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Sodium hydride → tert-butyl 8-[(2,5-dimethyl-3-furyl)sulfonyl]-1-methyl-1,3,4,8-tetrahydro-2H-[1,4]oxazepino[6,7-e]indole-2-carboxylate

HRID 2423211
Notes
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Reaction equation

HRID 2423211 reaction equation
[CH3:1][CH:2]1[C:8]2=[C:9]3[C:13](=[CH:14][CH:15]=[C:7]2[O:6][CH2:5][CH2:4][N:3]1[C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[NH:12][CH:11]=[CH:10]3.[H-].[Na+].[CH3:25][C:26]1[O:27][C:28]([CH3:35])=[CH:29][C:30]=1[S:31](Cl)(=[O:33])=[O:32]>CN(C=O)C>[CH3:25][C:26]1[O:27][C:28]([CH3:35])=[CH:29][C:30]=1[S:31]([N:12]1[C:13]2[C:9](=[C:8]3[CH:2]([CH3:1])[N:3]([C:16]([O:18][C:19]([CH3:21])([CH3:20])[CH3:22])=[O:17])[CH2:4][CH2:5][O:6][C:7]3=[CH:15][CH:14]=2)[CH:10]=[CH:11]1)(=[O:33])=[O:32]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 27950242,5-dimethylfuran-3-sulfonyl ChlorideHCID 67242740tert-Butyl 1-methyl-1,3,4,8-tetrahydro-2H-[1,4]oxazepino[6,7-e]indole-2-carboxylate2×

Product 1

HCID 67241530tert-butyl 8-[(2,5-dimethyl-3-furyl)sulfonyl]-1-methyl-1,3,4,8-tetrahydro-2H-[1,4]oxazepino[6,7-e]indole-2-carboxylateYield 49.7%

Reagents, catalysts & solvents 1

HCID 6228
Dimethylformamide
Solvent

Procedure

tert-Butyl 1-methyl-1,3,4,8-tetrahydro-2H-[1,4]oxazepino[6,7-e]indole-2-carboxylate (Intermediate 42, 25 mg, 0.083 mmol) was dissolved in DMF (1 mL) and sodium hydride (60% in mineral oil, 4.0 mg, 0.17 mmol) was added. The reaction mixture was stirred at room temperature for 15 minutes before 2,5-dimethyl-3-furansulfonyl chloride (22 mg, 0.11 mmol) was added. The reaction mixture was allowed to stir at room temperature overnight. The reaction was quenched by addition of water and the crude product was purified by preparative HPLC (XTerra C18, 50 mM NH4HCO3 pH 10-CH3CN) to give tert-butyl 8-[(2,5-dimethyl-3-furyl)sulfonyl]-1-methyl-1,3,4,8-tetrahydro-2H-[1,4]oxazepino[6,7-e]indole-2-carboxylate (19 mg) which was dissolved in DCM (1 mL) and TFA (1 mL) was added. The reaction mixture was stirred at room temperature for 1 hour and the solvent was removed under reduced pressure. The crude material was purified by preparative HPLC (XTerra C18, 50 mM NH4HCO3 pH 10-CH3CN) to give the title compound (2 mg). MS m/z 361 [M+H]+.

Workup

  1. additionwas added
  2. customThe reaction was quenched by addition of water
  3. customthe crude product was purified by preparative HPLC (XTerra C18, 50 mM NH4HCO3 pH 10-CH3CN)

Sources & evidence

ORD record
ord-f82fee105a834ea1943f0d94ba9499eb
Source dataset
uspto-grants-2011_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07960374B2

Reaction notes

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