Synthesis, Isolation and Structural Characterisation of Alkoxytitanium Triflate Complexes
作者:Matthew G. Davidson、Andrew L. Johnson
DOI:10.1002/ejic.201100830
日期:2011.11
Treatment of [Ti(OiPr)4] with trimethylsilyl triflate results in the formation of [Ti(OiPr)3(OTf)] (2) in high yield. Subsequent treatment of the triflate derivative 2 with a series of facially coordinating N3-donor ligands results in the production of a series of charge-separated metal alkoxide salts of the general formula [L}Ti(OiPr) 3][OTf] L = tris(pyrazolyl)methane (3a), 1,3,5-triethyl-1,3,5-
用三甲基甲硅烷基三氟甲磺酸酯处理 [Ti(OiPr)4] 导致 [Ti(OiPr)3(OTf)] (2) 的高产率形成。随后用一系列面配位的 N3 供体配体对三氟甲磺酸酯衍生物 2 进行处理,产生一系列通式 [L}Ti(OiPr) 3][OTf] L = 三(吡唑基)甲烷 (3a), 1,3,5-三乙基-1,3,5-三氮杂环己烷 (3b), 1,3,5-三苄基-1,3,5-三氮杂环己烷 (3c), 1, 3,5-三(对氟苄基)-1,3,5-三氮杂环己烷 (3d) 和 1,3,5-三[(1S)-1-苯乙基]-1,3,5-三氮杂环己烷 (3e) }. 产物通过 1H 和 13C NMR 光谱表征,在 3a-c 的情况下通过单晶 X 射线衍射表征。2 与 1,3,5-三苯基-1,3,5-三氮杂环己烷反应生成配合物 4 [L'}2Ti(OiPr)2(OTf)2],