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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >The addition of Grignard reagents to carbodiimides. The synthesis, structure and potential utilization of magnesium amidinates
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The addition of Grignard reagents to carbodiimides. The synthesis, structure and potential utilization of magnesium amidinates

机译：向碳二酰亚胺加入Grignard试剂。 镁脒的合成，结构和潜在利用

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摘要

Direct synthesis of magnesium amidinates of the general formula [RNC(R-1)NR]MgR2 has been performed from appropriate carbodimide and Grignard reagents (R = Pr-i, Cy, (p)Tol; R-1 = Me, Bu-n; R-2 = Bu-n, Cl, I). Magnesium bisamidinates of the composition [RNC(R-1)NR](2)Mg(solvent)(2) are accessible from [RNC(R-1)NR]MgR2 and via the Schlenk-like equilibrium in coordinating solvents. The only isolated amidinatomagnesium halide, preserved in the dinuclear form of {[(p)TolNC(Me)N-(p)Tol]Mg(THF)}(2)--(THF)--(Cl)(2), has been obtained from the reaction of (p)Tol-N?C?N-(p)Tol with MeMgCl(THF)(n) in hexane. The reaction of (p)Tol-N?C?N-(p)Tol with two equivalents of MeMgI gives an unprecedented dinuclear cyclic adduct {-[(p)TolNC(Me)N-(p)Tol][MgI(OEt2)](2)--Me}. The structures of these complexes have been investigated by NMR spectroscopy, sc-XRD and theoretical methods. Selected complexes have been tested as initiators of ring-opening polymerization reactions with various substrates, the copolymerization of oxiranes and CO2 as well as the esterification of lactides.
机译：一般式[RNC（R-1）NR] MGR2的直接合成百分之氨酸镁，已从合适的碳二亚胺和GRIGNARD试剂中进行（R = PR-I，CY，（P）TOL; R-1 = ME，BU- n; r-2 = bu-n，cl，i）。组合物[RNC（R-1）NR]（2）Mg（溶剂）（2）的镁白氨酸酯可从[RNC（R-1）NR] MGR2和通过协调溶剂中的Schlenk样平衡来达到。唯一的酰胺酰胺镁卤化物，以二核形式保存的{[（p） - 丙烯（ME）n-（p）β] Mg（THF）}（2） - （THF） - （CL）（2），已经从己烷中的Memgcl（THF）（N）中的（P）Tol-N 2 C 2 -N-（P）Tol的反应获得。 （p）甲β的反应（p）Δc？n-（p）β具有两当量的memgi给出前所未有的二核环状加合物（ - [（p）tolnc（me）n-（p）tol] [mgi（oet2 ）]（2） - 我}。通过NMR光谱，SC-XRD和理论方法研究了这些配合物的结构。已选择复合物作为具有各种底物的开环聚合反应的引发剂，香草和CO 2的共聚以及丙交酯的酯化。

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    Chlupaty Tomas; Bilek Michal; Merna Jan; Brus Jiri; Ruzickova Zdenka; Strassner Thomas; Ruzicka Ales;

  • 作者单位

    Univ Pardubice Dept Gen &

    Inorgan Chem Fac Chem Technol Studentska 573 CZ-53210 Pardubice Czech Republic;

    Univ Pardubice Dept Gen &

    Inorgan Chem Fac Chem Technol Studentska 573 CZ-53210 Pardubice Czech Republic;

    Inst Chem Technol Fac Chem Technol Dept Polymers Tech 5 CZ-16628 Prague 6 Czech Republic;

    Czech Acad Sci Inst Macromol Chem Heyrovsky Sqr 2 Prague 16206 6 Czech Republic;

    Univ Pardubice Dept Gen &

    Inorgan Chem Fac Chem Technol Studentska 573 CZ-53210 Pardubice Czech Republic;

    Tech Univ Dresden Phys Organ Chem Fac Chem &

    Food Chem Bergstr 66 D-01062 Dresden Germany;

    Univ Pardubice Dept Gen &

    Inorgan Chem Fac Chem Technol Studentska 573 CZ-53210 Pardubice Czech Republic;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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