Zirconacyclopropanes and Zirconacyclopropenes. Their Synthesis, Characterization, and Reactions
Zirconacyclopropanes and Zirconacyclopropenes. Their Synthesis, Characterization, and Reactions
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DOI：
10.1246/cl.1987.623
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发表时间：
1987-04
影响因子：
1.6
通讯作者：
Tamotsu Takahashi;D. Swanson;E. Negishi
中科院分区：
文献类型：
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作者：
Tamotsu Takahashi;D. Swanson;E. Negishi
由Cp_2Zr（PhCCPh）（PR_3）（4）表示的锆环丙烯，其中PR_3是PMe_3或PMePh_2，已通过Cp_2Zr（PR_3）_2与PhC·PhCPh反应制备，分离为淡黄色晶体，并进行光谱表征。锆杂环丙烯容易与质子供体、羰基化合物，例如，丙酮和炔来诱导炔的二聚化，并且可能是ZrCp2诱导的烯炔双环化中的中间体。
Zirconacyclopropenes represented by Cp2Zr(PhCCPh) (PR3) (4), where PR3 is PMe3 or PMePh2, have been prepared by the reaction of Cp2Zr(PR3)2 with PhC≡CPh, isolated as yellowish crystals, and spectroscopically characterized. Zirconacyclopropenes readily react with proton donors, carbonyl compounds, e.g., acetone, and alkynes to induce dimerization of alkynes and are likely intermediates in the ZrCp2-induced bicyclization of enynes.