Cesium carbonate → HCID 86679692, compound

HRID 2367677Notes

Reaction equation

HRID 2367677 reaction equation
Br[C:2]1[CH:3]=[C:4]([CH2:8][N:9]([CH3:11])[CH3:10])[CH:5]=[N:6][CH:7]=1.[CH3:12][O:13][C:14]1[CH:21]=[CH:20][C:17]([CH2:18][NH2:19])=[CH:16][CH:15]=1.C(=O)([O-])[O-].[Cs+].[Cs+].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2>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]>[CH3:10][N:9]([CH2:8][C:4]1[CH:3]=[C:2]([NH:19][CH2:18][C:17]2[CH:20]=[CH:21][C:14]([O:13][CH3:12])=[CH:15][CH:16]=2)[CH:7]=[N:6][CH:5]=1)[CH3:11]

Participants

6

Reactant 4

HCID 10796Cesium carbonateHCID 754524-MethoxybenzylamineHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 116656711-(5-Bromopyridin-3-yl)-N,N-dimethylmethanamine

Product 1

HCID 86679692HCID 86679692, compoundYield 42.1%

Reagents, catalysts & solvents 1

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalyst

Conditions

Temperature
130 °C

Procedure

In a 25 mL microwave vessel, 1-(5-bromopyridin-3-yl)-N,N-dimethylmethanamine (LIV) (1.27 g, 5.92 mmol), 4-methoxybenzylamine (LV) (0.77 mL, 5.92 mmol), cesium carbonate (2.70 g, 8.29 mmol) and xanthphos (0.17 g, 0.30 mmol) were suspended in xylenes (12.0 mL) The solvent was degassed, and tris(dibenzylideneacetone)dipalladium(0) (0.27 g, 0.30 mmol) was added. The vessel was sealed, and the reaction was heated to 130° C. for 5 h in a microwave reactor. The solvent was decanted away from the solid material and concentrated to a residue. The residue was purified by silica gel chromatography using a 40 g Thomson normal-phase silica gel cartridge (100% CHCl3→3:97 MeOH[7N NH3]:CHCl3) to afford 5-((dimethylamino)methyl)-N-(4-methoxybenzyl)pyridin-3-amine (LVI) (0.68 g, 2.49 mmol, 42% yield) as a yellow solid. 1H NMR (DMSO-d6) δ ppm 7.84 (d, J=3 Hz, 1H), 7.64 (d, J=2 Hz, 1H), 7.27 (d, J=11 Hz, 2H), 6.88 (d, J=11 Hz, 2H), 6.83-6.82 (m, 1H), 6.35 (t, J=8 Hz, 1H), 4.20 (d, J=8 Hz, 2H), 3.72 (s, 3H), 3.24 (s, 2H), 2.08 (s, 6H); ESIMS found for C16H21N3O m/z 272 (M+H).

Workup

  1. customThe solvent was degassed
  2. customThe vessel was sealed
  3. customThe solvent was decanted away from the solid material
  4. concentrationconcentrated to a residue
  5. customThe residue was purified by silica gel chromatography

Sources & evidence

ORD record
ord-910de1617c45425a99fdbc9c5d61d7d2
Source dataset
uspto-grants-2014_04
Patent number
US08697887B2

Reaction notes

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