Trimethylsilylacetylene → 2,3-dihydro-6-(2-trimethylsilylethynyl)-(4H)-1-benzothiopyran-4-one

HRID 618063ノート

反応式

HRID 618063 の反応式
Br[C:2]1[CH:3]=[CH:4][C:5]2[S:10][CH2:9][CH2:8][C:7](=[O:11])[C:6]=2[CH:12]=1.[CH3:13][Si:14]([C:17]#[CH:18])([CH3:16])[CH3:15]>C1COCC1.N(CC)CC.[Cu]I.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>[CH3:13][Si:14]([CH3:16])([CH3:15])[C:17]#[C:18][C:2]1[CH:3]=[CH:4][C:5]2[S:10][CH2:9][CH2:8][C:7](=[O:11])[C:6]=2[CH:12]=1

参加物

7

反応物 2

HCID 66111TrimethylsilylacetyleneHCID 139537366-Bromo-2,3-dihydro-4H-1-benzothiopyran-4-one

生成物 1

HCID 154909942,3-dihydro-6-(2-trimethylsilylethynyl)-(4H)-1-benzothiopyran-4-one

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 8021Diethylamine溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

A solution of 1.00 g (4.11 mmol) 2,3-dihydro-6-bromo-(4H)-1-benzothiopyran-4-one and 78.3 mg (0.41 mmol) CuI in 15.0 ml THF and 6.0 ml Et2NH was sparged with argon for 5 minutes. To this solution was added 2.0 ml (1.39 g, 14.2 mmol) of (trimethylsilyl)acetylene followed by 288.5 mg (0.41 mmol) of bis(triphenylphosphine)palladium(II) chloride. The resulting dark solution was stirred at room temperature for 3 days and then filtered through a pad of Celite, which was washed with EtOAc. The filtrate was washed with H2O and saturated aqueous NaCl before being dried over MgSO4. The title compound was isolated as an orange oil by column chromatography (4% EtOAc-hexanes). 1H NMR (CDCl3): δ 8.13 (1H, d, J=1.9 Hz), 7.36 (1H, dd, J=2.1, 8.2 Hz), 7.14 (1H, d, J=8.2 Hz), 3.19 (2H, d, J=6.3 Hz), 2.91 (2H, d, J=6.3 Hz), 0.21 (9H, s).

後処理

  1. filtrationfiltered through a pad of Celite, which
  2. washwas washed with EtOAc
  3. washThe filtrate was washed with H2O and saturated aqueous NaCl
  4. dry with materialbefore being dried over MgSO4

出典と根拠

ORDレコード
ord-ef9059700dc9418da487895a6c6a4fa5
出典データセット
uspto-grants-1999_09
特許番号
US05952345

反応ノート

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