Triethylamine → N-[(1R,3S)-3-Isopropyl-3-(4-[6-(trifluoromethyl)pyridin-2-yl]piperazin-1-ylcarbonyl)cyclopentyl]-3-methyltetrahydro-2H-pyran-4-amine

HRID 270584Notes

Reaction equation

HRID 270584 reaction equation
Cl.Cl.[CH:3]([C@:6]1([C:12]([N:14]2[CH2:19][CH2:18][N:17]([C:20]3[CH:25]=[CH:24][CH:23]=[C:22]([C:26]([F:29])([F:28])[F:27])[N:21]=3)[CH2:16][CH2:15]2)=[O:13])[CH2:10][CH2:9][C@@H:8]([NH2:11])[CH2:7]1)([CH3:5])[CH3:4].[CH3:30][CH:31]1[C:36](=O)[CH2:35][CH2:34][O:33][CH2:32]1.C(N(CC)CC)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(Cl)Cl.O>[CH:3]([C@:6]1([C:12]([N:14]2[CH2:19][CH2:18][N:17]([C:20]3[CH:25]=[CH:24][CH:23]=[C:22]([C:26]([F:29])([F:27])[F:28])[N:21]=3)[CH2:16][CH2:15]2)=[O:13])[CH2:10][CH2:9][C@@H:8]([NH:11][CH:36]2[CH2:35][CH2:34][O:33][CH2:32][CH:31]2[CH3:30])[CH2:7]1)([CH3:5])[CH3:4]

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 5049666Sodium triacetoxyborohydrideHCID 141709263-Methyloxan-4-oneHCID 68597226(1R,3S)-3-isopropyl-3-(4-[6-(trifluoromethyl)pyridin-2-yl]piperazin-1-ylcarbonyl)cyclopentanamine dihydrochloride

Product 1

HCID 11655972N-[(1R,3S)-3-Isopropyl-3-(4-[6-(trifluoromethyl)pyridin-2-yl]piperazin-1-ylcarbonyl)cyclopentyl]-3-methyltetrahydro-2H-pyran-4-amineYield 79.7%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution of (1R,3S)-3-isopropyl-3-(4-[6-(trifluoromethyl)pyridin-2-yl]piperazin-1-ylcarbonyl)cyclopentanamine dihydrochloride (120 mg, 0.26 mmol), 3-methyltetrahydro-4H-pyran-4-one (75 mg, 0.66 mmol), triethylamine (0.15 mL, 1.0 mmol) in methylene chloride (8 mL) was added sodium triacetoxyborohydride (0.17 g, 0.79 mmol). After being stirred at room temperature overnight, the reaction mixture was diluted with water and extracted with ethyl acetate three times, dried with sodium sulfate, filtered, and concentrated in vacuo. The crude residue was purified by flash column chromatography (ethyl acetate to EtOAc/Et3N=10:0.1) to yield the desired product (100 mg, 79%). LCMS calculated for C25H38F3N4O2: (M+1) 483.2; found 483.2.

Workup

  1. extractionextracted with ethyl acetate three times
  2. dry with materialdried with sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe crude residue was purified by flash column chromatography (ethyl acetate to EtOAc/Et3N=10:0.1)

Sources & evidence

ORD record
ord-4a803c9c6c7741b29e40a30af5b9f2fd
Source dataset
uspto-grants-2008_11
Patent number
US07449467B2

Reaction notes

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