Iodoethane → (R)-4a-Ethoxymethyl-1-(4-fluorophenyl)-1,4,4a,5,7,8-hexahydro-1,2,6-triazacyclopenta[b]naphthalene-6-carboxylic acid tert-butyl ester

HRID 1907276Notes

Reaction equation

HRID 1907276 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:17][CH2:16][C:15]2[C@:10]([CH2:28][OH:29])([CH2:11][C:12]3[CH:20]=[N:19][N:18]([C:21]4[CH:26]=[CH:25][C:24]([F:27])=[CH:23][CH:22]=4)[C:13]=3[CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].I[CH2:33][CH3:34]>O1CCCC1.C(OCC)(=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:17][CH2:16][C:15]2[C@:10]([CH2:28][O:29][CH2:33][CH3:34])([CH2:11][C:12]3[CH:20]=[N:19][N:18]([C:21]4[CH:26]=[CH:25][C:24]([F:27])=[CH:23][CH:22]=4)[C:13]=3[CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 6340IodoethaneHCID 24758Sodium hydrideHCID 66780366(R)-1-(4-fluorophenyl)-4a-hydroxymethyl-1,4,4a,5,7,8-hexahydro-1,2,6-triazacyclopenta[b]naphthalene-6-carboxylic acid tert-butyl ester

Product 1

HCID 66780480(R)-4a-Ethoxymethyl-1-(4-fluorophenyl)-1,4,4a,5,7,8-hexahydro-1,2,6-triazacyclopenta[b]naphthalene-6-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
50 °C

Procedure

A solution of (R)-1-(4-fluorophenyl)-4a-hydroxymethyl-1,4,4a,5,7,8-hexahydro-1,2,6-triazacyclopenta[b]naphthalene-6-carboxylic acid tert-butyl ester (0.25 g) in tetrahydrofuran (2.5 mL) under argon at room temperature was treated sequentially with sodium hydride (0.072 g, 60% dispersion in mineral oil) and iodoethane (0.15 mL), and the resulting mixture was stirred at 50° C. for 2 hour. The solution was cooled to room temperature, diluted with ethyl acetate, washed with saturated aqueous ammonium chloride solution, water and brine, and dried over sodium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel, eluting with a mixture of dichloromethane and ethyl acetate (9:1 by volume), to afford the title compound as an amber gum (0.21 g). LCMS (Method E): 428 (M+H)+, Retention time 4.7 minutes.

Workup

  1. temperatureThe solution was cooled to room temperature
  2. washwashed with saturated aqueous ammonium chloride solution, water and brine
  3. dry with materialdried over sodium sulfate
  4. customThe solvent was removed under reduced pressure
  5. customthe residue was purified by column chromatography on silica gel
  6. washeluting with a mixture of dichloromethane and ethyl acetate (9:1 by volume)

Sources & evidence

ORD record
ord-02469d750c2e45fe9445f9b280f73c6c
Source dataset
uspto-grants-2013_12
Patent number
US08598154B2

Reaction notes

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