Hydrochloric Acid → (S)-1-(2-(1-Phenylethylamino)-4-(piperazin-1-yl)phenyl)-2,2,2-trifluoroethanone hydrochloride

HRID 1910572Notes

Reaction equation

HRID 1910572 reaction equation
[C:1]1([CH:7]([NH:9][C:10]2[CH:11]=[C:12]([N:22]3[CH2:27][CH2:26][N:25](C(OC(C)(C)C)=O)[CH2:24][CH2:23]3)[CH:13]=[CH:14][C:15]=2[C:16](=[O:21])[C:17]([F:20])([F:19])[F:18])[CH3:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[ClH:35]>ClCCl.C(OCC)C>[ClH:35].[C:1]1([C@@H:7]([NH:9][C:10]2[CH:11]=[C:12]([N:22]3[CH2:23][CH2:24][NH:25][CH2:26][CH2:27]3)[CH:13]=[CH:14][C:15]=2[C:16](=[O:21])[C:17]([F:20])([F:18])[F:19])[CH3:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 58707346t-Butyl 4-(3-(1-phenylethylamino)-4-(2,2,2-trifluoroacetyl) phenyl)piperazine-1-carboxylate

Product 1

HCID 67147598(S)-1-(2-(1-Phenylethylamino)-4-(piperazin-1-yl)phenyl)-2,2,2-trifluoroethanone hydrochlorideYield 72%

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution of t-butyl 4-(3-(1-phenylethylamino)-4-(2,2,2-trifluoroacetyl)phenyl)piperazine-1-carboxylate (50 mg, 0.1 mmol) in dry dichloromethane (1.0 mL) was added a saturated solution of HCl in diethyl ether (20 mL). The reaction mixture was stirred for 2 h. The solvent was removed by rotary evaporation to afford the title compound (31 mg, 72% yield). 1H NMR (400 MHz, CD3OD): δ 7.63 (d, 1H), 7.36 (m, 5H), 6.36 (d, 1H), 5.86 (s, 1H), 4.75 (m, 1H), 3.52 (m, 2H), 3.45 (m, 2H), 3.17 (m, 4H), 1.60 (d, 3H); MS (ESI) m/z: Calculated for C20H23F3N3O: 378.18; Observed: 378.5 (M++1).

Workup

  1. customThe solvent was removed by rotary evaporation

Sources & evidence

ORD record
ord-d88c8dd659da4bb283e9ad52b9dc6bc0
Source dataset
uspto-grants-2013_12
Patent number
US08604021B2

Reaction notes

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