Water → HCID 58577747, compound

HRID 1044303Notes

Reaction equation

[N+:1]([C:4]1[CH:9]=[CH:8][C:7]([NH:10][C:11]2[N:19]([CH2:20][CH2:21]O)[C:14]3=[N:15][CH:16]=[CH:17][CH:18]=[C:13]3[N:12]=2)=[CH:6][CH:5]=1)([O-:3])=[O:2].C(N(CC)CC)C.CS(Cl)(=O)=O.O>C1COCC1>[N+:1]([C:4]1[CH:9]=[CH:8][C:7]([N:10]2[C:11]3=[N:12][C:13]4[C:14](=[N:15][CH:16]=[CH:17][CH:18]=4)[N:19]3[CH2:20][CH2:21]2)=[CH:6][CH:5]=1)([O-:3])=[O:2]

Participants

Conditions

Temperature: 0 °C

Procedure

To a solution of 2-{2-[(4-nitrophenyl)amino]-3H-imidazo[4,5-b]pyridin-3-yl}ethanol (2.2 g) and triethylamine (10 mL) in THF (100 mL) was added methanesulfonyl chloride (1.1 mL) at 0° C., and the mixture was stirred at 0° C. for 2 h. The mixture was poured into water and extracted with AcOEt. The organic layer was washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure. A mixture of the residue and potassium carbonate (3.1 g) in NMP (30 mL) was stirred at 100° C. overnight. After cooling to room temperature, the mixture was diluted with water. The formed crystals were collected by filtration to give the title compound (1.7 g).

Workup

extractionextracted with AcOEt
washThe organic layer was washed with brine
dry with materialdried over Na2SO4
filtrationfiltered
concentrationconcentrated under reduced pressure
additionA mixture of the residue and potassium carbonate (3.1 g) in NMP (30 mL)
stirringwas stirred at 100° C. overnight
temperatureAfter cooling to room temperature
additionthe mixture was diluted with water
filtrationThe formed crystals were collected by filtration

Sources & evidence

ORD record: ord-fbeb5bc412b241f3849729617e45614a
Source dataset: uspto-grants-2013_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08563575B2

Reaction notes

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