N-Donor ligand activation of titanocene for the Biginelli reaction via the imine mechanism

Shaohua Zheng; Yajun Jian; Shan Xu; Ya Wu; Huaming Sun; Guofang Zhang; Weiqiang Zhang; Ziwei Gao

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N-Donor ligand activation of titanocene for the Biginelli reaction via the imine mechanism

机译：通过亚胺机理的Biginelli反应的钛茂的N-供体配体活化

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The remarkable activation of stable titanocene dichloride (Cp _(2) TiCl _(2) ) was achieved using N-donor ligand urea in an alcoholic solvent, leading to the formation of a Ti( IV ) species [(MeO) _(2) Ti(NHCONH _(2) )] ~(+) , the existence of which was verified by ESI-MS, ESI-MS/MS, and NMR. Catalyzed by the newly formed Ti( IV ) species, a myriad of 3,4-dihydropyrimidin-2-(1 H )-ones were produced via a three-component Biginelli reaction. Further mechanistic investigation indicated that the Biginelli reaction had taken place via the imine route.

机译：使用N-给体配体尿素在酒精溶剂中实现了稳定的二茂钛二氯化物（Cp _（2）TiCl _（2）的显着活化，导致形成了Ti（IV）物种[（MeO）_（2 ）Ti（NHCONH _（2））]〜（+）的存在已通过ESI-MS，ESI-MS / MS和NMR验证。通过新形成的Ti（IV）物种的催化，通过三组分Biginelli反应生成了无数的3,4-二氢嘧啶-2-（1 H）-。进一步的机理研究表明，Biginelli反应是通过亚胺途径发生的。

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《RSC Advances》 |2018年第16期|共5页
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Shaohua Zheng; Yajun Jian; Shan Xu; Ya Wu; Huaming Sun; Guofang Zhang; Weiqiang Zhang; Ziwei Gao;
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1. N-Donor ligand activation of titanocene for the Biginelli reaction via the imine mechanism [J] . Zheng Shaohua, Jian Yajun, Xu Shan, RSC Advances . 2018,第16期

机译：N-供体配体通过亚胺机构进行二聚烯烃的钛烯激活
2. CO and O_2 Binding to Pseudo-tetradentate Ligand-Copper(Ⅰ) Complexes with a Variable N-Donor Moiety: Kinetic/Thermodynamic Investigation Reveals Ligand-lnduced Changes in Reaction Mechanism [J] . Heather R. Lucas, Gerald J. Meyer, Kenneth D. Karlin Journal of the American Chemical Society . 2010,第37期

机译：CO和O_2与具有可变N-给体基团的拟四齿配体-铜（Ⅰ）配合物的结合：动力学/热力学研究揭示了配体诱导的反应机理变化
3. CO and O2 Binding to Pseudo-tetradentate Ligand−Copper(I) Complexes with a Variable N-Donor Moiety: Kinetic/Thermodynamic Investigation Reveals Ligand-Induced Changes in Reaction Mechanism [J] . Heather R. Lucas Gerald J. Meyer and Kenneth D. Karlin Journal of the American Chemical Society . 2010,第37期

机译：CO和O2结合到具有可变N-给体部分的伪四齿配体-铜（I）配合物：动力学/热力学研究揭示了配体诱导的反应机理变化。
4. Imines derived from enantiopure trans-3-amino-azetidin-2-ones as dienophiles in aza-Diels-Alder reactions with activated and nonactivated dienes(Abstracts) [C] . Tanja Poljak, Kresimir Molcanov, Davor Margetic European Symposium on Organic Chemistry . 2007

机译：酰胺衍生自EnAliopure Trans-3-氨基 - azetidin-2-α-二氧化铝 - 桤木反应中的Diuenophiles，其与活化和非活化的二烯（摘要）
5. Thermodynamic and kinetic investigation of reactions of low-valent group 6 complexes with N-donor ligands [D] . Fortman, George C. 2009

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6. CO and O2 Binding to Pseudo-Tetradentate Ligand-Copper(I)-Complexes with a Variable N-Donor Moiety: Kinetic/Thermodynamic Investigation Reveals Ligand Induced Changes in Reaction Mechanism [O] . Heather R. Lucas, Gerald J. Meyer, Kenneth D. Karlin -1

机译：CO和O 2绑定到伪四齿配体 - 铜（I）-Complexes具有可变的N-供体部分：动力学/热力学研究揭示了反应机理配体诱导的变化
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N-Donor ligand activation of titanocene for the Biginelli reaction via the imine mechanism

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