Monohalogenation of zirconacyclopentane complexes via alkylalkoxyzirconocene
Monohalogenation of zirconacyclopentane complexes via alkylalkoxyzirconocene
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烷基烷氧基二茂锆单卤化环戊烷配合物
DOI：
10.1246/cl.1992.1693
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发表时间：
1992
影响因子：
1.6
通讯作者：
N. Suzuki
中科院分区：
文献类型：
--
作者：
Tamotsu Takahashi;K. Aoyagi;R. Hara;N. Suzuki
锆上选择性丁烯-丁烯偶联产物反式-3,4-二乙基锆环戊烷配合物经甲醇和溴处理后，得到选择性单溴化产物2-乙基-3-甲基-1-溴戊烷，收率89%，立体选择性高。同样，锆上的非共轭二烯环化产物也选择性地转化为单卤化化合物。这些选择性单卤化反应是通过烷基氧基锆新世配合物进行的。
Treatment of trans-3,4-diethylzirconacyclopentane complex, which was a selective butene-butene coupling product on zirconium, with methanol followed by bromine gave selectively monobromination product, 2-ethyl-3-methyl-1-bromopentane, in 89% yield with high stereoselectivity. Similarly, non-conjugated diene cyclization products on zirconium were also selectively converted into monohalogenated compounds. These selective monohalogenations proceeded via alkylalkoxyzirconocene complexes.