Transition-Metal-Catalyzed Sequential Cross-Coupling of Bis(iodozincio)methane and -ethane with Two Different Organic Halides
作者:Hideaki Yoshino、Narihiro Toda、Masami Kobata、Katsumi Ukai、Koichiro Oshima、Kiitiro Utimoto、Seijiro Matsubara
DOI:10.1002/chem.200500767
日期:2006.1.11
Bis(iodozincio)methane, prepared from diiodomethane and zinc, reacts with an organic halide in the presence of a transition-metal catalyst to give an iodozinciomethylenated compound; this then reacts with another organic halide to form a C--C bond. The overall process connects two electrophiles with one carbon atom. Bis(iodozincio)ethane can also undergo this transformation, yielding a new stereogenic
由二碘甲烷和锌制得的双(碘锌)甲烷与有机卤化物在过渡金属催化剂存在下反应,生成碘锌甲基化的化合物;然后它与另一种有机卤化物反应形成CC键。整个过程用一个碳原子连接两个亲电试剂。双(碘嗪)乙烷也可以进行这种转化,产生一个新的立体异构中心。使用手性钯催化剂研究了该立体异构中心的不对称诱导。