Trimethylsilylacetylene → (5-Methyl-2-thienylethynyl)trimethylsilane

HRID 2232391

反応式

HRID 2232391 の反応式
[CH3:1][Si:2]([C:5]#[CH:6])([CH3:4])[CH3:3].I[C:8]1[S:9][C:10]([CH3:13])=[CH:11][CH:12]=1>C(N(CC)CC)C.C(OCC)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I>[CH3:1][Si:2]([CH3:4])([CH3:3])[C:5]#[C:6][C:8]1[S:9][C:10]([CH3:13])=[CH:11][CH:12]=1

参加物

7

反応物 2

HCID 66111TrimethylsilylacetyleneHCID 1400962-Iodo-5-methylthiophene

生成物 1

HCID 14643579(5-Methyl-2-thienylethynyl)trimethylsilane収率 92.6%

試薬・触媒・溶媒 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 178418476HCID 178418476、化合物触媒HCID 3283Diethyl Ether溶媒HCID 8471Triethylamine溶媒

実験手順

Under a dry nitrogen atmosphere 3.0 grams (0.031 mole) of trimethylsilylacetylene was added to a stirred mixture of 5.5 grams (0.025 mole) of 2-iodo-5-methylthiophene in 50 ml of triethylamine. To this mixture was added approximately 0.05 gram of dichlorobis(triphenylphosphine)palladium (II) and approximately 0.05 gram of copper (I) iodide. The resultant mixture was stirred at room temperature for approximately 18 hours. The triethylamine was removed from the mixture by evaporation under reduced pressure leaving a residue. This residue was dissolved in diethyl ether and the resultant solution was washed in succession with an aqueous, 10% ammonium chloride solution, water, and an aqueous, saturated sodium chloride solution. The washed organic solution was dried over anhydrous sodium sulfate and was filtered. The filtrate was evaporated under reduced pressure leaving a residue. This residue was purified by column chromatography on silica gel, eluting with n-hexane, to yield 4.5 grams of 1-trimethylsilyl-2-(5-methylthien-2-yl)ethyne as an oil.

後処理

  1. customThe triethylamine was removed from the mixture by evaporation under reduced pressure
  2. customleaving a residue
  3. washthe resultant solution was washed in succession with an aqueous, 10% ammonium chloride solution, water
  4. dry with materialThe washed organic solution was dried over anhydrous sodium sulfate
  5. filtrationwas filtered
  6. customThe filtrate was evaporated under reduced pressure
  7. customleaving a residue
  8. customThis residue was purified by column chromatography on silica gel
  9. washeluting with n-hexane

出典と根拠

ORDレコード
ord-665f763b6cd64fbdabbccb506c1f9b96
出典データセット
uspto-grants-1988_11
特許番号
US04788207

関連ノート

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