Thiophene → HCID 9914377, compound

HRID 1934579Notes

Reaction equation

HRID 1934579 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[CH2:13][CH2:12][N:11]([C:14]3[CH:19]=[CH:18][C:17]([N:20]4[CH:24]=[N:23][N:22]([CH:25]([CH3:29])[C:26](=O)[CH3:27])[C:21]4=[O:30])=[CH:16][CH:15]=3)[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.[CH3:31][C@@H:32]([C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1)[NH2:33].S1C=CC=C1>C1COCC1.[Pd]>[OH:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[CH2:13][CH2:12][N:11]([C:14]3[CH:15]=[CH:16][C:17]([N:20]4[CH:24]=[N:23][N:22]([CH:25]([CH3:29])[CH:26]([NH:33][CH:32]([C:34]5[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=5)[CH3:31])[CH3:27])[C:21]4=[O:30])=[CH:18][CH:19]=3)[CH2:10][CH2:9]2)=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 8030ThiopheneHCID 758181-Phenethylamine, (-)-HCID 151255654-[4-[4-(4-Hydroxyphenyl)piperazin-1-yl]phenyl]-2-(3-oxobutan-2-yl)-1,2,4-triazol-3-one

Product 1

HCID 9914377HCID 9914377, compound

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of (±)-2,4-dihydro-4-[4-[4-(4-hydroxyphenyl)-1-piperazinyl]phenyl]-2-(1-methyl-2-oxopropyl)-3H-1,2,4-triazol-3-one (0.05 mol) and (−)-(S)-α-methyl-benzenemethanamine (0.1 mol) in THF (500 ml) was hydrogenated at 50° C. for 48 hours with Pd/C 10% (3 g) as a catalyst in the presence of titanium(VI) n-butoxide (28.4 g) and thiophene solution (3 ml). The catalyst was filtered off. Pd/C 10% (10 g) and thiophene solution (10 ml) were added again. Hydrogenation was continued at 50° C. for 48 hours. After uptake of H2, the catalyst was filtered off and the filtrate was evaporated. The residue was stirred in CH2Cl2, CH3OH and H2O. The mixture was alkalized with NaOH and filtered over dicalite. The organic layer was separated, dried, filtered and the solvent was evaporated. The residue was triturated in DIPE, filtered off and dried, yielding 19 g (74%) of [(R*,R*)(S)+(R*,S*)(S)]-2,4-dihydro-4-[4-[4-(4-hydroxyphenyl)-1-piperazinyl]phenyl]-2-[2-[(1-phenylethyl)amino)-1-methylpropyl]-3H-1,2,4-triazol-3-one (interm. 2).

Workup

  1. filtrationThe catalyst was filtered off
  2. additionPd/C 10% (10 g) and thiophene solution (10 ml) were added again
  3. filtrationAfter uptake of H2, the catalyst was filtered off
  4. customthe filtrate was evaporated
  5. filtrationfiltered over dicalite
  6. customThe organic layer was separated
  7. customdried
  8. filtrationfiltered
  9. customthe solvent was evaporated
  10. customThe residue was triturated in DIPE
  11. filtrationfiltered off
  12. customdried

Sources & evidence

ORD record
ord-755cec9e11bd453888d58d7e4b69a760
Source dataset
uspto-grants-2002_05
Patent number
US06384030B1

Reaction notes

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