1-Methylpiperazine → HCID 57949448, compound

HRID 2427701Notes

Reaction equation

HRID 2427701 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[C:7](=[O:11])[N:6]([CH2:12][CH2:13][C:14]1[CH:19]=[CH:18][C:17]([O:20][C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)=[CH:16][CH:15]=1)[CH2:5]2.[CH3:27][N:28]1[CH2:33][CH2:32][NH:31][CH2:30][CH2:29]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.CCCCCC.C(OCC)(=O)C>[CH3:27][N:28]1[CH2:33][CH2:32][N:31]([C:2]2[CH:3]=[C:4]3[C:8](=[CH:9][CH:10]=2)[C:7](=[O:11])[N:6]([CH2:12][CH2:13][C:14]2[CH:19]=[CH:18][C:17]([O:20][C:21]4[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=4)=[CH:16][CH:15]=2)[CH2:5]3)[CH2:30][CH2:29]1

Participants

8

Reactant 4

HCID 531671-MethylpiperazineHCID 634876Binap, (A+-)-HCID 23676156Sodium t-butoxideHCID 67252589HCID 67252589, compound

Product 1

HCID 57949448HCID 57949448, compoundYield 29.4%

Reagents, catalysts & solvents 3

HCID 1140TolueneSolventHCID 8058HexaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 5-bromo-2-[2-(4-phenoxy-phenyl)-ethyl]-2,3-dihydro-isoindol-1-one (0.128 g, 0.31 mmol), 1-methyl piperazine (0.046 mL, 0.41 mmol), Pd2.dba3 (0.009 g, 0.01 mmol), BINAP (0.012 g, 0.02 mmol), and sodium tertiary-butoxide (0.048 g, 0.5 mmol) in toluene (3 mL) was heated to reflux for 3 h. Workup and silica gel column chromatography using 30% ethyl acetate in hexane afforded 5-(4-Methyl-piperazin-1-yl)-2-[2-(4-phenoxy-phenyl)-ethyl]-2,3-dihydro-isoindol-1-one (0.039 g, 29%). 1H NMR (300 MHz, CDCl3): δ (ppm) 2.36 (s, 3H), 2.58 (m, 4H), 2.94 (t, 2H), 3.32 (m, 4H), 3.81 (t, 2H), 4.16 (s, 2H), 6.82-7.35 (m, 1H), 7.69 (d, 1H).

Workup

  1. temperaturewas heated
  2. temperatureto reflux for 3 h

Sources & evidence

ORD record
ord-3150c5e41dee49b9be176ece88617879
Source dataset
uspto-grants-2011_06
Patent number
US07968570B2

Reaction notes

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