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首页> 外文期刊>Organometallics >Thermolysis of iron N-allylaminocarbene complexes: Formation of eta(3)-1-azaallylirontricarbonyl complexes. Synthetic and theoretical study
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Thermolysis of iron N-allylaminocarbene complexes: Formation of eta(3)-1-azaallylirontricarbonyl complexes. Synthetic and theoretical study

机译:铁N-烯丙基氨基卡宾配合物的热解:eta(3)-1-氮杂烯丙基三羰基配合物的形成。综合理论研究

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摘要

Both chelated and nonchelated N-allyl-N-methylaminocarbene complexes of iron unsubstituted at the 1- and 3-positions of an allyl substituent afforded by thermolysis new eta(3)-iron tricarbonyl complexes of 2,3-dihydropyrrole. The proposed mechanism of these reactions involves bicyclo[2.1.1]-2-aza-5-ferrahexane as an intermediate formed by [2+2] cycloaddition. Formation of this intermediate requires antiparallel arrangement of Fe=C and C=C double bonds in the cycloaddition step. This mechanism was supported by reaction of deuterium-labeled complexes and by the density functional calculations of B3LYP quality. The structure of tricarbonyl[(eta(3)-N-methyl-2-(biphenyl-4-yl)-4,5-dihydropyrroleliron(0) (4f) has been determined by X-ray diffraction. [References: 23]
机译:通过热解2,3-二氢吡咯的新eta(3)-三羰基铁三羰基铁配合物而得到的未取代的烯丙基取代基的1-位和3-位的铁的螯合和非螯合的N-烯丙基-N-甲基氨基碳烯络合物。这些反应的拟议机制涉及双环[2.1.1] -2-氮杂-5-ferra己烷作为由[2 + 2]环加成反应形成的中间体。该中间体的形成需要在环加成步骤中Fe = C和C = C双键的反平行排列。氘标记的复合物的反应和B3LYP质量的密度泛函计算支持了这一机理。三羰基[(η(3)-N-甲基-2-(联苯-4-基)-4,5-二氢吡咯铁(0)(4f)]的结构已通过X射线衍射测定[参考文献:23]。

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