4-(4-Bromophenyl)-1-methylpiperidine → 1-Methyl-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)piperidine

HRID 447459Notes

Reaction equation

HRID 447459 reaction equation
C(OC1CCN([C:11]2[CH:16]=[CH:15][C:14]([B:17]3[O:21][C:20]([CH3:23])([CH3:22])[C:19]([CH3:25])([CH3:24])[O:18]3)=[CH:13][CH:12]=2)CC1)(=O)C.BrC1C=CC([CH:33]2[CH2:38][CH2:37][N:36]([CH3:39])[CH2:35][CH2:34]2)=CC=1>CCOC(C)=O.O>[CH3:39][N:36]1[CH2:37][CH2:38][CH:33]([C:11]2[CH:12]=[CH:13][C:14]([B:17]3[O:18][C:19]([CH3:24])([CH3:25])[C:20]([CH3:22])([CH3:23])[O:21]3)=[CH:15][CH:16]=2)[CH2:34][CH2:35]1

Participants

5

Reactant 2

HCID 213638774-(4-Bromophenyl)-1-methylpiperidineHCID 667303481-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)piperidin-4-yl acetate

Product 1

HCID 584862351-Methyl-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)piperidine

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Procedure

The title compound was synthesized according to the method described for the synthesis of 1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)piperidin-4-yl acetate, except substituting 4-(4-bromophenyl)-1-methylpiperidine (236 mg, 0.93 mmol). The reaction was then allowed to cool to rt and was diluted with EtOAc and water was added. The resulting mixture was extracted with EtOAc and the combined organic extracts were washed with brine, dried over MgSO4 and concentrated to give a viscous brown solid (236 mg, used without further purification). 1H NMR (400 MHz, MeOD) δ 7.70 (d, J=7.5 Hz, 2H), 7.25 (d, J=7.5 Jz, 2H), 3.26-3.23 (m, 2H), 2.69-2.64 (m, 1H), 2.60-2.54 (m, 5H), 1.92-1.91 (m, 4H), 1.33 (s, 12H); MS ESI 302.2 [M+Na]+, calcd for [C18H28BNO2+Na]+ 302.22.

Workup

  1. additionwas added
  2. extractionThe resulting mixture was extracted with EtOAc
  3. washthe combined organic extracts were washed with brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated
  6. customto give
  7. customa viscous brown solid (236 mg, used without further purification)

Sources & evidence

ORD record
ord-0e440edd3a5749c08dc4aa2059eba5d7
Source dataset
uspto-grants-2013_07
Patent number
US08481525B2

Reaction notes

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