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

HRID 270612Notes

Reaction equation

HRID 270612 reaction equation
Cl.Cl.[CH2:3]([O:5][CH2:6][C@:7]1([C:13]([N:15]2[CH2:20][CH2:19][N:18]([C:21]3[CH:26]=[C:25]([C:27]([F:30])([F:29])[F:28])[CH:24]=[CH:23][N:22]=3)[CH2:17][CH2:16]2)=[O:14])[CH2:11][CH2:10][C@@H:9]([NH2:12])[CH2:8]1)[CH3:4].[CH3:31][CH:32]1[C:37](=O)[CH2:36][CH2:35][O:34][CH2:33]1.C(N(CC)CC)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(Cl)Cl>[CH2:3]([O:5][CH2:6][C@:7]1([C:13]([N:15]2[CH2:16][CH2:17][N:18]([C:21]3[CH:26]=[C:25]([C:27]([F:30])([F:29])[F:28])[CH:24]=[CH:23][N:22]=3)[CH2:19][CH2:20]2)=[O:14])[CH2:11][CH2:10][C@@H:9]([NH:12][C@@H:37]2[CH2:36][CH2:35][O:34][CH2:33][CH:32]2[CH3:31])[CH2:8]1)[CH3:4]

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 5049666Sodium triacetoxyborohydrideHCID 141709263-Methyloxan-4-oneHCID 68596125(1R,3S)-3-(Ethoxymethyl)-3-(4-[4-(trifluoromethyl)pyridin-2-yl]piperazin-1-ylcarbonyl)cyclopentanamine Dihydrochloride

Product 1

HCID 68596221(4R)-N-[(1R,3S)-3-(Ethoxymethyl)-3-(4-[4-(trifluoromethyl)pyridin-2-yl]piperazin-1-ylcarbonyl)cyclopentyl]-3-methyltetrahydro-2H-pyran-4-amineYield 34%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of (1R,3S)-3-(ethoxymethyl)-3-(4-[4-(trifluoromethyl)pyridin-2-yl]piperazin-1-ylcarbonyl)cyclopentanamine dihydrochloride (100.0 mg, 0.211 mmol), 3-methyltetrahydro-4H-pyran-4-one (72.3 mg, 0.634 mmol) and triethylamine (0.118 mL, 0.845 mmol) in dry methylene chloride (5 mL) was added sodium triacetoxyborohydride (134.3 mg, 0.634 mmol). After being stirred at room temperature under N2 overnight, the reaction was quenched with aqueous NaHCO3 and diluted with methylene chloride. The organic layer was separated and the aqueous layer was extracted with methylene chloride three times. The organics were combined, dried over MgSO4, filtered, purified by silica gel Combi-Flash system (gradient, 0 to 40% MeOH in EtOAc, 12 gram column) to give the desired product (34 mg, 34%). MS calculated for C25H37F3N4O3: (M+H) 499.3; found 499.3.

Workup

  1. customthe reaction was quenched with aqueous NaHCO3
  2. additiondiluted with methylene chloride
  3. customThe organic layer was separated
  4. extractionthe aqueous layer was extracted with methylene chloride three times
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. custompurified by silica gel Combi-Flash system (gradient, 0 to 40% MeOH in EtOAc, 12 gram column)

Sources & evidence

ORD record
ord-5df494de94ad4d68bbc5554788e20e6d
Source dataset
uspto-grants-2008_11
Patent number
US07449467B2

Reaction notes

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