Trifluoroacetic acid → (3R)-3-amino-1-methyl-3-[3-[4-methyl-6-[4-(trifluoromethyl)phenyl]pyrimidin-2-yl]prop-2-ynyl]pyrrolidin-2-one

HRID 626890Notes

Reaction equation

HRID 626890 reaction equation
FC(F)(F)C(O)=O.[CH3:8][N:9]1[CH2:13][CH2:12][C@:11]([NH:34]C(=O)OC(C)(C)C)([CH2:14][C:15]#[C:16][C:17]2[N:22]=[C:21]([CH3:23])[CH:20]=[C:19]([C:24]3[CH:29]=[CH:28][C:27]([C:30]([F:33])([F:32])[F:31])=[CH:26][CH:25]=3)[N:18]=2)[C:10]1=[O:42].C([O-])([O-])=O.[K+].[K+]>C(Cl)Cl>[NH2:34][C@:11]1([CH2:14][C:15]#[C:16][C:17]2[N:22]=[C:21]([CH3:23])[CH:20]=[C:19]([C:24]3[CH:25]=[CH:26][C:27]([C:30]([F:33])([F:32])[F:31])=[CH:28][CH:29]=3)[N:18]=2)[CH2:12][CH2:13][N:9]([CH3:8])[C:10]1=[O:42]

Participants

5

Reactant 3

HCID 6422Trifluoroacetic acidHCID 11430Potassium CarbonateHCID 90015784tert-butyl N-[(3R)-1-methyl-3-[3-[4-methyl-6-[4-(trifluoromethyl)phenyl]pyrimidin-2-yl]prop-2-ynyl]-2-oxo-pyrrolidin-3-yl]carbamate

Product 1

HCID 90016090(3R)-3-amino-1-methyl-3-[3-[4-methyl-6-[4-(trifluoromethyl)phenyl]pyrimidin-2-yl]prop-2-ynyl]pyrrolidin-2-oneYield 89.5%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Trifluoroacetic acid (2 mL, 26.92 mmol) was added to a solution of tert-butyl N-[(3R)-1-methyl-3-[3-[4-methyl-6-[4-(trifluoromethyl)phenyl]pyrimidin-2-yl]prop-2-ynyl]-2-oxo-pyrrolidin-3-yl]carbamate (which may be prepared as described in Description 13) (482 mg, 0.99 mmol) in DCM (10 mL) at 20° C. and the reaction was stirred for 1 hour. Solid K2CO3 was added to quench the TFA present (care: gas evolved) and the resultant solid was filtered off and washed five times with DCM. The solvent was evaporated to give (3R)-3-amino-1-methyl-3-[3-[4-methyl-6-[4-(trifluoromethyl)phenyl]pyrimidin-2-yl]prop-2-ynyl]pyrrolidin-2-one (D14) (343 mg, 0.883 mmol, 89.5% yield) as a yellow oil. 300 MHz NMR δH (CDCl3) 1.95 (2H, br.s), 2.07-2.17 (1H, m), 2.44-2.53 (1H, m), 2.63 (3H, s), 2.72-2.88 (2H, abq), 2.94 (3H, s), 3.38-3.53 (2H, m), 7.53 (1H, s), 7.78 (2H, d), 8.20 (2H, d).

Workup

  1. customto quench the TFA present (care: gas evolved)
  2. filtrationthe resultant solid was filtered off
  3. washwashed five times with DCM
  4. customThe solvent was evaporated

Sources & evidence

ORD record
ord-eaff04172c4e4372b9e738ae0a45d05a
Source dataset
uspto-grants-2016_04
Patent number
US09309254B2

Reaction notes

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