Diisopropylethylamine → tert-butyl (3S,5R)-3-[{[1-(4-methoxybutyl)-7-oxo-4,5,6,7-tetrahydro-1H-indol-2-yl]carbonyl}(2-methylpropyl)amino]-5-(morpholin-4-ylcarbonyl)piperidine-1-carboxylate

HRID 2168877Notes

Reaction equation

HRID 2168877 reaction equation
[CH3:1][O:2][CH2:3][CH2:4][CH2:5][CH2:6][N:7]1[C:15]2[C:14](=[O:16])[CH2:13][CH2:12][CH2:11][C:10]=2[CH:9]=[C:8]1[C:17]([OH:19])=O.[CH3:20][CH:21]([CH3:45])[CH2:22][NH:23][C@H:24]1[CH2:29][C@@H:28]([C:30]([N:32]2[CH2:37][CH2:36][O:35][CH2:34][CH2:33]2)=[O:31])[CH2:27][N:26]([C:38]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])=[O:39])[CH2:25]1.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+]>[CH3:1][O:2][CH2:3][CH2:4][CH2:5][CH2:6][N:7]1[C:15]2[C:14](=[O:16])[CH2:13][CH2:12][CH2:11][C:10]=2[CH:9]=[C:8]1[C:17]([N:23]([CH2:22][CH:21]([CH3:45])[CH3:20])[C@H:24]1[CH2:29][C@@H:28]([C:30]([N:32]2[CH2:37][CH2:36][O:35][CH2:34][CH2:33]2)=[O:31])[CH2:27][N:26]([C:38]([O:40][C:41]([CH3:42])([CH3:43])[CH3:44])=[O:39])[CH2:25]1)=[O:19]

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 10989639Chloro-N,N,N',N'-tetramethylformamidinium HexafluorophosphateHCID 583553891-(4-methoxybutyl)-7-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acidHCID 59356577tert-Butyl (3S,5R)-3-(isobutylamino)-5-(morpholine-4-carbonyl)piperidine-1-carboxylate

Product 1

HCID 58355174tert-butyl (3S,5R)-3-[{[1-(4-methoxybutyl)-7-oxo-4,5,6,7-tetrahydro-1H-indol-2-yl]carbonyl}(2-methylpropyl)amino]-5-(morpholin-4-ylcarbonyl)piperidine-1-carboxylateYield 50.3%

Reagents, catalysts & solvents 2

HCID 111,2-DichloroethaneSolventHCID 516892Sodium BicarbonateSolvent

Procedure

1-(4-Methoxybutyl)-7-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid (210 mg), tert-butyl (3S,5R)-3-[(2-methylpropyl)amino]-5-(morpholin-4-ylcarbonyl)piperidine-1-carboxylate (292 mg) and N,N-diisopropylethylamine (550 μl) were dissolved in 1,2-dichloroethane (10 ml), chloro-N,N,N′,N′-tetramethylformamidinium hexafluorophosphate (244 mg) was added, and the mixture was stirred at room temperature for 15 hr. 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 (245 mg).

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-5ebf77768ee543d6a3e740e6a812c9f6
Source dataset
uspto-grants-2015_06
Patent number
US09045436B2

Reaction notes

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