Nickel-Catalyzed [3 + 2 + 2] Cycloaddition of Ethyl Cyclopropylideneacetate and Heteroatom-Substituted Alkynes: Application to Selective Three-Component Reaction with 1,3-Diynes
作者:Ryu Yamasaki、Natsuki Terashima、Ikuo Sotome、Shunsuke Komagawa、Shinichi Saito
DOI:10.1021/jo902251m
日期:2010.1.15
Heteroatom-substituted alkynes such as ynol ethers and ynamines turned out to be decent substrates for the Ni-catalyzed [3 + 2 + 2] cocyclization of ethyl cyclopropylideneacetate (1). The three-component cocyclization of 1, 1,3-diynes, and heteroatom-substituted alkynes also proceeded selectively. The study provided an efficient method for the synthesis of heteroatom-substituted cycloheptadiene and related compounds
杂原子取代的炔烃(例如,炔醇醚和炔胺)被证明是Ni催化[3 + 2 + 2]环乙叉基乙酸乙酯的共环化反应的合适底物(1)。的三组分cocyclization 1,1,3-二炔,和杂原子取代的炔烃也选择性进行。该研究为杂原子取代的环庚二烯及相关化合物的合成提供了一种有效的方法。