Acetic Acid → 2-[methyl({4-[4-(3-pyrrolidin-1-ylpropoxy)phenyl]tetrahydro-2H-pyran-4-yl}methyl)amino]ethanol

HRID 273029Notes

Reaction equation

HRID 273029 reaction equation
[CH3:1][NH:2][CH2:3][C:4]1([C:10]2[CH:15]=[CH:14][C:13]([O:16][CH2:17][CH2:18][CH2:19][N:20]3[CH2:24][CH2:23][CH2:22][CH2:21]3)=[CH:12][CH:11]=2)[CH2:9][CH2:8][O:7][CH2:6][CH2:5]1.[CH2:25]1OC(O)C[O:27][CH:26]1O.CC(O)=O.C(=O)([O-])[O-].[Na+].[Na+]>C(Cl)Cl>[CH3:1][N:2]([CH2:3][C:4]1([C:10]2[CH:15]=[CH:14][C:13]([O:16][CH2:17][CH2:18][CH2:19][N:20]3[CH2:24][CH2:23][CH2:22][CH2:21]3)=[CH:12][CH:11]=2)[CH2:9][CH2:8][O:7][CH2:6][CH2:5]1)[CH2:25][CH2:26][OH:27]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 10340Sodium CarbonateHCID 186078Glycolaldehyde dimerHCID 11674363Methyl-{4-[4-(3-pyrrolidin-1-ylpropoxy)phenyl]tetrahydropyran-4-ylmethyl}amine

Product 1

HCID 598373822-[methyl({4-[4-(3-pyrrolidin-1-ylpropoxy)phenyl]tetrahydro-2H-pyran-4-yl}methyl)amino]ethanolYield 56.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

A solution of methyl-{4-[4-(3-pyrrolidin-1-ylpropoxy)phenyl]-tetrahydropyran-4-ylmethyl}amine (350 mg, 1.05 mmol), glycolaldehyde dimer (130 mg, 1.05 mmol) and AcOH (0.15 ml, 2.1 mmol) in DCM (5 ml) was stirred at room temperature for 18 hours. Saturated aqueous sodium carbonate (10 ml) and DCM (10 ml) were added and the mixture was shaken and partitioned. The aqueous phase was extracted with DCM (2×10 ml) and the combined organics dried (K2CO3), filtered and concentrated in vacuo. The crude product was purified by flash chromatography on silica gel eluting with dichloromethane:methanol:ammonia (92:8:1) to provide the title compound as a clear colourless oil (223 mg, 0.59 mmol, 56%). 1H NMR (400 MHz, CDCl3) δ 1.70-1.90 (m, 6H), 1.96 (s, 3H), 2.00 (quintet, 2H), 2.14 (m, 2H), 2.37 (t, 2H), 2.40-2.60 (m, 6H), 2.65 (t, 2H), 3.35 (t, 2H), 3.50 (m, 2H), 3.76 (m, 2H), 4.01 (t, 2H), 6.89 (d, 2H), 7.19 (d, 2H). HRMS ESI+ m/z 377.2796 [MH]+.

Workup

  1. custompartitioned
  2. extractionThe aqueous phase was extracted with DCM (2×10 ml)
  3. dry with materialthe combined organics dried (K2CO3)
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe crude product was purified by flash chromatography on silica gel eluting with dichloromethane:methanol:ammonia (92:8:1)

Sources & evidence

ORD record
ord-0a9ad4a7ff0f48d186ee78c8a946e9b6
Source dataset
uspto-grants-2008_11
Patent number
US07456164B2

Reaction notes

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