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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Quarterly Journal of Applied Chemical Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Oxidation,Alcohols,Nanomagnetic catalyst,Nickel ferrite,Oxone
- چکیده:
- چکیده انگلیسی: Nanomagnetic NiFe2O4 was used as the efficient, stable, reusable catalyst for selective oxidation of alcohols to their corresponding carbonyl compounds using oxone (potassium hydrogen monopersulfate) as oxidant in the presence of water as solvent at room temperature. The oxidation of various primary and secondary alcohols has been examined and related corresponding products were obtained with good yields. The catalyst was investigated with XRD, SEM, ICP and IR techniques. Furthermore, the catalyst could be easily recovered and reused for several times without loss of activity.
- انتشار مقاله: 19-08-1394
- نویسندگان: Ali Ramazani,Fariba Sadri,Abdolhossain Massoudi,Mehdi Khoobi,Sang Woo Joo,Leila Dolatyari,Vahid Azizkhani
- مشاهده
- جایگاه : پژوهشی
- مجله: Chemical Methodologies
- نوع مقاله: Journal Article
- کلمات کلیدی: 2-Amino-4H-chromenes,Solvent-free,MOF-5,Metal organic framwork
- چکیده:
- چکیده انگلیسی: MOF-5 has been employed as a powerful catalyst for the preparation of 2-amino-4H-chromene. A wide variety of aromatic aldehydes was condensed with malononitrile and 2-naphthol under mild and solvent-free conditions in the presence of the trace amount of catalyst. A variety of 2-amino-4H-chromene can be obtained in good to excellent yield up to 95% in relatively short time reaction and easy workup.
- انتشار مقاله: 26-06-1397
- نویسندگان: Zeinab Arzehgar,Vahid Azizkhani,Sami Sajjadifar,Mohammad Hossein Fekri
- مشاهده
- جایگاه : پژوهشی
- مجله: Chemical Methodologies
- نوع مقاله: Journal Article
- کلمات کلیدی: Quinoxaline,Boron Sulfonic Acid,Trimethyl borate,Triisopropyl borate,SBSA,STMB,STIPB
- چکیده:
- چکیده انگلیسی: A simple, highly efficient and green procedure for the condensation of aryl and alkyl 1,2-diamines with α-diketones in the presence of catalytic amount of boron sulfonic acid (BSA) and silica trimethyl borat (STMB) and silica triisopropyl borate (STIPB), as two novel heterogeneous Lewis acid catalysts at room temperature, is described. In this method, we proved that the BrØnsted acidic power of boron sulfonic acid (BSA) is more important than its Lewis acidity. Using this method, quinoxaline derivatives as biologically interesting compounds are produced in high to excellent yields.
- انتشار مقاله: 17-06-1397
- نویسندگان: Sami Sajjadifar,Vahid Azizkhania,Kaushik Pal,Hadi Jabbari,Omidali Pouralimardan,Faten Divsar,Sarvin Mohammadi-Aghdam,Issa Amini,Hoda Hamidi
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Ag supported,β-azido alcohols,Ring Opening,Regioselective,Lewis acid
- چکیده:
- چکیده انگلیسی: In this study, we synthesized Ag supported on hydroxyapatite-core-shell-γ-Fe2O3 nanoparticles (γ-Fe2O3@HAp-Ag NPs) as a new, lewis acid, and reusable heterogeneous nancatalyst. Then, it was successfully used for the synthesis of β-azido alcohols and β-thiocyanohydrins from the regioselective conversation of some epoxides by azide and thiocyanate anions in water. The reaction afforded the corresponding products with high regioselectivity under mild reaction conditions.
- انتشار مقاله: 18-09-1397
- نویسندگان: Issa Amini,Vahid Azizkhani,Elham Ezzatzadeh,Kaushik Pal,Sobhan Rezayati,Mohammad Hossein Fekri,Parisa Shirkhani
- مشاهده