Cesium carbonate → 4-(5-(2-methyl-1H-benzo[d]imidazol-1-yl)-2-((3-morpholinoazetidin-1-yl)methyl)thiazolo[4,5-d]pyrimidin-7-yl)morpholine

HRID 1945824Notes

Reaction equation

HRID 1945824 reaction equation
Cl[C:2]1[N:3]=[C:4]([N:22]2[CH2:27][CH2:26][O:25][CH2:24][CH2:23]2)[C:5]2[S:10][C:9]([CH2:11][N:12]3[CH2:15][CH:14]([N:16]4[CH2:21][CH2:20][O:19][CH2:18][CH2:17]4)[CH2:13]3)=[N:8][C:6]=2[N:7]=1.[CH3:28][C:29]1[NH:33][C:32]2[CH:34]=[CH:35][CH:36]=[CH:37][C:31]=2[N:30]=1.CC(C1C=C(C(C)C)C(C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)=C(C(C)C)C=1)C.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.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]>[CH3:28][C:29]1[N:33]([C:2]2[N:3]=[C:4]([N:22]3[CH2:23][CH2:24][O:25][CH2:26][CH2:27]3)[C:5]3[S:10][C:9]([CH2:11][N:12]4[CH2:15][CH:14]([N:16]5[CH2:21][CH2:20][O:19][CH2:18][CH2:17]5)[CH2:13]4)=[N:8][C:6]=3[N:7]=2)[C:32]2[CH:34]=[CH:35][CH:36]=[CH:37][C:31]=2[N:30]=1

Participants

7

Reactant 4

HCID 10796Cesium carbonateHCID 119842-MethylbenzimidazoleHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 596060455-Chloro-7-morpholin-4-yl-2-(3-morpholin-4-yl-azetidin-1-ylmethyl)-thiazolo[4,5-d]pyrimidine

Product 1

HCID 596059564-(5-(2-methyl-1H-benzo[d]imidazol-1-yl)-2-((3-morpholinoazetidin-1-yl)methyl)thiazolo[4,5-d]pyrimidin-7-yl)morpholineYield 70.7%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 312751,4-DioxaneSolvent

Procedure

A mixture of 5-chloro-7-morpholin-4-yl-2-(3-morpholin-4-yl-azetidin-1-ylmethyl)thiazolo[4,5-d]pyrimidine (50 mg, 0.12 mmol), 2-methyl-1H-benzoimidazole (18 mg, 0.13 mmol), Pd2(dba)3 (5.5 mg, 0.006 mmol), XPhos (5.7 mg, 0.02 mmol) and cesium carbonate (78 mg, 0.24 mmol) in 1,4-dioxane (1.5 mL) was purged with argon gas for 15 min. The resulting reaction mixture was irradiated with microwaves at 145° C. for 30 min. The crude residue was loaded on an Isolute® SCX-2 cartridge (5 g). The cartridge was washed with DCM/MeOH and the desired product was subsequently eluted using a mixture of 2M NH3 in MeOH and DCM. The resulting residue was further purified by column chromatography (Si—PCC, 2 M NH3 in MeOH:DCM: gradient 0:100 to 4:96). The solvents were reduced in vacuo to afford 256 as a brown solid (43 mg, 70%). LCMS (Method G): RT 5.52 min, [M+H]+ 507. 1H NMR (400 MHz, CDCl3): δ 8.22-8.21 (1 H, m), 7.71-7.70 (1 H, m), 7.30-7.27 (2 H, m), 4.18 (2 H, s), 4.03 (4 H, t, J=4.80 Hz), 3.89 (4 H, t, J=4.80 Hz), 3.76-3.72 (6 H, m), 3.27 (2 H, m), 3.15 (1 H, m), 3.00 (3 H, s), 2.37 (4 H, br s)

Workup

  1. customwas purged with argon gas for 15 min
  2. customThe resulting reaction mixture
  3. customwas irradiated with microwaves at 145° C. for 30 min
  4. washThe cartridge was washed with DCM/MeOH
  5. washthe desired product was subsequently eluted
  6. additiona mixture of 2M NH3 in MeOH and DCM
  7. customThe resulting residue was further purified by column chromatography (Si—PCC, 2 M NH3 in MeOH:DCM: gradient 0:100 to 4:96)

Sources & evidence

ORD record
ord-ce50baa7038b464ea9f51fb4694c38b8
Source dataset
uspto-grants-2013_03
Patent number
US08394796B2

Reaction notes

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