Transmetallation of a zinc methylene complex [ZnI(tmeda)]₂(μ-CH₂) with a titanium(III) chloride [TiCl₃(tmeda)(thf)] produced a titanium methylene complex. The X-ray diffraction study displayed a dinuclear methylene structure [TiCl(tmeda)]₂(μ-CH₂)(μ-Cl)₂. Treatment of an ester with the titanium methylene complex resulted in methylenation of the ester carbonyl to form a vinyl ether. The titanium methylene complex also reacted with a terminal olefin, resulting in olefin-metathesis and olefin-homologation. Cyclopropanation by methylene transfer from the titanium methylene proceeded by use of a 1,3-diene. The mechanistic study of the cyclopropanation reaction by the density functional theory calculations was also reported.

中文翻译：

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酯亚甲基化试剂的结构解析：双核钛（III）亚甲基配合物的合成和反应性

锌亚甲基络合物的金属转移[ZnI乙二胺（TMEDA）] ₂（μ-CH ₂）与钛（III），氯化[的TiCl ₃（TMEDA）（THF）〕制备的钛络合物的亚甲基。的X射线衍射研究显示双核亚甲基结构[的TiCl（TMEDA）] ₂（μ-CH ₂）（μ-Cl）的₂。用亚甲基钛配合物处理酯导致酯羰基甲基化以形成乙烯基醚。亚甲基钛配合物也与末端烯烃反应，导致烯烃复分解和烯烃同质化。通过使用1，3-二烯从亚甲基钛进行亚甲基转移而进行环丙烷化。还报道了通过密度泛函理论计算对环丙烷化反应的机理。