1-(4-Bromophenyl)-cis-3,5-dimethylpiperazine → 4-(cis-3,5-Dimethylpiperazin-1-yl)phenylboronic acid

HRID 2383598Notes

Reaction equation

HRID 2383598 reaction equation
C(N1CCN(C2C=CC([B:16]([OH:18])[OH:17])=CC=2)CC1)(C)C.Br[C:20]1[CH:25]=[CH:24][C:23]([N:26]2[CH2:31][C@H:30]([CH3:32])[NH:29][C@H:28]([CH3:33])[CH2:27]2)=[CH:22][CH:21]=1>>[CH3:33][C@H:28]1[NH:29][C@@H:30]([CH3:32])[CH2:31][N:26]([C:23]2[CH:24]=[CH:25][C:20]([B:16]([OH:18])[OH:17])=[CH:21][CH:22]=2)[CH2:27]1

Participants

3

Reactant 2

HCID 667303611-(4-Bromophenyl)-cis-3,5-dimethylpiperazineHCID 66730443(4-(4-Isopropylpiperazin-1-yl)phenyl)boronic acid

Product 1

HCID 584863454-(cis-3,5-Dimethylpiperazin-1-yl)phenylboronic acid

Procedure

The title compound was synthesized according to the synthesis of 4-(4-isopropylpiperazin-1-yl)phenylboronic acid, except substituting 1-(4-bromophenyl)-cis-3,5-dimethylpiperazine (300 mg, 1.11 mmol). The reaction was quenched with sat. NH4Cl solution, extracted with EtOAc, dried over MgSO4, filtered, and concentrated to dryness. The title compound was isolated by silica gel chromatography (MeOH/CH2Cl2, 6:94 to 1:4) as a yellow solid (59 mg, 23%). 1H NMR (400 MHz, MeOD) δ 7.59 (d, J=6.2 Hz, 2H), 6.91 (d, J=8.2 Hz, 2H), 3.67-3.63 (m, 2H), 3.09-3.01 (m, 2H), 2.32 (t, J=11.6 Hz, 2H), 1.18 (d, J=6.4 Hz, 6H); MS ESI 235.1 [M+H]+, calcd for [C12H19BN2O2+H]+ 235.15.

Workup

  1. customThe title compound was synthesized
  2. customThe reaction was quenched with sat. NH4Cl solution
  3. extractionextracted with EtOAc
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated to dryness

Sources & evidence

ORD record
ord-994c431073fa4fb5a8e9b167475452c7
Source dataset
uspto-grants-2012_09
Patent number
US08263596B2

Reaction notes

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