Sodium Carbonate → (1S,3S,4S)-3-[(benzyloxy)methyl]-4-{[tert-butyl(dimethyl)silyl]oxy}cyclopentanol

HRID 1747602Notes

Reaction equation

HRID 1747602 reaction equation
[CH2:1]([O:8][CH2:9][C:10]1[C@@H:14]([O:15][Si:16]([C:19]([CH3:22])([CH3:21])[CH3:20])([CH3:18])[CH3:17])[CH2:13][C@@H:12]([OH:23])[CH:11]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(=O)([O-])[O-].[Na+].[Na+]>CCOC(C)=O.[Pd]>[CH2:1]([O:8][CH2:9][C@H:10]1[C@@H:14]([O:15][Si:16]([C:19]([CH3:21])([CH3:20])[CH3:22])([CH3:18])[CH3:17])[CH2:13][C@@H:12]([OH:23])[CH2:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 2

HCID 10340Sodium CarbonateHCID 66797876(1R,4S)-3-[(benzyloxy)methyl]-4-{[tert-butyl(dimethyl)silyl]-oxy}cyclopent-2-en-1-ol

Product 1

HCID 66798092(1S,3S,4S)-3-[(benzyloxy)methyl]-4-{[tert-butyl(dimethyl)silyl]oxy}cyclopentanolYield 94.6%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8857Ethyl AcetateSolvent

Procedure

A suspension of (1R,4S)-3-[(benzyloxy)methyl]-4-{[tert-butyl(dimethyl)silyl]-oxy}cyclopent-2-en-1-ol (7.54 g, 0.0225 mol) (Ruediger, E; Martel, A; Meanwell, N; Solomon, C; Turmel, B. Tetrahedron Lett. 2004, 45, 739-742), sodium carbonate (5.7 g, 0.054 mol) and 10% Pd/C (2 g, 0.002 mol) in EtOAc (90 mL) was stirred under an atmosphere of hydrogen for three hours. The reaction flask was purged with nitrogen and the mixture was filtered through celite with EtOAc. The filtrate was concentrated to obtain 7.16 g (76%) of the title compound as a 4:1 mixture of diastereomers (desired:undesired).

Workup

  1. customThe reaction flask was purged with nitrogen
  2. filtrationthe mixture was filtered through celite with EtOAc
  3. concentrationThe filtrate was concentrated

Sources & evidence

ORD record
ord-f14dd70489254321860b6ea9e23f0f8f
Source dataset
uspto-grants-2015_10
Patent number
US09150525B2

Reaction notes

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