6-chloro-N-{4-[(1-methyl-1H-benzimidazol-2-yl)oxy]phenyl}-5-nitropyrimidin-4-amine → N4-{4-[(1-methyl-1H-benzimidazol-2-yl)oxy]phenyl}pyrimidine-4,5-diamine

HRID 1430021Notes

Reaction equation

HRID 1430021 reaction equation
Cl[C:2]1[N:7]=[CH:6][N:5]=[C:4]([NH:8][C:9]2[CH:14]=[CH:13][C:12]([O:15][C:16]3[N:20]([CH3:21])[C:19]4[CH:22]=[CH:23][CH:24]=[CH:25][C:18]=4[N:17]=3)=[CH:11][CH:10]=2)[C:3]=1[N+:26]([O-])=O>[Pd].CO.C1COCC1>[CH3:21][N:20]1[C:19]2[CH:22]=[CH:23][CH:24]=[CH:25][C:18]=2[N:17]=[C:16]1[O:15][C:12]1[CH:13]=[CH:14][C:9]([NH:8][C:4]2[C:3]([NH2:26])=[CH:2][N:7]=[CH:6][N:5]=2)=[CH:10][CH:11]=1

Participants

5

Reactant 1

HCID 585776716-chloro-N-{4-[(1-methyl-1H-benzimidazol-2-yl)oxy]phenyl}-5-nitropyrimidin-4-amine

Product 1

HCID 58577325N4-{4-[(1-methyl-1H-benzimidazol-2-yl)oxy]phenyl}pyrimidine-4,5-diamineYield 39.8%

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of 6-chloro-N-{4-[(1-methyl-1H-benzimidazol-2-yl)oxy]phenyl}-5-nitropyrimidin-4-amine (240 mg) and 10% palladium on carbon (160 mg) in MeOH (10 mL) and THF (10 mL) was hydrogenated under balloon pressure at room temperature overnight. To the mixture was added TEA (0.50 mL). The catalyst was removed by filtration and the filtrate was concentrated in vacuo. The residue was purified by column chromatography (silica gel, eluted with 0%-5% MeOH in AcOEt) to give N4-{4-[(1-methyl-1H-benzimidazol-2-yl)oxy]phenyl}pyrimidine-4,5-diamine (80 mg) as a colorless solid.

Workup

  1. customThe catalyst was removed by filtration
  2. concentrationthe filtrate was concentrated in vacuo
  3. customThe residue was purified by column chromatography (silica gel, eluted with 0%-5% MeOH in AcOEt)

Sources & evidence

ORD record
ord-0c70efcba12e40d2a77d56f527bfe1cc
Source dataset
uspto-grants-2015_01
Patent number
US08940758B2

Reaction notes

Loading…