Methanol → methyl-[4-(1-methylpiperidin-4-yloxy)-2-phenyl-9,10-dihydro-4H-3,10a-diaza-benzo[f]azulen-8-yl]-amine

HRID 1773921Notes

Reaction equation

HRID 1773921 reaction equation
Br[C:2]1[C:15]2[CH2:14][CH2:13][N:12]3[C:8](=[N:9][C:10]([C:16]4[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=4)=[CH:11]3)[CH:7]([O:22][CH:23]3[CH2:28][CH2:27][N:26]([CH3:29])[CH2:25][CH2:24]3)[C:6]=2[CH:5]=[CH:4][CH:3]=1.[CH3:30][NH2:31].CO.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C)C=O.[Cu]I>[CH3:30][NH:31][C:2]1[C:15]2[CH2:14][CH2:13][N:12]3[C:8](=[N:9][C:10]([C:16]4[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=4)=[CH:11]3)[CH:7]([O:22][CH:23]3[CH2:28][CH2:27][N:26]([CH3:29])[CH2:25][CH2:24]3)[C:6]=2[CH:5]=[CH:4][CH:3]=1

Participants

7

Reactant 4

HCID 887MethanolHCID 6329MethylamineHCID 10796Cesium carbonateHCID 867040028-bromo-4-(1-methyl-piperidin-4-yloxy)-2-phenyl-9,10-dihydro-4H-3,10a-diaza-benzo[f]azulene

Product 1

HCID 86704006methyl-[4-(1-methylpiperidin-4-yloxy)-2-phenyl-9,10-dihydro-4H-3,10a-diaza-benzo[f]azulen-8-yl]-amine

Reagents, catalysts & solvents 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

To a solution of 8-bromo-4-(1-methyl-piperidin-4-yloxy)-2-phenyl-9,10-dihydro-4H-3,10a-diaza-benzo[f]azulene (example 231) (276 mg, 0, 55 mmole) in dimethylformamide (5 mL) in a screw-capped vial are added a 3M solution of methylamine in methanol (2.8 mL, 5.5 mmoles), copper(I) iodide (100 mg, 0, 52 mmole) and cesium carbonate (250 mg, 0.77 mmole). The vial is evacuated and filled with argon. The reaction mixture is stirred at 100° C. for 36 hours. Water and ammonia are added to the reaction mixture, and the aqueous phase is extracted three times with dichloromethane. Pooled organic extracts are dried over magnesium sulphate, filtered and the solvent is removed under reduced pressure. The residue is purified by preparative HPLC-MS (Waters AutoPurification HPLC/MS System, Sunfire Prep C18 5 μm OBD 30×150 mm column, eluents: water/0.1% formic acid (A) and acetonitrile/0.1% formic acid (B), focus gradient from 11% (B) to 21% (B) in 10 minutes) to afford methyl-[4-(1-methylpiperidin-4-yloxy)-2-phenyl-9,10-dihydro-4H-3,10a-diaza-benzo[f]azulen-8-yl]-amine melting at 189° C.

Workup

  1. customThe vial is evacuated
  2. additionfilled with argon
  3. additionWater and ammonia are added to the reaction mixture
  4. extractionthe aqueous phase is extracted three times with dichloromethane
  5. dry with materialPooled organic extracts are dried over magnesium sulphate
  6. filtrationfiltered
  7. customthe solvent is removed under reduced pressure
  8. customThe residue is purified by preparative HPLC-MS (Waters AutoPurification HPLC/MS System, Sunfire Prep C18 5 μm OBD 30×150 mm column, eluents: water/0.1% formic acid (A) and acetonitrile/0.1% formic acid (B), focus gradient from 11% (B) to 21% (B) in 10 minutes)

Sources & evidence

ORD record
ord-84cb9168cb2d439ba7f8a3d3b06be643
Source dataset
uspto-grants-2016_02
Patent number
US09255101B2

Reaction notes

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