Sodium Sulfite → tert-Butyl 7-Oxa-3-azabicyclo(4.1.0)heptane-3-carboxylate

HRID 875619Notes

Reaction equation

HRID 875619 reaction equation
C1C=C(Cl)C=C(C(OO)=[O:9])C=1.[N:12]1([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:17][CH2:16][CH:15]=[CH:14][CH2:13]1.S([O-])([O-])=O.[Na+].[Na+].C(=O)(O)[O-].[Na+]>C(Cl)Cl>[CH:14]12[O:9][CH:15]1[CH2:16][CH2:17][N:12]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:13]2

Participants

6

Reactant 4

HCID 24437Sodium SulfiteHCID 70297m-Chloroperbenzoic acidHCID 516892Sodium BicarbonateHCID 13094787tert-Butyl 3,6-dihydropyridine-1(2H)-carboxylate

Product 1

HCID 21991116tert-Butyl 7-Oxa-3-azabicyclo(4.1.0)heptane-3-carboxylateYield 99%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
0 °C

Procedure

A solution of m-CPBA (7.53 g, 32.7 mmol) in DCM (10 mL) was added to a solution of tert-butyl 5,6-dihydropyridine-1(2H)-carboxylate (5.00 g, 27.3 mmol) in DCM (20 mL) at 0° C. The reaction was stirred at 0° C. for 15 minutes and then at room temperature for 3 hours. Saturated sodium sulfite solution (20 mL) and saturated sodium bicarbonate solution (30 mL) was added. The organic layer was separated, washed with brine, dried (sodium sulfate) and concentrated in vacuo to give tert-butyl 7-oxa-3-azabicyclo[4.1.0]heptane-3-carboxylate (5.36 g, 99%) as oil.

Workup

  1. waitat room temperature for 3 hours
  2. customThe organic layer was separated
  3. washwashed with brine
  4. dry with materialdried (sodium sulfate)
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-a6af83e4753e44689d9e20715f11b46f
Source dataset
uspto-grants-2015_03
Patent number
US08981085B2

Reaction notes

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