Hydrochloric Acid → 2-Acetamido-1,3-bis(tert-butyldimethylsilyloxy)-2-(2-(4-(1hydroxy-5-phenylpentyl)phenyl)ethyl)propane

HRID 323804Notes

Reaction equation

HRID 323804 reaction equation
[Mg].Br[CH2:3][CH2:4][CH2:5][CH2:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.[C:13]([NH:16][C:17]([CH2:36][CH2:37][C:38]1[CH:43]=[CH:42][C:41]([CH:44]=[O:45])=[CH:40][CH:39]=1)([CH2:27][O:28][Si:29]([C:32]([CH3:35])([CH3:34])[CH3:33])([CH3:31])[CH3:30])[CH2:18][O:19][Si:20]([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21])(=[O:15])[CH3:14].Cl>O1CCCC1>[C:13]([NH:16][C:17]([CH2:36][CH2:37][C:38]1[CH:43]=[CH:42][C:41]([CH:44]([OH:45])[CH2:3][CH2:4][CH2:5][CH2:6][C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)=[CH:40][CH:39]=1)([CH2:27][O:28][Si:29]([C:32]([CH3:33])([CH3:34])[CH3:35])([CH3:31])[CH3:30])[CH2:18][O:19][Si:20]([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21])(=[O:15])[CH3:14]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 2596681-Bromo-4-phenylbutaneHCID 5462224MagnesiumHCID 155166782-Acetamido-1,3-bis(tert-butyldimethylsilyloxy)-2-(2-(4-formylphenyl)ethyl)propane

Product 1

HCID 155166792-Acetamido-1,3-bis(tert-butyldimethylsilyloxy)-2-(2-(4-(1hydroxy-5-phenylpentyl)phenyl)ethyl)propaneYield 83.2%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent3×

Procedure

To a solution of magnesium (0.27 g) in anhydrous tetrahydrofuran (5 ml) was dropwise added a solution of 1-bromo-4-phenylbutane (2.35 g) in anhydrous tetrahydrofuran (5 ml) under a nitrogen atmosphere, and the mixture was stirred for 1.5 hours. To this solution was dropwise added a solution of 2-acetamido-1,3-bis(tert-butyldimethylsilyloxy)-2-(2-(4-formylphenyl)ethyl)propane (1.2 g) in anhydrous tetrahydrofuran (15 ml) and the mixture was stirred for 1 hour. 3% Hydrochloric acid was poured into the reaction mixture and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate and the solvent was distilled away under reduced pressure. The obtained residue was purified by silica gel column chromatography (eluent; hexane: ethyl acetate=2:1) to give the title compound (1.27 g) as a colorless transparent oily substance.

Workup

  1. stirringthe mixture was stirred for 1 hour
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe ethyl acetate layer was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. distillationthe solvent was distilled away under reduced pressure
  6. customThe obtained residue was purified by silica gel column chromatography (eluent; hexane: ethyl acetate=2:1)

Sources & evidence

ORD record
ord-ec9877793fb14af1bd41820b95af093c
Source dataset
uspto-grants-2001_04
Patent number
US06214873B1

Reaction notes

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