Boron trifluoride etherate → HCID 46205792, compound

HRID 909779Notes

Reaction equation

HRID 909779 reaction equation
[SiH](CC)(CC)CC.B(F)(F)F.CCOCC.[CH2:17]([O:24][C:25]1[CH:30]=[CH:29][C:28]([CH:31]([C:33]2[CH:38]=[CH:37][C:36]([O:39][CH2:40][CH3:41])=[CH:35][CH:34]=2)O)=[CH:27][C:26]=1[Br:42])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.C(=O)([O-])[O-].[Na+].[Na+]>C(Cl)(Cl)Cl>[CH2:17]([O:24][C:25]1[CH:30]=[CH:29][C:28]([CH2:31][C:33]2[CH:34]=[CH:35][C:36]([O:39][CH2:40][CH3:41])=[CH:37][CH:38]=2)=[CH:27][C:26]=1[Br:42])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Participants

6

Reactant 4

HCID 8000Boron trifluoride etherateHCID 10340Sodium CarbonateHCID 12052TriethylsilaneHCID 46205467HCID 46205467, compound

Product 1

HCID 46205792HCID 46205792, compoundYield 105.5%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

Then, Et3SiH (6.7 mL, 0.042 mol) and BF3.Et2O (2.7 mL, 0.021 mol) were added sequentially to a chloroform (90 mL) solution of [4-(benzyloxy)-3-bromophenyl](4-ethoxyphenyl)methanol (8.7 g, 0.021 mol) at −15° C. After stirred for one hour, the reaction mixture was warmed to room temperature. After the reaction mixture was added with a saturated sodium carbonate aqueous solution and extracted with chloroform, the organic layer was washed with brine and dried with anhydrous magnesium sulfate. After the desiccant was filtered off, the residue obtained by evaporating the solvent under reduced pressure was purified by silica gel column chromatography (hexane:ethyl acetate=10:1) to obtain a colorless oily title compound (8.8 g, quant).

Workup

  1. extractionextracted with chloroform
  2. washthe organic layer was washed with brine
  3. dry with materialdried with anhydrous magnesium sulfate
  4. filtrationAfter the desiccant was filtered off
  5. customthe residue obtained
  6. customby evaporating the solvent under reduced pressure
  7. customwas purified by silica gel column chromatography (hexane:ethyl acetate=10:1)

Sources & evidence

ORD record
ord-78e383c1ac27486dbac276e7870127f6
Source dataset
uspto-grants-2011_09
Patent number
US08017792B2

Reaction notes

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