1,4-Addition of Bis(iodozincio)methane to α,β-Unsaturated Ketones: Chemical and Theoretical/Computational Studies
作者:Mutsumi Sada、Taniyuki Furuyama、Shinsuke Komagawa、Masanobu Uchiyama、Seijiro Matsubara
DOI:10.1002/chem.201000738
日期:2010.9.10
in a one‐pot reaction. In contrast, 1,4‐addition of the dizinc reagent to enones carrying an acyloxy group proceeded very efficiently without any additive. In this case, the product was a 1,3‐diketone, which was generated in a novel tandem reaction. A theoretical/computational study indicates that the whole reaction pathway is exothermic, and that two zinc atoms of bis(iodozincio)methane accelerate each
1,4-将双(碘嗪)甲烷添加到简单的α,β-不饱和酮中进展不顺利; 根据DFT计算,反应略有吸热。在三甲基氯硅烷存在下,反应有效进行,得到β-锌甲基甲基酮的甲硅烷基烯醇醚。与c 的甲硅烷基烯醇醚的Zn键可以在交叉偶联反应中使用,以形成另一种C 一锅反应中的C键。相反,在没有任何添加剂的情况下,二锌试剂向带有酰氧基的烯酮的1,4加成反应非常有效。在这种情况下,产物是1,3-二酮,它是通过新型串联反应生成的。理论/计算研究表明,整个反应路径是放热的,并且双(碘嗪)甲烷的两个锌原子作为有效的路易斯酸协同促进了每个步骤。