反应详情

温度

120 °C

A mixture of 4-bromo-N-tert-butyl-3-methylbenzenesulfonamide (1.207 g) and zinc cyanide (0.976 g) in DMF (8 ml) was purged with N2 for 20 min. Then PdCl2(dppf) was added. The reaction mixture was heated at 120° C. for 4 hours and showed no reaction. Pd(PPh3)4 was added and the reaction mixture was stirred at 120° C. over the weekend. The reaction mixture was diluted with EtOAc and washed with 5% LiCl solution (2×). The combined organic layers were dried (MgSO4), concentrated and purified by silica gel column chromatography to give 1.227 g N-tert-butyl-4-cyano-3-methylbenzenesulfonamide as a white solid.

1. customwas purged with N2 for 20 min
2. additionThen PdCl2(dppf) was added
3. customno reaction
4. washwashed with 5% LiCl solution (2×)
5. dry with materialThe combined organic layers were dried (MgSO4)
6. concentrationconcentrated
7. custompurified by silica gel column chromatography