Ammonium Chloride → HCID 11638054, compound

HRID 1790641Notes

Reaction equation

HRID 1790641 reaction equation
[N-:1]=[N+:2]=[N-:3].[Na+].[CH2:5]([O:12][C:13]([N:15]1[C@H:22]([CH3:23])[CH2:21][CH2:20][C@@H:19]2[C@@H:17]([O:18]2)[CH2:16]1)=[O:14])[C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1.[Cl-].[NH4+]>CO.O>[CH2:5]([O:12][C:13]([N:15]1[CH2:16][C@H:17]([OH:18])[C@@H:19]([N:1]=[N+:2]=[N-:3])[CH2:20][CH2:21][C@H:22]1[CH3:23])=[O:14])[C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1

Participants

6

Reactant 3

HCID 25517Ammonium ChlorideHCID 33557Sodium AzideHCID 11623073HCID 11623073, compound

Product 1

HCID 11638054HCID 11638054, compoundYield 89%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

Sodium azide (0.139 g, 2.14 mmol) was added to a solution of (1S,4R,7R)-4-methyl-8-oxa-3-aza-bicyclo[5.1.0]octane-3-carboxylic acid benzyl ester (0.186 g, 0.71 mmol) and ammonium chloride (0.114 g, 2.14 mmol) in MeOH (1.5 ml) and H2O (0.15 ml), then was refluxed for 6 h. The reaction mixture was concentrated in vacuo by rotary evaporation, then was diluted with water (5 ml) and extracted with EtOAc (10 ml). The organic layer was then extracted with water, brine, dried with MgSO4, filtered, concentrated in vacuo by rotary evaporation, and chromatographed (silica gel, 20% EtOAc/hexanes) to yield the title compound (0.192 g, 89%): 7.39–7.30 (m, 5H), 5.15 (2H, s), 4.10–3.67 (m, 2H), 3.10 (1H, d), 1.85–1.53 (m, 4H), 1.09 (3H, d); Liquid Chromatgraphy/Electrospray mass spec: M+H+=305.2.

Workup

  1. temperaturewas refluxed for 6 h
  2. concentrationThe reaction mixture was concentrated in vacuo by rotary evaporation
  3. additionwas diluted with water (5 ml)
  4. extractionextracted with EtOAc (10 ml)
  5. extractionThe organic layer was then extracted with water, brine
  6. dry with materialdried with MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo by rotary evaporation
  9. customchromatographed (silica gel, 20% EtOAc/hexanes)

Sources & evidence

ORD record
ord-c5ceefc1d14342279170fb2b446f976a
Source dataset
uspto-grants-2006_07
Patent number
US07071184B2

Reaction notes

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