Palladium-Catalyzed Addition of Tetragermetanes to Alkynes
Palladium-Catalyzed Addition of Tetragermetanes to Alkynes
复制标题
钯催化四锗烷与炔烃的加成
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Kaoru Suzuki
中科院分区：
文献类型：
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作者：
K. Mochida;Katsuhiko Hirakue;Kaoru Suzuki
1,1,2,2,3,3,4,4-八烷基异丙基四萜甲烷（iPr2Ge）4在钯配合物存在下与各种炔在120℃下反应生成1,2,3,4-四氢-1,2,3,4-四萜烯，Δ4-1,2,3-三烯和1h -烯，具体取决于炔的种类和所使用的钯配合物。端炔比内炔反应性强。Pd(dba)2-ETBP和Pd(acac)2-ETBP体系是有效的催化剂。讨论了炔插入（iPr2Ge）4锗锗键的反应机理。
1,1,2,2,3,3,4,4-Octaisopropyltetragermetane (iPr2Ge)4 reacted with various alkynes in the presence of palladium complexes at 120 °C to afford 1,2,3,4-tetrahydro-1,2,3,4-tetragermins, Δ4-1,2,3-trigemolene, and 1H-germoles, depending on the kind of alkyne and the palladium complex employed. Terminal alkynes are more reactive than internal ones. Pd(dba)2-ETBP and Pd(acac)2-ETBP systems were found to serve as efficient catalysts. The mechanism of alkyne insertion reactions into the germanium–germanium bonds of (iPr2Ge)4 is discussed.