Cesium carbonate → HCID 42629845, compound

HRID 1880616Notes

Reaction equation

HRID 1880616 reaction equation
Br.[Cl:2][C:3]1[C:12]([OH:13])=[C:11]([OH:14])[C:10]([Cl:15])=[C:9]2[C:4]=1[CH2:5][CH2:6][NH:7][CH2:8]2.[CH3:16][C:17]1[C:22](/[CH:23]=[CH:24]/[C:25](O)=[O:26])=[CH:21][CH:20]=[C:19]([C:28]([F:31])([F:30])[F:29])[N:18]=1.CCN=C=NCCCN(C)C.Cl.C1C=CC2N(O)N=NC=2C=1.C([O-])([O-])=O.[Cs+].[Cs+]>CN(C1C=CN=CC=1)C.CN(C=O)C.O>[Cl:2][C:3]1[C:12]([OH:13])=[C:11]([OH:14])[C:10]([Cl:15])=[C:9]2[C:4]=1[CH2:5][CH2:6][N:7]([C:25](=[O:26])/[CH:24]=[CH:23]/[C:22]1[C:17]([CH3:16])=[N:18][C:19]([C:28]([F:29])([F:30])[F:31])=[CH:20][CH:21]=1)[CH2:8]2

Participants

9

Reactant 5

HCID 10796Cesium carbonateHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 57808084HCID 57808084, compoundHCID 685081725,8-Dichloro-1,2,3,4-tetrahydroisoquinoline-6,7-diol--hydrogen bromide (1/1)

Product 1

HCID 42629845HCID 42629845, compoundYield 11%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

5,8-Dichloro-1,2,3,4-tetrahydroisoquinoline-6,7-diol hydro bromide (183 mg, 0.58 mmol), (E)-3-(2-methyl-6-(trifluoromethyl)pyridin-3-yl)acrylic acid (140 mg, 0.64 mmol), EDC.HCl (167 mg, 0.87 mmol), HOBt (89 mg, 0.58 mmol), DMAP (147 mg, 1.2 mmol) and Cs2CO3 (391 mg, 1.2 mmol) were suspended in DMF (15 mL) and stirred at rt for 12 h. The reaction mixture was then diluted with water (30 mL) and extracted with EtOAc (3×30 mL). Combined organics were washed with NaHCO3 (2×30 mL, sat. aq.), water (3×30 mL) and brine and dried (MgSO4). After filtration and evaporation the residue was purified by column chromatography (SiO2, CH2Cl2:MeOH 95:5) and was then further purified by size exclusion chromatography (sephadex, CHCl3:MeOH 1:1) to give the title compound (28 mg, 63 μmol, 11%) as a yellow solid.

Workup

  1. extractionextracted with EtOAc (3×30 mL)
  2. washCombined organics were washed with NaHCO3 (2×30 mL, sat. aq.), water (3×30 mL) and brine
  3. dry with materialdried (MgSO4)
  4. filtrationAfter filtration and evaporation the residue
  5. customwas purified by column chromatography (SiO2, CH2Cl2:MeOH 95:5)
  6. customwas then further purified by size exclusion chromatography (sephadex, CHCl3:MeOH 1:1)

Sources & evidence

ORD record
ord-8055999995444c849488fc6fc6192328
Source dataset
uspto-grants-2012_11
Patent number
US08318768B2

Reaction notes

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