Sodium hydride → Benzyl 6-[(tert-butoxycarbonyl)amino]-5-oxo-4-(2,2,2-trifluoroethyl)-1,4-diazepane-1-carboxylate

HRID 1366043

Reaction equation

HRID 1366043 reaction equation
[H-].[Na+].[C:3]([O:7][C:8]([NH:10][CH:11]1[CH2:17][N:16]([C:18]([O:20][CH2:21][C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)=[O:19])[CH2:15][CH2:14][NH:13][C:12]1=[O:28])=[O:9])([CH3:6])([CH3:5])[CH3:4].ClC(Cl)(Cl)S(O[CH2:35][C:36]([F:39])([F:38])[F:37])(=O)=O.ClC(Cl)(Cl)S([O-])(=O)=O>CN(C)C=O>[C:3]([O:7][C:8]([NH:10][CH:11]1[CH2:17][N:16]([C:18]([O:20][CH2:21][C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)=[O:19])[CH2:15][CH2:14][N:13]([CH2:35][C:36]([F:39])([F:38])[F:37])[C:12]1=[O:28])=[O:9])([CH3:6])([CH3:4])[CH3:5]

Participants

6

Reactant 4

HCID 24758Sodium hydride2×HCID 900272,2,2-Trifluoroethyl trichloromethanesulphonateHCID 22293222TrichloromethanesulfonateHCID 22293224Benzyl 6-[(tert-butoxycarbonyl)amino]-5-oxo-1,4-diazepane-1-carboxylate

Product 1

HCID 22293256Benzyl 6-[(tert-butoxycarbonyl)amino]-5-oxo-4-(2,2,2-trifluoroethyl)-1,4-diazepane-1-carboxylateYield 42%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
-35 °C

Procedure

Sodium hydride (60% dispersion in mineral oil; 180 mg, 4.43 mmol) was added to a solution of benzyl 6-[(tert-butoxycarbonyl)amino]-5-oxo-1,4-diazepane-1-carboxylate (1.34 g, 3.69 mmol) in N,N-dimethylformamide (25 mL) at −35° C. After 15 min, 2,2,2-trifluoroethyl trichloromethanesulfonate (0.911 mL, 5.54 mmol) was added and the reaction was stirred at −35° C. After 2 h, an additional amount of sodium hydride (100 mg, 2.5 mmol) and trichloromethanesulfonate (0.500 mL, 3.04 mmol) were added. After 18 h, the reaction was quenched with water and the mixture was extracted with ethyl acetate. The organic layer was washed with water (3×), saturated brine, dried over magnesium sulfate, filtered and concentrated. Purification by silica gel chromatography (hexanes→30% ethyl acetate/hexanes) gave the title compound (690 mg). MS 446 (M+1).

Workup

  1. waitAfter 2 h
  2. waitAfter 18 h
  3. customthe reaction was quenched with water
  4. extractionthe mixture was extracted with ethyl acetate
  5. washThe organic layer was washed with water (3×), saturated brine
  6. dry with materialdried over magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customPurification by silica gel chromatography (hexanes→30% ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-141b8f5d6710417eb2c6fe9a3b5ab901
Source dataset
uspto-grants-2011_02
Patent number
US07893052B2

Linked notes

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