N-methylcyclopentanamine → (R)-1-cyclopentyl-3-(1-(4-fluoro-3-(trifluoromethyl)phenyl)-1-(3-fluoro-5-(1,1,2,2-tetrafluoroethoxy)phenyl)-2-phenylethyl)-1-methylurea

HRID 1874174Notes

Reaction equation

HRID 1874174 reaction equation
[CH:1]1([NH:6][C:7]([NH:9][C@:10]([C:32]2[CH:37]=[CH:36][C:35]([F:38])=[C:34]([C:39]([F:42])([F:41])[F:40])[CH:33]=2)([C:18]2[CH:23]=[C:22]([O:24][C:25]([F:30])([F:29])[CH:26]([F:28])[F:27])[CH:21]=[C:20]([F:31])[CH:19]=2)[CH2:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)=[O:8])[CH2:5][CH2:4][CH2:3][CH2:2]1.[CH3:43]NC1CCCC1>CS(C)=O.C1COCC1>[CH:1]1([N:6]([CH3:43])[C:7]([NH:9][C@:10]([C:32]2[CH:37]=[CH:36][C:35]([F:38])=[C:34]([C:39]([F:42])([F:41])[F:40])[CH:33]=2)([C:18]2[CH:23]=[C:22]([O:24][C:25]([F:29])([F:30])[CH:26]([F:27])[F:28])[CH:21]=[C:20]([F:31])[CH:19]=2)[CH2:11][C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)=[O:8])[CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

4

Reactant 2

HCID 7020624N-methylcyclopentanamineHCID 59458874HCID 59458874, compound

Product 1

HCID 23582606(R)-1-cyclopentyl-3-(1-(4-fluoro-3-(trifluoromethyl)phenyl)-1-(3-fluoro-5-(1,1,2,2-tetrafluoroethoxy)phenyl)-2-phenylethyl)-1-methylureaYield 65%

Reagents, catalysts & solvents 1

HCID 21830753dimethylsulfoxide THFSolvent

Conditions

Temperature
120 °C

Procedure

To a solution of (R)-1-cyclopentyl-3-(1-(4-fluoro-3-(trifluoromethyl)phenyl)-1-(3-fluoro-5-(1,1,2,2-tetrafluoroethoxy)phenyl)-2-phenylethyl)urea (20 mg, 0.033 mmol), prepared as described in Procedure 3, 4, 5, 6 and 2, in DMSO/THF (0.1 mL/0.1 mL) was added N-methylcyclopentanamine (32 mg, 0.33 mmol). The resulting solution was stirred at 120° C. under microwave irradiation for 1800 sec. The reaction mixture was filtered and the solid was washed with EtOAc. The filtrate was then washed with H2O, sat. NaCl and dried over Na2SO4. The organic solvent was evaporated under reduced pressure and the resulting residue was purified by prep HPLC (Phenomenex AXIA Luna 75×30 mm, 5μ column eluting with 10-90% ACN/H2O over 10 minutes containing 0.1% TFA; 40 mL/min, monitoring at 220 nm) to afford (R)-1-cyclopentyl-3-(1-(4-fluoro-3-(trifluoromethyl)phenyl)-1-(3-fluoro-5-(1,1,2,2-tetrafluoroethoxy)phenyl)-2-phenylethyl)-1-methylurea (Example 246) as white lyophillate (13 mg, 65% yield). LCMS: [M+H] 619.2 (Phenomenex Luna C18 column, 4.6×50 mm eluting with 10-90% MeOH/H2O over 4 minutes containing 0.1% TFA; 4 mL/min, monitoring at 220 nm).

Workup

  1. filtrationThe reaction mixture was filtered
  2. washthe solid was washed with EtOAc
  3. washThe filtrate was then washed with H2O, sat. NaCl
  4. dry with materialdried over Na2SO4
  5. customThe organic solvent was evaporated under reduced pressure
  6. customthe resulting residue was purified by prep HPLC (Phenomenex AXIA Luna 75×30 mm, 5μ column eluting with 10-90% ACN/H2O over 10 minutes containing 0.1% TFA; 40 mL/min, monitoring at 220 nm)

Sources & evidence

ORD record
ord-031f4044ecfd44a69635db9a94a9f858
Source dataset
uspto-grants-2012_11
Patent number
US08304403B2

Reaction notes

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