beta-trimethylsilylethyl (3RS,4RS)-4-(4-fluorophenyl)-3-(4-hydroxy-naphthalen-2-ylmethoxy)-piperidine-1-carboxylate → (3RS,4RS)-4-(4-fluorophenyl)-3-(4-hydroxy-naphthalen-2-ylmethoxy)-piperidine

HRID 1004940Notes

Reaction equation

HRID 1004940 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[CH2:13][CH2:12][N:11](C(OCC[Si](C)(C)C)=O)[CH2:10][CH:9]2[O:23][CH2:24][C:25]2[CH:34]=[C:33]([OH:35])[C:32]3[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=3)[CH:26]=2)=[CH:4][CH:3]=1>[F-].C([N+](CCCC)(CCCC)CCCC)CCC>[F:1][C:2]1[CH:3]=[CH:4][C:5]([CH:8]2[CH2:13][CH2:12][NH:11][CH2:10][CH:9]2[O:23][CH2:24][C:25]2[CH:34]=[C:33]([OH:35])[C:32]3[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=3)[CH:26]=2)=[CH:6][CH:7]=1

Participants

3

Reactant 1

HCID 53737733beta-trimethylsilylethyl (3RS,4RS)-4-(4-fluorophenyl)-3-(4-hydroxy-naphthalen-2-ylmethoxy)-piperidine-1-carboxylate

Product 1

HCID 22126660(3RS,4RS)-4-(4-fluorophenyl)-3-(4-hydroxy-naphthalen-2-ylmethoxy)-piperidineYield 83%

Reagents, catalysts & solvents 1

HCID 2724141Tetrabutylammonium FluorideSolvent

Procedure

70 mg (0.141 mmol) of β-trimethylsilylethyl (3RS,4RS)-4-(4-fluorophenyl)-3-(4-hydroxy-naphthalen-2-ylmethoxy)-piperidine-1-carboxylate were dissolved in 1.0 ml of tetrabutylammonium fluoride solution (1 M in tetrahydrofuran) and stirred at room temperature for one hour. Subsequently, the mixture was partitioned between methylene chloride and aqueous 5% sodium hydrogen carbonate solution, then the organic phase was dried over magnesium sulphate and finally the solvent was distilled off under reduced pressure. The crude product (72 mg) was purified by chromatography on silica gel with a 10:1:0.1 mixture of methylene chloride, methanol and ammonia as the eluent. There were obtained 41 mg (83% of theory) of (3RS,4RS)-4-(4-fluorophenyl)-3-(4-hydroxy-naphthalen-2-ylmethoxy)-piperidine as a colourless solid. MS: 352 (M+H)+.

Workup

  1. customSubsequently, the mixture was partitioned between methylene chloride and aqueous 5% sodium hydrogen carbonate solution
  2. dry with materialthe organic phase was dried over magnesium sulphate
  3. distillationfinally the solvent was distilled off under reduced pressure
  4. customThe crude product (72 mg) was purified by chromatography on silica gel with a 10:1:0.1 mixture of methylene chloride, methanol and ammonia as the eluent

Sources & evidence

ORD record
ord-06e1f17c882144dc93061bed6f8f15c7
Source dataset
uspto-grants-2000_04
Patent number
US06051712

Reaction notes

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