Regio- and Chemoselective Addition of Mixed Copper, Zinc Benzylic Organometallics to Functionalized Pyridinium Salts: A Facile Synthesis of Functionalized 4-Benzylpyridines
作者:Tai-Li Shing、Win-Long Chia、Min-Jen Shiao、Tay-Yuan Chau
DOI:10.1055/s-1991-26589
日期:——
2′,3-Disubstituted 4-benzylpyridines 4 were synthesized in good yield by reaction of mixed copper, zinc benzylic organometallics 1 with 3-substituted 1-(ethoxycarbonyl)pyridinium chlorides 2 followed by sulfur oxidation under reflux in decalin.
合成了2′,3-二取代的4-苄基吡啶4,产率良好,反应是将混合的铜、锌苄基有机金属化合物1与3-取代的1-(乙氧基羧基)吡啶铵盐氯化物2反应,随后在去缪烯中回流氧化硫。