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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Journal of Medicinal and Chemical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Quinoxaline,One-pot reaction,Solid acid catalyst,Silica supported 1-(2-(sulfooxy)ethyl)pyridin-1-ium chloride,SiO2/[SEP]Cl
- چکیده:
- چکیده انگلیسی: Silica supported 1-(2-(sulfooxy)ethyl)pyridin-1-ium chloride has been explored as highly efficient catalyst for reactions under mild and green conditions for the synthesis of quinoxaline derivatives. The green and mild methods offer appealing attributes such as use of a recyclable, use of EtOH as green solvent and 60 °C condition, short reaction times, a simple workup and high yield of the products.
- انتشار مقاله: 10-07-1399
- نویسندگان: Sami Sajjadifar,Ghobad Mansouri,Issa Amini,Maryam Yari
- مشاهده
- جایگاه : پژوهشی
- مجله: Chemical Methodologies
- نوع مقاله: Journal Article
- کلمات کلیدی: Thiocyanation,Nanomagnetic catalyst,Mild oxidant,Aromatic and heteroaromatic compounds
- چکیده:
- چکیده انگلیسی: In this research study, acidic ionic liquid based silica-coated Fe3O4 nanoparticles [Fe3O4@SiO2@(CH2)3-Py]HSO4as an efficient and reusable magnetic nanocatalyst was synthesized and characterized using the FT-IR, TEM, VSM, XRD, and TGA analysis. The catalytic performance of the [Fe3O4@SiO2@(CH2)3-Py]HSO4was evaluated towards the regioselective thiocyanation of aromatic and heteroaromatic compounds with KSCN as a thiocyanate source afforded the corresponding aryl and heteroaryl thiocyanates derivatives 2a-n at room temperature in H2O2 as a clean oxidant and ethanol as a green solvent. A broad range of products 2a-n was synthesized high yields (up to yield 97%) under the mild reaction conditions.
- انتشار مقاله: 14-02-1399
- نویسندگان: Sami Sajjadifar,Issa Amini,Sepideh Habibzadeh,Ghobad Mansouri,Esfandeyar Ebadi
- مشاهده
- جایگاه : پژوهشی
- مجله: Chemical Methodologies
- نوع مقاله: Journal Article
- کلمات کلیدی: Green chemistry,Boron sulfonic acid (BSA),quinoxaline synthesis,1,2-Diamine,α-diketone
- 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 silica boron sulfonic acid (SBSA) at room temperature is described. By Using this method, quinoxaline derivatives as biologically interesting compounds are produced in high to excellent yields and short reaction times.
- انتشار مقاله: 20-03-1396
- نویسندگان: Sami Sajjadifar,Issa Amini,Tayebeh Amoozadeh
- 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