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Dimethylamine → N,N-dimethyl-[6-(6-phenylhexyl)-4,5,6,7-tetrahydrofuro[2,3-c]pyridin-2-ylmethyl]amine

HRID 611074
Notes
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Reaction equation

HRID 611074 reaction equation
[C:1]1([CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][N:13]2[CH2:18][CH2:17][C:16]3[CH:19]=[CH:20][O:21][C:15]=3[CH2:14]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH3:22][NH:23][CH3:24].[CH2:25]=O>C(O)(=O)C>[CH3:22][N:23]([CH2:25][C:20]1[O:21][C:15]2[CH2:14][N:13]([CH2:12][CH2:11][CH2:10][CH2:9][CH2:8][CH2:7][C:1]3[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=3)[CH2:18][CH2:17][C:16]=2[CH:19]=1)[CH3:24]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 674DimethylamineHCID 712FormaldehydeHCID 154293296-(6-Phenylhexyl)-4,5,6,7-tetrahydrofuro[2,3-c]pyridine

Product 1

HCID 19600092N,N-dimethyl-[6-(6-phenylhexyl)-4,5,6,7-tetrahydrofuro[2,3-c]pyridin-2-ylmethyl]amine

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Conditions

Temperature
100 °C

Procedure

To a solution of 0.120 g (0.423 mmol) of 6-(6-phenylhexyl)-4,5,6,7-tetrahydrofuro[2,3-c]pyridine in 10 ml of acetic acid, 0.046 g (0.51 mmol) of 50% aqueous dimethylamine and 0.041 g (0.51 mmol) of 37% aqueous formaldehyde were added, followed by stirring at 100° C. for 15 minutes. After the solvent was distilled off under reduced pressure, the residual solution was alkalified with aqueous sodium hydroxide and extracted with dichloromethane 3 times. The combined organic layer was dried over anhydrous magnesium sulfate; the solvent was distilled off under reduced pressure. The resulting crude product was purified by silica gel column chromatography (ethyl acetate to ethyl acetate/methanol=4/1) to yield the desired product.

Workup

  1. distillationAfter the solvent was distilled off under reduced pressure
  2. extractionextracted with dichloromethane 3 times
  3. dry with materialThe combined organic layer was dried over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled off under reduced pressure
  5. customThe resulting crude product was purified by silica gel column chromatography (ethyl acetate to ethyl acetate/methanol=4/1)

Sources & evidence

ORD record
ord-c4eec27d6d064b17bf84811104e9bd76
Source dataset
uspto-grants-1999_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05998433

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes