2-Chloroethyl vinyl ether → tert-butyl(3S,5R)-3-[({1-[2-(ethenyloxy)ethyl]-1H-benzimidazol-2-yl}carbonyl)(2-methylpropyl)amino]-5-(morpholin-4-ylcarbonyl)piperidine-1-carboxylate

HRID 2168998

Reaction equation

HRID 2168998 reaction equation
[NH:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[C:10]([N:12]([CH2:34][CH:35]([CH3:37])[CH3:36])[C@H:13]1[CH2:18][C@@H:17]([C:19]([N:21]2[CH2:26][CH2:25][O:24][CH2:23][CH2:22]2)=[O:20])[CH2:16][N:15]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:14]1)=[O:11].Cl[CH2:39][CH2:40][O:41][CH:42]=[CH2:43].C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C)C(=O)C.O.[I-].[K+]>[CH:40]([O:41][CH2:42][CH2:43][N:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[C:10]([N:12]([CH2:34][CH:35]([CH3:37])[CH3:36])[C@H:13]1[CH2:18][C@@H:17]([C:19]([N:21]2[CH2:22][CH2:23][O:24][CH2:25][CH2:26]2)=[O:20])[CH2:16][N:15]([C:27]([O:29][C:30]([CH3:31])([CH3:32])[CH3:33])=[O:28])[CH2:14]1)=[O:11])=[CH2:39]

Participants

7

Reactant 3

HCID 80742-Chloroethyl vinyl etherHCID 10796Cesium carbonateHCID 58355717tert-Butyl (3S,5R)-3-{(1H-benzimidazol-2-ylcarbonyl)(2-methylpropyl)amino)-5-(morpholin-4-ylcarbonyl)piperidine-1-carboxylate

Product 1

HCID 58355228tert-butyl(3S,5R)-3-[({1-[2-(ethenyloxy)ethyl]-1H-benzimidazol-2-yl}carbonyl)(2-methylpropyl)amino]-5-(morpholin-4-ylcarbonyl)piperidine-1-carboxylateYield 92.3%

Reagents, catalysts & solvents 3

HCID 4875Potassium IodideCatalystHCID 962WaterSolventHCID 31374DimethylacetamideSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of tert-butyl (3S,5R)-3-{(1H-benzimidazol-2-ylcarbonyl)(2-methylpropyl)amino}-5-(morpholin-4-ylcarbonyl)piperidine-1-carboxylate (308 mg), (2-chloroethoxy)ethene (192 mg) and potassium iodide (5 mg) in N,N-dimethylacetamide (5 ml) was added cesium carbonate (586 mg), and the mixture was stirred at 60° C. for 15 hr. The reaction mixture was cooled to room temperature, diluted with water, and extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium 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 (6:4) was concentrated under reduced pressure to give the object product (323 mg).

Workup

  1. temperatureThe reaction mixture was cooled to room temperature
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with saturated brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. washa fraction eluted with ethyl acetate-hexane (6:4)
  7. concentrationwas concentrated under reduced pressure

Sources & evidence

ORD record
ord-6c4d1e4c93cf47469fb269cf1ed77853
Source dataset
uspto-grants-2015_06
Patent number
US09045436B2

Linked notes

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