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Sodium hydride → (R)-tert-butyl 3-((R)-(2-(tert-butyldimethylsilyloxy)ethoxy)(3-chlorophenyl)methyl)piperidine-1-carboxylate

HRID 451672
Notes
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Reaction equation

HRID 451672 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C@H:8]([OH:22])[C@@H:9]2[CH2:14][CH2:13][CH2:12][N:11]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[CH2:10]2)[CH:5]=[CH:6][CH:7]=1.[H-].[Na+].Br[CH2:26][CH2:27][O:28][Si:29]([C:32]([CH3:35])([CH3:34])[CH3:33])([CH3:31])[CH3:30]>C1COCC1>[Si:29]([O:28][CH2:27][CH2:26][O:22][C@@H:8]([C:4]1[CH:5]=[CH:6][CH:7]=[C:2]([Cl:1])[CH:3]=1)[C@@H:9]1[CH2:14][CH2:13][CH2:12][N:11]([C:15]([O:17][C:18]([CH3:19])([CH3:21])[CH3:20])=[O:16])[CH2:10]1)([C:32]([CH3:35])([CH3:34])[CH3:33])([CH3:31])[CH3:30]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 3608067(2-Bromoethoxy)-tert-butyldimethylsilaneHCID 44555022tert-Butyl (R)-3-((R)-(3-chlorophenyl)(hydroxy)methyl)piperidine-1-carboxylate

Product 1

HCID 59201708(R)-tert-butyl 3-((R)-(2-(tert-butyldimethylsilyloxy)ethoxy)(3-chlorophenyl)methyl)piperidine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 8028
Tetrahydrofuran
Solvent

Conditions

Temperature
80 °C

Procedure

To a mixture of (R)-tert-butyl 3-((R)-(3-chlorophenyl)(hydroxy)methyl)piperidine-1-carboxylate (0.1964 g, 0.60 mmol, 1.0 equiv) and 60% NaH in oil (0.753 g, 18.8 mmol, 31 equiv) in THF (15 mL) was added (2-bromoethoxy)-tert-butyldimethylsilane (2.042 g, 8.5 mmol, 14 equiv). The resulting mixture was heated at 80° C. for 19 h and then quenched with water, extracted with EtOAc and dried over Na2SO4. After the solvent was removed, the crude product was used in the next step without further purification.

Workup

  1. customquenched with water
  2. extractionextracted with EtOAc
  3. dry with materialdried over Na2SO4
  4. customAfter the solvent was removed
  5. customthe crude product was used in the next step without further purification

Sources & evidence

ORD record
ord-ba8143588d5240ffa1729f6e19ad5135
Source dataset
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08487108B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes