A New Route to Multifunctionalized p-Terphenyls and Heteroaryl Analogues via [5C + 1C(N)] Annulation Strategy
摘要:
p-Terphenyls and heteroaryl analogues including bipyridines were prepared via [5C + 1C(N)] annulation of alpha-aryl-alpha-alkenoyl ketene-(S,S)-acetals (five carbon 1,5-bielectrophilic species) with nitroethane or ammonium acetate, The reaction features mild conditions, multisubstitution, and functional group tolerance and is metal catalyst free. The present protocol provides, a new alternative to the conventional methodologies for the synthesis of teraryls.
A New Route to Multifunctionalized <i>p</i>-Terphenyls and Heteroaryl Analogues via [5C + 1C(N)] Annulation Strategy
作者:Lei Zhang、Fushun Liang、Xin Cheng、Qun Liu
DOI:10.1021/jo802318p
日期:2009.1.16
p-Terphenyls and heteroaryl analogues including bipyridines were prepared via [5C + 1C(N)] annulation of alpha-aryl-alpha-alkenoyl ketene-(S,S)-acetals (five carbon 1,5-bielectrophilic species) with nitroethane or ammonium acetate, The reaction features mild conditions, multisubstitution, and functional group tolerance and is metal catalyst free. The present protocol provides, a new alternative to the conventional methodologies for the synthesis of teraryls.