Benzaldehyde → HCID 15829074, compound

HRID 1654773Notes

Reaction equation

HRID 1654773 reaction equation
C[Si](C)(C)N[Si](C)(C)C.[Li].[S:11]1[CH:15]=[CH:14][CH:13]=[C:12]1[C:16]#[CH:17].[CH:18](=[O:25])[C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1>O1CCCC1>[S:11]1[CH:15]=[CH:14][CH:13]=[C:12]1[C:16]#[C:17][CH:18]([C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1)[OH:25]

Participants

5

Reactant 3

HCID 240BenzaldehydeHCID 52462582-EthynylthiopheneHCID 57426343Lithium bis(trimethylsilyl)amide

Product 1

HCID 15829074HCID 15829074, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent3×

Procedure

Place lithium hexamethyldisilazane (3 mL of a 1M solution in tetrahydrofuran, 3 mmol) under argon atmosphere and cool to 0° C. Add (thiophen-2-yl)acetylene (324 mg, 3 mmol) in tetrahydrofuran (20 mL) and stir at 0° C. until anion formation is complete. Add a solution of benzaldehyde (297 mg, 2.8 mmol) in tetrahydrofuran, remove the ice bath and stir at room temperature until the reaction is complete. Pour onto ethyl ether and water, separate the organic layer and dry (MgSO4). Filter and evaporate the solvent in vacuo. Purify by silica gel chromatography to yield the title compound.

Workup

  1. customremove the ice bath
  2. additionPour onto ethyl ether and water
  3. customseparate the organic layer
  4. dry with materialdry (MgSO4)
  5. filtrationFilter
  6. customevaporate the solvent in vacuo
  7. customPurify by silica gel chromatography

Sources & evidence

ORD record
ord-90eabbf02df34d76aceb910ad5df6613
Source dataset
uspto-grants-1995_04
Patent number
US05409942

Reaction notes

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