Benzyl Bromide → (RS,SR)-2-benzenesulfonyl-N-benzyl-2-(6-chloro-2,3,4,9-tetrahydro-1H-carbazol-2-yl)-2-fluoro-N-methyl-acetamide

HRID 602765Notes

Reaction equation

HRID 602765 reaction equation
C(OC([N:8]1[C:20]2[CH2:19][CH:18]([C:21]([S:27]([C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=3)(=[O:29])=[O:28])([F:26])[C:22](=[O:25])[NH:23][CH3:24])[CH2:17][CH2:16][C:15]=2[C:14]2[C:9]1=[CH:10][CH:11]=[C:12]([Cl:36])[CH:13]=2)=O)(C)(C)C.[H-].[Na+].Br[CH2:40][C:41]1[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=1>C1COCC1>[C:30]1([S:27]([C:21]([CH:18]2[CH2:17][CH2:16][C:15]3[C:14]4[C:9](=[CH:10][CH:11]=[C:12]([Cl:36])[CH:13]=4)[NH:8][C:20]=3[CH2:19]2)([F:26])[C:22]([N:23]([CH2:40][C:41]2[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=2)[CH3:24])=[O:25])(=[O:28])=[O:29])[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=1

Participants

5

Reactant 3

HCID 7498Benzyl BromideHCID 24758Sodium hydrideHCID 67267476(RS,SR)-2-(benzenesulfonyl-fluoro-methylcarbamoyl-methyl)-6-chloro-1,2,3,4-tetrahydro-carbazole-9-carboxylic acid tert-butyl ester

Product 1

HCID 11237793(RS,SR)-2-benzenesulfonyl-N-benzyl-2-(6-chloro-2,3,4,9-tetrahydro-1H-carbazol-2-yl)-2-fluoro-N-methyl-acetamideYield 60%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

60 mg (0.112 mmol) of (RS,SR)-2-(benzenesulfonyl-fluoro-methylcarbamoyl-methyl)-6-chloro-1,2,3,4-tetrahydro-carbazole-9-carboxylic acid tert-butyl ester (from example 59.1) in 3 mL of THF were treated with 7 mg (0.168 mmol, 1.5 eq) of NaH (55% in oil) at 0° C. over 40 min. 38 mg (0.224 mmol, 2eq) of bromomethly-benzene were added and the reaction mixture was stirred over night at RT. The solvent was evaporated, the residue was dissolved in 3 mL of CH2Cl2, 1 mL of TFA was added, and the reaction mixture was stirred over night at RT. Evaporation of the solvent and purification of the residue by preparative HPLC (C18 column) yielded 35 mg (60%) of (RS,SR)-2-benzenesulfonyl-N-benzyl-2-(6-chloro-2,3,4,9-tetrahydro-1H-carbazol-2-yl)-2-fluoro-N-methyl-acetamide as a white solid, MS: 525 (MH+).

Workup

  1. customThe solvent was evaporated
  2. dissolutionthe residue was dissolved in 3 mL of CH2Cl2
  3. addition1 mL of TFA was added
  4. stirringthe reaction mixture was stirred over night at RT
  5. customEvaporation of the solvent and purification of the residue by preparative HPLC (C18 column)

Sources & evidence

ORD record
ord-ded6d0c159274c3db0dffdc2ba0e8dae
Source dataset
uspto-grants-2011_03
Patent number
US07906546B2

Reaction notes

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