反应详情

温度

70 °C

A mixture of N-((5-bromo-2-chloropyridin-4-yl)methylene)-2-methylpropan-2-amine (530 mg, 1.9 mmol), tert-butyldimethyl(2-propynyloxy)silane (0.59 mL, 2.9 mmol), NiCl2(DPPP) (52 mg, 0.1 mmol), and zinc (252 mg, 3.9 mmol) in acetonitrile (5 mL) was heated at 70° C. under an atmosphere of nitrogen. The cooled reaction mixture was diluted with methylene chloride (50 mL), filtered over Celite, and evaporated in vacuo to afford a residue that was purified by flash chromatography (silica, 12 g, ISCO, 0-40% ethyl acetate in heptane) to afford the title compound as an orange waxy solid (340 mg, 57%), which was used in the next step without further purification.

1. customThe cooled reaction mixture
2. filtrationfiltered over Celite
3. customevaporated in vacuo
4. customto afford a residue that
5. customwas purified by flash chromatography (silica, 12 g, ISCO, 0-40% ethyl acetate in heptane)