1-Phenethylamine, (-)- → 5-(1-(t-butoxycarbonyl)-1,2,3,6-tetrahydropyrid-4-yl)-7-(2-(1(S)-phenylethyl)amino-4-pyridyl)-8-(3-(trifluoromethyl)phenyl)-1,2,4-triazolo[4,3-c]pyrimidine

HRID 897406Notes

Reaction equation

HRID 897406 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH:12]=[C:11]([C:14]2[N:19]3[CH:20]=[N:21][N:22]=[C:18]3[C:17]([C:23]3[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([F:32])([F:31])[F:30])[CH:24]=3)=[C:16]([C:33]3[CH:38]=[CH:37][N:36]=[C:35](Cl)[CH:34]=3)[N:15]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:40][C@H:41]([NH2:48])[C:42]1[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=1.C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1.CC(C)([O-])C.[Na+]>C1(C)C=CC=CC=1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH:12]=[C:11]([C:14]2[N:19]3[CH:20]=[N:21][N:22]=[C:18]3[C:17]([C:23]3[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([F:32])([F:31])[F:30])[CH:24]=3)=[C:16]([C:33]3[CH:38]=[CH:37][N:36]=[C:35]([NH:48][C@H:41]([C:42]4[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=4)[CH3:40])[CH:34]=3)[N:15]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 4

HCID 758181-Phenethylamine, (-)-HCID 634876Binap, (A+-)-HCID 223465805-(1-(t-Butoxycarbonyl)-1,2,3,6-tetrahydropyrid-4-yl)-7-(2-chloro-4-pyridyl)-8-(3-(trifluoromethyl)phenyl)-1,2,4-triazolo[4,3-c]pyrimidineHCID 23676156Sodium t-butoxide

Product 1

HCID 208169045-(1-(t-butoxycarbonyl)-1,2,3,6-tetrahydropyrid-4-yl)-7-(2-(1(S)-phenylethyl)amino-4-pyridyl)-8-(3-(trifluoromethyl)phenyl)-1,2,4-triazolo[4,3-c]pyrimidine

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 1140TolueneSolvent

Conditions

Temperature
90 °C

Procedure

5-(1-(t-Butoxycarbonyl)-1,2,3,6-tetrahydropyrid-4-yl)-7-(2-chloro-4-pyridyl)-8-(3-(trifluoromethyl)phenyl)-1,2,4-triazolo[4,3-c]pyrimidine (0.93 g, 1.7 mmol), (S)-α-methylbenzylamine (0.48 g, 4 mmol), palladium acetate (0.06 g, 0.26 mmol) and racemic BINAP (0.16 g, 0.26 mmol) were combined in toluene (15 ml) and the resulting solution was degassed with nitrogen. Sodium t-butoxide (0.48 g, 5 mmol) was added and the resulting mixture was heated to 90° C. for 1 hour. The mixture was partitioned between sat. ammonium chloride and ethyl acetate. The organic layer was separated, dried over sodium sulfate, filtered and concentrated to a syrup. The residue was purified by column chromatography on silica gel (30% ethyl acetate in hexane) gave the product as a syrup; MS m/z (M+H)+ 642.4; C35H34F3N7O2 require 641.3.

Workup

  1. customthe resulting solution was degassed with nitrogen
  2. customThe mixture was partitioned between sat. ammonium chloride and ethyl acetate
  3. customThe organic layer was separated
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated to a syrup
  7. customThe residue was purified by column chromatography on silica gel (30% ethyl acetate in hexane)

Sources & evidence

ORD record
ord-1d79ef9174754f0fa6cf6c9d5a4a4f45
Source dataset
uspto-grants-2005_07
Patent number
US06921762B2

Reaction notes

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