Biomimetic Oxidative Bromination by
<i>cis</i>
‐Dioxidotungsten(VI) Complexes of Salan Type N,N’‐Capped Linear Tetradentate Amino Bisphenol
作者:Mannar R. Maurya、Shailendra K. Maurya、Naveen Kumar、Puneet Gupta
DOI:10.1002/ejic.202100357
日期:2021.7.22
Reaction of [WVIO2(acac)2] (Hacac=acetylacetone) with salan-type dibasic tetradentate ONNO donor Mannich bases derived from ethylenediamine, formaldehyde and 2,4-di-tert-butylphenol (H2L1), 2-tert-butyl-4-methylphenol (H2L2), 2,4-dimethylphenol (H2L3) and 2,4-dichlorophenol (H2L4) in a 1 : 1 ([WVIO2(acac)2] : H2L) molar ratio in refluxing MeOH gave the corresponding cis-dioxidotungsten(VI) complexes
[W VI O 2 (acac) 2 ](Hacac = 乙酰丙酮)与源自乙二胺、甲醛和 2,4-二叔丁基苯酚(H 2 L 1 ) 的萨兰型二元四齿 ONNO 供体曼尼希碱的反应,2 -叔丁基-4-甲基苯酚 (H 2 L 2 )、2,4-二甲基苯酚 (H 2 L 3 ) 和 2,4-二氯苯酚 (H 2 L 4 ) 以 1 : 1 ([W VI O 2 ( acac) 2 ] : H 2 L) 摩尔比在回流的 MeOH 中得到相应的顺式-二氧化钨(VI)配合物[W VI O 2 L 1 ] ( 1 ), [W VI O 2 L 2 ] ( 2 ), [W VI O 2 L 3 ] ( 3 )和[W VI O 2 L 4 ] ( 4 ) 分别。元素分析表征、各种光谱(FT-IR、UV-vis、1 H 和13 C NMR)研究、DFT 计算和2和3的单晶 X 射线分析表明六配位八面体 α-顺式配