Benzhydrylpiperazine → 1-[2-(4-Benzhydrylpiperazin-1-yl)-2-oxoethyl]-3,3-diphenylpyrrolidin-2-one

HRID 1667063Notes

Reaction equation

HRID 1667063 reaction equation
[CH:1]([N:14]1[CH2:19][CH2:18][NH:17][CH2:16][CH2:15]1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[O:20]=[C:21]1[C:25]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[CH2:24][CH2:23][N:22]1[CH2:38][C:39](O)=[O:40].Cl.C(N=C=NCCCN(C)C)C>ClCCl.CN(C)C1C=CN=CC=1>[CH:1]([N:14]1[CH2:19][CH2:18][N:17]([C:39](=[O:40])[CH2:38][N:22]2[CH2:23][CH2:24][C:25]([C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)([C:32]3[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=3)[C:21]2=[O:20])[CH2:16][CH2:15]1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 70048BenzhydrylpiperazineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 673590132-(2-Oxo-3,3-diphenylpyrrolidin-1-yl)acetic acid

Product 1

HCID 452753891-[2-(4-Benzhydrylpiperazin-1-yl)-2-oxoethyl]-3,3-diphenylpyrrolidin-2-one

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

To a solution of 1-benzhydrylpiperazine (0.58 g, 2.30 mmol) in dichloromethane (20 mL) under nitrogen was added the product from Example 1C (0.68 g, 2.30 mmol) followed by N1-((ethylimino)methylene)-N3,N3-dimethylpropane-1,3-diamine hydrochloride (0.88 g, 4.60 mmol) and N,N-dimethylpyridin-4-amine (0.014 g, 0.12 mmol). The reaction mixture was stirred overnight at room temperature. The reaction was concentrated and the residue was partitioned in ethyl acetate/water (8:2, 400 mL). The organic layer was washed with water followed by brine, dried over magnesium sulfate, filtered and concentrated. Silica gel chromatography eluting with ethyl acetate/hexane (1:3) gave the title compound. 1H NMR (300 MHz, DMSO-d6) δ ppm 7.42-7.46 (m, 4H), 7.19-7.33 (m, 16H), 4.31 (s, 1H), 4.15-4.16 (br s, 2H), 3.38-3.47 (m, 4H), 3.35 (t, J=6.3 Hz, 2H), 2.71 (t, J=6.5 Hz, 2H), 2.23-2.29 (m, 4H); MS (DCI+) m/z 530 (M+H)+.

Workup

  1. concentrationThe reaction was concentrated
  2. customthe residue was partitioned in ethyl acetate/water (8:2, 400 mL)
  3. washThe organic layer was washed with water
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. washSilica gel chromatography eluting with ethyl acetate/hexane (1:3)

Sources & evidence

ORD record
ord-b885a66049c844fea616fe4e73f2fd05
Source dataset
uspto-grants-2011_10
Patent number
US08044069B2

Reaction notes

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