-d]pyrimidin-1-yl]-phenyl}-methane sulfonamide. 1H NMR (DMSO-d6, 400 MHz) δ 10.15 (br, 1H), 9.26 (d, 1H), 8.71 (d, 1H), 8.62 (d, 1H), 8.52 (s, 1H), 8.06 (m, 3H), 7.82 (m, 1H), 7.60 (m, 2H), 7.52 (m, 1H), 7.40 (m, 4H), 7.18 (m, 1H), 3.02 (s, 3H); LC-MS calculated for C28H20ClN7O3S (M+H+) 570.1, found 570.0.

Workup

  1. customthe resulting solution is degassed with argon for 0.5 h
  2. temperatureThe reaction mixture is cooled to rt
  3. additiondiluted with water
  4. extractionextracted with ethyl acetate (3×)
  5. washThe combined organic layer is washed with brine
  6. dry with materialdried over Na2SO4
  7. concentrationconcentrated
  8. custompurified by column chromatography

Sources & evidence

ORD record
ord-abef2031b79c431ca499f4c4c4252652
Source dataset
uspto-grants-2014_05
Patent number
US08722691B2

Reaction notes

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