Ethyl Acetate → [2S,3S]-1-(4-azidobut-2-yn-1-yl)-2-phenyl-3-[3-(1-methyl-1H-[1,2,3]triazol5-yl)-5-(trifluoromethyl)phenylmethoxy]piperidine

HRID 355378Notes

Reaction equation

HRID 355378 reaction equation
Cl[CH2:2][C:3]#[C:4][CH2:5][N:6]1[CH2:11][CH2:10][CH2:9][C@H:8]([O:12][CH2:13][C:14]2[CH:19]=[C:18]([C:20]([F:23])([F:22])[F:21])[CH:17]=[C:16]([C:24]3[N:28]([CH3:29])[N:27]=[N:26][CH:25]=3)[CH:15]=2)[C@@H:7]1[C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1.[N-:36]=[N+:37]=[N-:38].[Na+].[Cl-].[NH4+].C(OCC)(=O)C>CS(C)=O>[N:36]([CH2:2][C:3]#[C:4][CH2:5][N:6]1[CH2:11][CH2:10][CH2:9][C@H:8]([O:12][CH2:13][C:14]2[CH:19]=[C:18]([C:20]([F:23])([F:22])[F:21])[CH:17]=[C:16]([C:24]3[N:28]([CH3:29])[N:27]=[N:26][CH:25]=3)[CH:15]=2)[C@@H:7]1[C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1)=[N+:37]=[N-:38]

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 25517Ammonium ChlorideHCID 33557Sodium AzideHCID 18666489[2S,3S]-1-(4-chlorobut-2-yn-1-yl)-2-phenyl-3-[3-(1-methyl-1H-[1,2,3]triazol-5-yl)-5-(trifluoromethyl)phenylmethoxy]piperidine

Product 1

HCID 18666488[2S,3S]-1-(4-azidobut-2-yn-1-yl)-2-phenyl-3-[3-(1-methyl-1H-[1,2,3]triazol5-yl)-5-(trifluoromethyl)phenylmethoxy]piperidineYield 83.4%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

To a solution of [2S,3S]-1-(4-chlorobut-2-yn-1-yl)-2-phenyl-3-[3-(1-methyl-1H-[1,2,3]triazol-5-yl)-5-(trifluoromethyl)phenylmethoxy]piperidine (142 mg) in dimethyl sulphoxide (3.0 ml) was added sodium azide (20.1 mg). The solution was stirred for 3 hours at room temperature at which time aqueous ammonium chloride and ethyl acetate were added. The organic phase was separated, washed with water (20 ml), saturated brine (20 ml) dried over MgSO4, filtered and the solvent removed under reduced pressure. Purification by MPLC (20% ethyl acetate/hexane) gave [2S,3S]-1-(4-azidobut-2-yn-1-yl)-2-phenyl-3-[3-(1-methyl-1H-[1,2,3]triazol5-yl)-5-(trifluoromethyl)phenylmethoxy]piperidine as a white solid (120 mg). 1H NMR (360 MHz,CDCl3) δ 1.20-1.60 (2H, m), 2.22 (2H, m), 2.67 (1H, m), 2.98 (1H, m), 3.27 (2H, m), 3.47 (1H, br s), 3.62 (1H, br s), 3.92 (2H, s), 3.98 (3H, s), 4.47 (1H, d, J=11.0 Hz), 4.81 (1H, d, J=11.0 Hz), 7.26-7.35 (4H, m), 7.44-7.47 (4H, m), 7.69 (1H, s).

Workup

  1. additionwere added
  2. customThe organic phase was separated
  3. washwashed with water (20 ml), saturated brine (20 ml)
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. customthe solvent removed under reduced pressure
  7. customPurification by MPLC (20% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-a751e53a382344668baaa638e9c662dd
Source dataset
uspto-grants-1998_11
Patent number
US05830892

Reaction notes

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