Trifluoroacetic acid → methyl (2R)-2-amino-5-[5-[{2-[3,5-bis(trifluoromethyl)phenyl]-2-methylpropanoyl}(methyl)amino]-4-(4-fluoro-2-methylphenyl)-2-pyridinyl]-4-pentynoate

HRID 69539Notes

Reaction equation

HRID 69539 reaction equation
[F:1][C:2]([F:51])([F:50])[C:3]1[CH:4]=[C:5]([C:13]([CH3:49])([CH3:48])[C:14]([N:16]([CH3:47])[C:17]2[C:18]([C:39]3[CH:44]=[CH:43][C:42]([F:45])=[CH:41][C:40]=3[CH3:46])=[CH:19][C:20]([C:23]#[C:24][CH2:25][C@@H:26]([NH:31]C(OC(C)(C)C)=O)[C:27]([O:29][CH3:30])=[O:28])=[N:21][CH:22]=2)=[O:15])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1.C(O)(C(F)(F)F)=O>ClCCl>[NH2:31][C@H:26]([CH2:25][C:24]#[C:23][C:20]1[CH:19]=[C:18]([C:39]2[CH:44]=[CH:43][C:42]([F:45])=[CH:41][C:40]=2[CH3:46])[C:17]([N:16]([C:14](=[O:15])[C:13]([C:5]2[CH:4]=[C:3]([C:2]([F:50])([F:51])[F:1])[CH:8]=[C:7]([C:9]([F:11])([F:10])[F:12])[CH:6]=2)([CH3:48])[CH3:49])[CH3:47])=[CH:22][N:21]=1)[C:27]([O:29][CH3:30])=[O:28]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 57965578HCID 57965578, compound2×

Product 1

HCID 57965568methyl (2R)-2-amino-5-[5-[{2-[3,5-bis(trifluoromethyl)phenyl]-2-methylpropanoyl}(methyl)amino]-4-(4-fluoro-2-methylphenyl)-2-pyridinyl]-4-pentynoate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of methyl (2R)-5-[5-[{2-[3,5-bis(trifluoromethyl)phenyl]-2-methylpropanoyl}(methyl)amino]-4-(4-fluoro-2-methylphenyl)-2-pyridinyl]-2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-4-pentynoate (Intermediate 12, 1 g, 1.382 mmol) in Dichloromethane (15 ml), TFA (5 ml, 64.9 mmol) was added and the reaction mixture was stirred for 1 h at r.t. The solvent and the excess of TFA were evaporated and the residue purified by SPE-SCX cartridge to obtain Intermediate 13. This residue was dissolved in Acetonitrile (14 ml) and Silver trifluoromethanesulfonate (0.036 g, 0.138 mmol) was added; the reaction mixture was stirred for 6 hours at 60° C. The solvent was evaporated and the residue was dissolved in DCM (15 ml) and the metal catalyst was filtered off.

Workup

  1. customThe solvent and the excess of TFA were evaporated
  2. customthe residue purified by SPE-SCX cartridge

Sources & evidence

ORD record
ord-7146b5ecbc1f45ff91a2f2cf2d8cd164
Source dataset
uspto-grants-2014_09
Patent number
US08822504B2

Reaction notes

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