Reductive Coupling Reaction of Aryliminomethylferrocenes with Triethyl Orthoformate Induced by Low-valent Titanium

• 来源期刊: 中国化学(英文版)
• 学科: 化学
• 年，卷（期）: 2001,（9）
• 页码范围: 893-900
• 页数: 8页
• 分类号: O6
• 语种: 英文

摘要

Reductive coupling reaction of aryliminomethylferrocenes FcCH=NAr [(1, Ar=C6H5 (a), p-ClC6H4 (b), p-BrC6-H4 (c), p-CH3C6H4 (d), m-ClC6H4 (e)] with triethyl orthoformate (2) in Zn-TiCl4 system gave three kinds of products: 1,3-diaryl-4,5-diferrocenyl imidazolidines (3), N,Ndisubstituted fomamides (4), amd 1,2-diferrneenyl ethylene (5). 1H NMR spectra proved that all the compounds 3 obtained were al-isomers. All the new compounds 3 and 4 were characterized by elemental analysis, 1H NMR, 13C NMR (for 3) and IR spectra. The molecular structure of 3c was determined by X-ray diffraction.