Diisopropylethylamine → (1R,2S,5R)-5-Methyl-2-(propan-2-yl)cyclohexyl N-(2-methyl-2-{[5-(trifluoromethyl)pyridin-2-yl]amino}cyclopentyl)carbamate

HRID 1750571Notes

Reaction equation

HRID 1750571 reaction equation
Cl.[NH2:2][C:3]1([CH3:22])[CH2:7][CH2:6][CH2:5][CH:4]1[NH:8][C:9](=[O:21])[O:10][C@@H:11]1[CH2:16][C@H:15]([CH3:17])[CH2:14][CH2:13][C@H:12]1[CH:18]([CH3:20])[CH3:19].F[C:24]1[CH:29]=[CH:28][C:27]([C:30]([F:33])([F:32])[F:31])=[CH:26][N:25]=1.CCN(C(C)C)C(C)C.C(=O)(O)[O-].[Na+]>CS(C)=O.C(OCC)(=O)C>[CH3:22][C:3]1([NH:2][C:24]2[CH:29]=[CH:28][C:27]([C:30]([F:33])([F:32])[F:31])=[CH:26][N:25]=2)[CH2:7][CH2:6][CH2:5][CH:4]1[NH:8][C:9](=[O:21])[O:10][C@@H:11]1[CH2:16][C@H:15]([CH3:17])[CH2:14][CH2:13][C@H:12]1[CH:18]([CH3:19])[CH3:20]

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 516892Sodium BicarbonateHCID 54637542-Fluoro-5-(trifluoromethyl)pyridineHCID 118308291(1R,2S,5R)-5-Methyl-2-(propan-2-yl)cyclohexyl N-(2-amino-2-methylcyclopentyl)carbamate hydrochloride2×

Product 1

HCID 118308163(1R,2S,5R)-5-Methyl-2-(propan-2-yl)cyclohexyl N-(2-methyl-2-{[5-(trifluoromethyl)pyridin-2-yl]amino}cyclopentyl)carbamate

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of (1R,2S,5R)-5-methyl-2-(propan-2-yl)cyclohexyl N-(2-amino-2-methylcyclopentyl)carbamate hydrochloride (Intermediate 27; 1.50 g, 4.51 mmol), 2-fluoro-5-(trifluoromethyl)pyridine (CAS number 69045-82-5; 0.652 mL, 5.41 mmol) and DIPEA (2.36 ml, 13.5 mmol) in DMSO (10 ml) was subjected to microwave irradiation at 140° C. for 4 hours. The reaction was diluted with ethyl acetate (200 ml) and a saturated solution of sodium bicarbonate (100 ml). The aqueous layer was further extracted with ethyl acetate (100 ml). The combined organics were washed with water (50 ml), brine (50 ml), dried over magnesium sulfate, filtered through a hydrophobic frit and concentrated in vacuo. The crude product was purified by column chromatography (silica, 10-20% diethyl ether/petrol) to afford the title compound as a single trans-enantiomer.

Workup

  1. customirradiation at 140° C. for 4 hours
  2. extractionThe aqueous layer was further extracted with ethyl acetate (100 ml)
  3. washThe combined organics were washed with water (50 ml), brine (50 ml)
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered through a hydrophobic frit
  6. concentrationconcentrated in vacuo
  7. customThe crude product was purified by column chromatography (silica, 10-20% diethyl ether/petrol)

Sources & evidence

ORD record
ord-e200da506a1f458cb33efde14d7fb2ee
Source dataset
uspto-grants-2015_10
Patent number
US09156829B2

Reaction notes

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