Cesium carbonate → 2,6-dihydro-2-methyl-4-(2-methylpropyl)-6-[3,4,5-trimethoxyphenyl]methyl-1H-pyrrolo[3,4-d]pyridazin-1-one

HRID 1835149Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1835149
[CH3:1][N:2]1[C:7](=[O:8])[C:6]2=[CH:9][NH:10][CH:11]=[C:5]2[C:4]([CH2:12][CH:13]([CH3:15])[CH3:14])=[N:3]1.[CH3:16][O:17][C:18]1[CH:19]=[C:20]([CH:23]=[C:24]([O:28][CH3:29])[C:25]=1[O:26][CH3:27])[CH2:21]Cl.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C)C=O.Cl>[CH3:1][N:2]1[C:7](=[O:8])[C:6]2=[CH:9][N:10]([CH2:21][C:20]3[CH:23]=[C:24]([O:28][CH3:29])[C:25]([O:26][CH3:27])=[C:18]([O:17][CH3:16])[CH:19]=3)[CH:11]=[C:5]2[C:4]([CH2:12][CH:13]([CH3:15])[CH3:14])=[N:3]1

Komponenten

6

Edukt 3

HCID 10796Cesium carbonateHCID 774485-(Chloromethyl)-1,2,3-trimethoxybenzeneHCID 1355247842-methyl-4-(2-methylpropyl)-1H,2H,6H-pyrrolo[3,4-d]pyridazin-1-one

Produkt 1

HCID 235032722,6-dihydro-2-methyl-4-(2-methylpropyl)-6-[3,4,5-trimethoxyphenyl]methyl-1H-pyrrolo[3,4-d]pyridazin-1-one

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 313Hydrochloric AcidLösungsmittelHCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

A mixture of 2,6-dihydro-2-methyl-4(2-methylpropyl)-1H-pyrrolo[3,4-d]pyridazin-1-one (Example 18 step a, 0.031 g), 3,4,5-trimethoxybenzyl chloride (0.038 g), and cesium carbonate (0.090 g) in dry dimethyl formamide (0.8 ml) was stirred for 16 hours, and then diluted with dilute hydrochloric acid. The mixture was extracted with ethyl acetate, which was washed with brine, dried, and evaporated to a solid. The solid was purified by chromatography on silica (dichloromethane/ethanol 9:1) to give 2,6-dihydro-2-methyl-4-(2-methylpropyl)-6-[3,4,5-trimethoxyphenyl]methyl-1H-pyrrolo[3,4-d]pyridazin-1-one (0.033 g).

Aufarbeitung

  1. extractionThe mixture was extracted with ethyl acetate, which
  2. washwas washed with brine
  3. customdried
  4. customevaporated to a solid
  5. customThe solid was purified by chromatography on silica (dichloromethane/ethanol 9:1)

Quellen und Nachweise

ORD-Eintrag
ord-b61d3c651350422fbcff31dd2e27ea09
Quelldatensatz
uspto-grants-2004_08
Patentnummer
US06770646B2

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