Cyclization Reaction of 2-Azido-1-(2-hydroxyphenyl)ethanones with Terminal Alkynoates Catalyzed by 4-Dimethylaminopyridine (DMAP): Synthesis of 2-Aminobenzofuran-3(2H)-one Derivatives
作者:Ling-Guo Meng、Ni-Lin Ge、Ming-Ming Yang、Lei Wang
DOI:10.1002/ejoc.201100250
日期:2011.7
An unexpected cyclization reaction of 2-azido-1-(2-hydroxyphenyl)ethanones with terminal alkynoates catalyzed by 4-dimethylaminopyridine (DMAP) was developed, and 2-aminobenzofuran-3(2H)-one derivatives were obtained in moderate to good yields under mild reaction conditions within 2 h. The scope and limitations of the cyclization reactions were also investigated.
2-叠氮基-1-(2-羟基苯基)乙酮与末端炔酸酯在 4-二甲氨基吡啶 (DMAP) 催化下发生意想不到的环化反应,并以中等至良好的收率获得了 2-氨基苯并呋喃-3(2H)-酮衍生物在温和的反应条件下,2 小时内。还研究了环化反应的范围和局限性。