Methanol → 9-(3-bromo-4-fluorophenyl)-2-methyl-2,3,5,9-tetrahydropyrano[3,4-b]pyrrolo[3,4-e]pyridine-1,8(4H,7H)-dione

HRID 635984Notes

Reaction equation

HRID 635984 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([CH:9]2[C:14]([C:15]([O:17]C)=O)=[C:13]([CH2:19]Br)[NH:12][C:11]3[CH2:21][O:22][CH2:23][C:24](=[O:25])[C:10]2=3)[CH:5]=[CH:6][C:7]=1[F:8].[CH3:26][NH2:27].CO>>[Br:1][C:2]1[CH:3]=[C:4]([CH:9]2[C:14]3[C:15](=[O:17])[N:27]([CH3:26])[CH2:19][C:13]=3[NH:12][C:11]3[CH2:21][O:22][CH2:23][C:24](=[O:25])[C:10]2=3)[CH:5]=[CH:6][C:7]=1[F:8]

Participants

4

Reactant 3

HCID 887MethanolHCID 6329MethylamineHCID 11328992methyl 4-(3-bromo-4-fluorophenyl)-2-(bromomethyl)-5-oxo-4,5,6,8-tetrahydro-1H-pyrano[3,4-b]pyridine-3-carboxylate

Product 1

HCID 98219069-(3-bromo-4-fluorophenyl)-2-methyl-2,3,5,9-tetrahydropyrano[3,4-b]pyrrolo[3,4-e]pyridine-1,8(4H,7H)-dione

Procedure

A solution of the product from Example 25B (0.16 g, 0.34 mmol) and 2M methyl amine in methanol (3.5 mL, 7.0 mmol) was stirred at ambient temperature for 16 hours and concentrated. Purification of the residue on silica gel (5% and then 10% methanol in methylene chloride) provided an oil which was crystallized from ethanol, collected by filtration and dried to yield the title compound (0.016 g) as a white solid.

Workup

  1. concentrationconcentrated
  2. customPurification of the residue on silica gel (5%
  3. custom10% methanol in methylene chloride) provided an oil which
  4. customwas crystallized from ethanol
  5. filtrationcollected by filtration
  6. customdried

Sources & evidence

ORD record
ord-83cdde836ff04624b4434d0891c952e8
Source dataset
uspto-grants-2001_02
Patent number
US06191140B1

Reaction notes

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