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首页> 外文期刊>RSC Advances >Transfer hydrogenation of aldehydes catalyzed by silyl hydrido iron complexes bearing a [PSiP] pincer ligand
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Transfer hydrogenation of aldehydes catalyzed by silyl hydrido iron complexes bearing a [PSiP] pincer ligand

机译：用含有[psip]钳子配体的甲硅烷基氢化机铁复合物催化的醛氢化氢化

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摘要

The synthesis and characterization of a series of silyl hydrido iron complexes bearing a pincer-type [PSiP] ligand (2-R2PC6H4)(2)SiH2 (R = Ph (1) and Pr-i (5)) or (2-Ph2PC6H4)(2)SiMeH (2) were reported. Preligand 1 reacted with Fe(PMe3)(4) to afford complex ((2-Ph2PC6H4)SiH)Fe(H)(PMe3)(2) (3) in toluene, which was structurally characterized by X-ray diffraction. ((2-(Pr2PC6H4)-Pr-i)SiH)Fe(H)(PMe3) (6) could be obtained from the reaction of preligand 5 with Fe(PMe3)(4) in toluene. Furthermore, complex ((2-(Pr2PC6H4)-Pr-i)Si(OMe))Fe(H)(PMe3) (7) was isolated by the reaction of complex 6 with 2 equiv. MeOH in THF. The molecular structure of complex 7 was also determined by single-crystal X-ray analysis. Complexes 3, 4, 6 and 7 showed good to excellent catalytic activity for transfer hydrogenation of aldehydes under mild conditions, using 2-propanol as both solvent and hydrogen donor. ,-Unsaturated aldehydes could be selectively reduced to corresponding ,-unsaturated alcohols. The catalytic activity of penta-coordinate complex 6 or 7 is stronger than that of hexa-coordinate complex 3 or 4.
机译：含有钳型[PSIP]配体（2-R2PC6H4）（2）SiH2（R = pH（1）和Pr-1（5））或（2-PH2PC6H4的含有夹钳氢化物铁复合物的一系列甲硅烷基水合铁复合物的合成及表征报道了（2）Simeh（2）。预前1与Fe（PME 3）（4）反应，得到甲苯的复合物（（2-PH2PC6H4）SIH）Fe（H）（PME 3）（2）（3），其在结构上以X射线衍射为特征。 （（2-（PR2PC6H4）-PR-I）SIH）Fe（H）（PME 3）（6）可以从预制配合5与甲苯中的Fe（PME 3）（4）的反应获得。此外，通过2当量的复合物6的反应分离复合物（（2-（PR2PC6H4）-PR-I）Si（OME））Fe（H）（PME 3）（7）。 Meoh在THF。复合物7的分子结构也通过单晶X射线分析确定。复合物3,4,6和7显示出优异的催化活性，用于在温和条件下使用2-丙醇作为溶剂和氢气供体在温和条件下转移醛的催化活性。 ， - 不饱和醛可以选择性地减少到相应的 - 不饱和醇。 Penta坐标络合物6或7的催化活性比六曲坐标复合物3或4的催化活性强。

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  • 来源
    《RSC Advances》 |2018年第25期|共8页
  • 作者

    Zhang Peng; Li Xiaoyan; Qi Xinghao; Sun Hongjian; Fuhr Olaf; Fenske Dieter;

  • 作者单位

    Shandong Univ Sch Chem &

    Chem Engn Key Lab Special Funct Aggregated Mat Minist Educ Shanda Nanlu 27 Jinan 250100 Shandong Peoples R China;

    Shandong Univ Sch Chem &

    Chem Engn Key Lab Special Funct Aggregated Mat Minist Educ Shanda Nanlu 27 Jinan 250100 Shandong Peoples R China;

    Shandong Univ Sch Chem &

    Chem Engn Key Lab Special Funct Aggregated Mat Minist Educ Shanda Nanlu 27 Jinan 250100 Shandong Peoples R China;

    Shandong Univ Sch Chem &

    Chem Engn Key Lab Special Funct Aggregated Mat Minist Educ Shanda Nanlu 27 Jinan 250100 Shandong Peoples R China;

    KIT Inst Nanotechnol INT Hermann von Helmholtz Pl 1 D-76344 Eggenstein Leopoldshafen Germany;

    KIT Inst Nanotechnol INT Hermann von Helmholtz Pl 1 D-76344 Eggenstein Leopoldshafen Germany;

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