The Selective Reduction Of The Allyl Halide And The Activation Of Nitrogen By DyI2 Are Carried Out By The Reaction Of FeCl ₃ 6H ₂

This thesis consists of two parts:FeCl3·6H2O-catalyzed selective allylic direct reduction of allylic halides and activation and functionalization of dinitrogen by DyI2.Part 1:Iron-catalyzed direct reduction of allylic chloride with benzyl alcohol has been established, providing a new simple and efficient method for highly regioselective hydrodehalogenation at allylic positions of organic halides. This method not only features the easily available reductant, inexpensive catalyst, simple manipulation, good tolerance of functional groups, and mild conditions but also shows complete selectivity in that only halides sited on the allylic position are reduced in the presence of others. The new reaction conditions also allow the efficient reduction of substrates bearing groups. A number of functional groups are tolerated, including nitriles, nitro, esters, methoxyl, and halide groups.Part 2:Dinitrogen is the source of all of the nitrogen necessary to sustain life on this planet. It is hard to activate because of the intrinsic inertness. Biological nitrogen fixation by the nitrogenase enzymes has long been a touchstone for dinitrogen chemistry. Haber-Bosch process are ubiquitous in industrial nitrogen fixation converting N2 and H2 to NH3. Recent advantages show that metal complexes are potential to activate dinitrogen. In this part, we investigated activation of dinitrigen by DyI2 and made a computational result about the active intermediate. It is highlighted that the strong reductive DyI2 can reduce dinitrogen into N24", comparing the N22- or N23" known in the past dinitrogen activation by lanthanide complexes. We converted dinitrogen to hydrazine and some organic nitrides. Functionalization of dinitrogen metal complexes is a far more interesting task for dinitrogen activation. Organic compounds can be introduced to the activated dinitrogen metal complexes to synthesize vary organic nitrides. We tested isocyanates in this part and found it was possible to straight functionalize the activated dinitrogen. The fully activated dinitrogen in our system was easy to handle contributing to the strong reductive DyI2.