BF<sub>3</sub>·Et<sub>2</sub>O-Catalyzed Direct Carbon−Carbon Bond Formation of α-EWG Ketene-(<i>S</i>,<i>S</i>)-Acetals and Alcohols and Synthesis of Unsymmetrical Biaryls
作者:Qian Zhang、Shaoguang Sun、Jianglei Hu、Qun Liu、Jing Tan
DOI:10.1021/jo061775e
日期:2007.1.1
efficient BF3·OEt2-catalyzed formal dehydration C−C coupling reaction between readily available α-EWG ketene-(S,S)-acetals and various alcohols via direct substitution of the hydroxy group in alcohols has been developed. On the basis of this C−C coupling reaction, a series of alkylated α-EWG ketene-(S,S)-acetals and functionalized 1,4-pentanedienes were prepared in high to excellent yields and the unsymmetrical
通过直接取代醇中的羟基,开发了一种高效的BF 3 ·OEt 2催化的形式脱水C-C偶联反应,该反应易于获得的α-EWG烯酮-(S,S)-乙缩醛与各种醇之间。在此C-C偶联反应的基础上,以高至优异的收率制备了一系列烷基化的α-EWG乙烯酮-(S,S)-乙缩醛和官能化的1,4-戊二烯,并以良好的收率合成了不对称联芳基通过一锅法环化芳构化过程从生成的1,4-戊二烯和硝基烷烃中提取。