中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-苯基吡啶 | 2-phenylpyridine | 1008-89-5 | C11H9N | 155.199 |
4-甲基-2-苯基吡啶 | 4-methyl-2-phenylpyridine | 3475-21-6 | C12H11N | 169.226 |
An arylation protocol for pyridines is described, via the ring‐opened Zincke intermediate. Treatment of pyridines with triflic anhydride and a secondary amine produces an azahexatriene species, which undergoes regioselective Pd‐catalyzed arylation at the putative C4 position. Recyclization then provides the pyridine products. Alternatively, metal‐free arylation with a diaryliodonium salt is selective for the pyridine