1'-Benzyl-1H-spiro[furo[3,4-c]pyridine-3,4'-piperidine] → 1H-spiro[furo[3,4-c]pyridine-3,4'-piperidine]

HRID 1666962Notes

Reaction equation

HRID 1666962 reaction equation
C([N:8]1[CH2:13][CH2:12][C:11]2([C:17]3[CH:18]=[N:19][CH:20]=[CH:21][C:16]=3[CH2:15][O:14]2)[CH2:10][CH2:9]1)C1C=CC=CC=1>FC(F)(F)CO.[Pd]>[NH:8]1[CH2:9][CH2:10][C:11]2([C:17]3[CH:18]=[N:19][CH:20]=[CH:21][C:16]=3[CH2:15][O:14]2)[CH2:12][CH2:13]1

Participants

4

Reactant 1

HCID 597568161'-Benzyl-1H-spiro[furo[3,4-c]pyridine-3,4'-piperidine]

Product 1

HCID 467351631H-spiro[furo[3,4-c]pyridine-3,4'-piperidine]Yield 107.8%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 64092,2,2-TrifluoroethanolSolvent

Procedure

A solution of 0.22 g (0.78 mmol) 1′-benzyl-1H-spiro[furo[3,4-c]pyridine-3,4′-piperidine] in 8 ml 2,2,2-trifluoroethanol was purged with argon prior to adding 0.08 g (10 mol %) palladium on activated charcoal. The flask was evacuated, refilled with hydrogen gas and stirred under an atmosphere of hydrogen gas for 20 h. The catalyst was filtered off and washed with ethanol. The filtrate was concentrated to dryness to give the title compound (0.16 g, quantitative, purity of approximately 95%) as a light yellow amorphous solid.

Workup

  1. customThe flask was evacuated
  2. additionrefilled with hydrogen gas
  3. filtrationThe catalyst was filtered off
  4. washwashed with ethanol
  5. concentrationThe filtrate was concentrated to dryness

Sources & evidence

ORD record
ord-0818a89a049c40228ff42f59c9751872
Source dataset
uspto-grants-2011_10
Patent number
US08044202B2

Reaction notes

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