كيميا برادران

In the conducted research, nanochitosans modified with acidic groups were designed, prepared an‎d eva‎luated as a heterogeneous catalyst that is according to green chemistry an‎d also recyclable, to perform the Strecker reaction. Chitosan as a polymer substrate was modified in the first step with trimellitic acid group an‎d in the next step, by loading copper metal (Cu (II)), the necessary active areas were created for better catalyst performance.Then, the performance of the catalyst prepared in the Strecker reaction was used to prepare α-aminonitrile derivatives, using various aromatic aldehydes an‎d in the presence of aromatic amines an‎d trimethylsilylcyanide (TMSCN), in green conditions without solvents an‎d at ambient temperature. The results obtained from the reactions showed that these reactions are performed in very short times an‎d with high efficiency. Also, the product purification process can be done in a simple way. In addition, this catalyst was used in several cycles, an‎d investigations showed that the recoverable catalyst can be reused with little yield loss. The results of the series of tests performed (FT-IR, SEM/EDX, TGA, BET) show the successful modification of the chitosan substrate, the uniform distribution of elements, especially copper, an‎d the stability of the catalyst structure. Based on this, the designed nanocatalyst called chitosan modified with trimitic anhydride an‎d copper (CS-TMA-Cu) can be an efficient option in line with the principles of green chemistry to perform the Strecker reaction an‎d quickly access α-aminonitrile derivatives.

شيمي سبز , واكنش استركر , كاتاليست ناهمگن , نانوكيتوسان اصلاح شده , تري‌مليتيك اسيد

Green Chemistry , Strecker reaction , Nanochitosan, modofied with TrimelliticAnhydride (TMA) , Heterogeneous catalyst

Kimia Baradaran

Dr Mohammad Ghorban Dekamin