Diisopropylethylamine → 1-tert-butyl 3-methyl (3R,5S)-5-[({1-(2-fluorophenyl)-5-[(methylsulfanyl)methyl]-1H-1,2,3-triazol-4-yl}carbonyl)(2-methylpropyl)amino]piperidine-1,3-dicarboxylate

HRID 1509580Notes

Reaction equation

HRID 1509580 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[N:8]1[C:12]([CH2:13][S:14][CH3:15])=[C:11]([C:16]([OH:18])=O)[N:10]=[N:9]1.[CH2:19]([NH:23][C@@H:24]1[CH2:29][N:28]([C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[CH2:27][C@H:26]([C:37]([O:39][CH3:40])=[O:38])[CH2:25]1)[CH:20]([CH3:22])[CH3:21].C(N(CC)C(C)C)(C)C.F[P-](F)(F)(F)(F)F.ClC(N(C)C)=[N+](C)C>ClCCCl.C(=O)([O-])O.[Na+]>[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[N:8]1[C:12]([CH2:13][S:14][CH3:15])=[C:11]([C:16]([N:23]([CH2:19][CH:20]([CH3:22])[CH3:21])[C@@H:24]2[CH2:29][N:28]([C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[CH2:27][C@H:26]([C:37]([O:39][CH3:40])=[O:38])[CH2:25]2)=[O:18])[N:10]=[N:9]1

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 10989639Chloro-N,N,N',N'-tetramethylformamidinium HexafluorophosphateHCID 58355170HCID 58355170, compoundHCID 593566071-tert-butyl 3-methyl (3R,5S)-5-[(2-methylpropyl)amino]piperidine-1,3-dicarboxylate

Product 1

HCID 583554821-tert-butyl 3-methyl (3R,5S)-5-[({1-(2-fluorophenyl)-5-[(methylsulfanyl)methyl]-1H-1,2,3-triazol-4-yl}carbonyl)(2-methylpropyl)amino]piperidine-1,3-dicarboxylateYield 79%

Reagents, catalysts & solvents 2

HCID 111,2-DichloroethaneSolventHCID 516892Sodium BicarbonateSolvent

Procedure

1-(2-Fluorophenyl)-5-[(methylsulfanyl)methyl]-1H-1,2,3-triazole-4-carboxylic acid (960 mg), 1-tert-butyl 3-methyl (3R,5S)-5-(isobutylamino)piperidine-1,3-dicarboxylate (1.15 g) and N,N-diisopropylethylamine (1.6 μl) were dissolved in 1,2-dichloroethane (10 ml), chloro-N,N,N′,N′-tetramethylformamidinium hexafluorophosphate (1.50 g) was added and the mixture was stirred at room temperature for 3 days. The reaction mixture was diluted with saturated aqueous sodium hydrogen carbonate solution and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was subjected to silica gel column chromatography, and a fraction eluted with ethyl acetate-hexane (10:90-100:0) was concentrated under reduced pressure to give the object product (1.60 g).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. washa fraction eluted with ethyl acetate-hexane (10:90-100:0)
  6. concentrationwas concentrated under reduced pressure

Sources & evidence

ORD record
ord-d541248b68e04ef1ba04cb7f95022175
Source dataset
uspto-grants-2015_12
Patent number
US09221836B2

Reaction notes

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