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

HRID 1466275Notes

Reaction equation

HRID 1466275 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-e814a5fa25c548e6863f5437066f3260
Source dataset
uspto-grants-2015_04
Patent number
US08999968B2

Reaction notes

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