Trimethylsilylacetylene → ((4-(tert-Butyl)phenyl)ethynyl)trimethylsilane
반응식
Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]([CH3:11])([CH3:10])[CH3:9])=[CH:4][CH:3]=1.[CH3:12][Si:13]([C:16]#[CH:17])([CH3:15])[CH3:14]>C(N(CC)CC)C>[CH3:12][Si:13]([C:16]#[C:17][C:2]1[CH:7]=[CH:6][C:5]([C:8]([CH3:11])([CH3:10])[CH3:9])=[CH:4][CH:3]=1)([CH3:15])[CH3:14]참가 물질
4
반응 조건
- 온도
- 67.5 °C
실험 절차
A stirred mixture of 3.05 g (14.31 mmol) of 4-tert-butyl-bromobenzene (Compound 20), 1.41 g (14.39 mmol) of trimethylsilylacetylene (Compound 16), 139 mg (0.13 mmol) of cuprous iodide, 293 mg (0.42 mmol) of bis(triphenyophosphine)palladium (II) chloride and 3 ml of triethylamine was flushed with nitrogen and then heated under nitrogen at 65-70 degrees C. for 20 hours. The reaction mixture was stirred at room temperature for a further 4 hours and the triethylamine then removed under vacuum. The residue was purified by flash chromatography (silica; hexanes) to give the title compound as a colorless oil. PMR (CDCl3): & 0.26 (9H, s), 1.31 (9H, s), 7.32 (2H, d, J~8.2 Hz), 7.42 (2H, d, J~8.2 Hz).