Sodium hydride → 5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid ((R)-2-dimethylcarbamoylmethyl-3-oxo-isoxazolidin-4-yl)-amide

HRID 2245271Notes

Reaction equation

HRID 2245271 reaction equation
[O:1]=[C:2]1[C@H:6]([NH:7][C:8]([C:10]2[C:14]([CH3:15])=[C:13](/[CH:16]=[C:17]3\[C:18](=[O:27])[NH:19][C:20]4[C:25]\3=[CH:24][C:23]([F:26])=[CH:22][CH:21]=4)[NH:12][C:11]=2[CH3:28])=[O:9])[CH2:5][O:4][NH:3]1.[H-].[Na+].Br[CH2:32][C:33]([N:35]([CH3:37])[CH3:36])=[O:34]>>[CH3:36][N:35]([CH3:37])[C:33]([CH2:32][N:3]1[C:2](=[O:1])[C@H:6]([NH:7][C:8]([C:10]2[C:14]([CH3:15])=[C:13](/[CH:16]=[C:17]3\[C:18](=[O:27])[NH:19][C:20]4[C:25]\3=[CH:24][C:23]([F:26])=[CH:22][CH:21]=4)[NH:12][C:11]=2[CH3:28])=[O:9])[CH2:5][O:4]1)=[O:34]

Participants

4

Reactant 3

HCID 24758Sodium hydrideHCID 2255442-Bromo-N,N-dimethylacetamideHCID 584325545-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid ((R)-3-oxo-isoxazolidin-4-yl)-amide

Product 1

HCID 592160095-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid ((R)-2-dimethylcarbamoylmethyl-3-oxo-isoxazolidin-4-yl)-amideYield 13.6%

Procedure

To the solution of 42b (1.0 eq.) cooled on ice bath was added NaH (4.0 or 1.5 eq.). The resulting mixture was stirred for an hour and was then added 2-bromo-N,N-dimethylacetamide (1.0 eq.), the reaction mixture was stirred at room temperature for several hours. LC/MS detection was applied to determine completion of the reaction. DMF was evaporated under reduced pressure and the residue was precipitated with 5% diethylamine/methanol under sonication. The solid was collected by filtration, washed with methanol twice, and further purified by column chromatography to obtain title compound (30 mg, 13.6% yield) as orange solids: 1H NMR (300 MHz, DMSO-d6): δ=13.73 (s, 1H), 10.93 (s, 1H), 8.05-8.08 (d, 1H), 7.74-7.80 (m, 2H), 6.82-6.97 (m, 2H), 5.06-5.15 (q, 1H), 4.39-4.58 (m, 3H), 4.05-4.11 (q, 1H), 2.97 (s, 3H), 2.84 (s, 3H), 2.44-2.47 (ds, 6H). LC/MS: 468.2 [M−H]+.

Workup

  1. customcompletion of the reaction
  2. customDMF was evaporated under reduced pressure
  3. customthe residue was precipitated with 5% diethylamine/methanol under sonication
  4. filtrationThe solid was collected by filtration
  5. washwashed with methanol twice
  6. customfurther purified by column chromatography

Sources & evidence

ORD record
ord-cdb0b5b581674a9f8c53c4c15d7349cd
Source dataset
uspto-grants-2010_03
Patent number
US07683057B2

Reaction notes

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