1-Aminohydantoin → 1-[(E)-1-[3-[difluoro(quinolin-6-yl)methyl]-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]ethylideneamino]imidazolidine-2,4-dione

HRID 456099Notes

Reaction equation

HRID 456099 reaction equation
[F:1][C:2]([F:25])([C:15]1[CH:16]=[C:17]2[C:22](=[CH:23][CH:24]=1)[N:21]=[CH:20][CH:19]=[CH:18]2)[C:3]1[N:7]2[N:8]=[C:9]([C:12](=O)[CH3:13])[CH:10]=[CH:11][C:6]2=[N:5][N:4]=1.[NH2:26][N:27]1[CH2:31][C:30](=[O:32])[NH:29][C:28]1=[O:33]>CO>[F:1][C:2]([F:25])([C:15]1[CH:16]=[C:17]2[C:22](=[CH:23][CH:24]=1)[N:21]=[CH:20][CH:19]=[CH:18]2)[C:3]1[N:7]2[N:8]=[C:9](/[C:12](=[N:26]/[N:27]3[CH2:31][C:30](=[O:32])[NH:29][C:28]3=[O:33])/[CH3:13])[CH:10]=[CH:11][C:6]2=[N:5][N:4]=1

Participants

4

Reactant 2

HCID 728231-AminohydantoinHCID 581904681-(3-(Difluoro(quinolin-6-yl)methyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)ethanone

Product 1

HCID 716998961-[(E)-1-[3-[difluoro(quinolin-6-yl)methyl]-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]ethylideneamino]imidazolidine-2,4-dioneYield 23.7%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A solution of 1-(3-(difluoro(quinolin-6-yl)methyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)ethanone (20 mg, 0.059 mmol) and 1-aminoimidazolidine-2,4-dione (13.6 mg, 0.12 mmol) was stirred in MeOH at room temperature over a weekend. Light yellow solid was filtered to give the title compound (6 mg, 0.014 mmol). The filtrate was purified on HPLC (acidic with 0.05% TFA) to give the title compound as TFA salt (8 mg, 0.0145 mmol). The combined yield was 48%. 1H-NMR (400 MHz, DMSO-d6) δ ppm 11.46 (s, 1H), 9.02 (d, 1H), 8.55 (d, 1H), 8.48 (s, 1H), 8.46 (s, 1H), 8.18 (d, 1H), 8.0 (s, 1H), 7.98 (s, 1H), 7.65 (d, 1H), 4.54 (s, 2H), 2.24 (s, 3H). LCMS (method B): [MH]+=437.1, tR=2.06 min.

Workup

  1. filtrationLight yellow solid was filtered

Sources & evidence

ORD record
ord-8d7755e77f56488fbbc965803727bbac
Source dataset
uspto-grants-2013_07
Patent number
US08497368B2

Reaction notes

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