Mosadegh Keshavarz
Department of Gas and Petroleum, Yasouj University, Yasouj, Zip Code 75918-74831, Iran
[ 1 ] - Melamine trisulfonic acid: An efficient and recyclable solid acid catalyst for the green synthesis of Biscoumarin derivatives
A novel catalytic synthesis of 3,3'-(arylmethylene)-bis-(4-hydroxy-2H-chromene-2-one) derivatives from a tandem condensation reaction of 4-hydroxycoumarin and aromatic aldehydes has been developed. The reaction occurs in water in the presence of Melamine trisulfonic acid as catalyst to give the corresponding products in good to high yields. This green approach has several advantages such as sho...
[ 2 ] - One-pot multicomponent click synthesis of some novel 1,4-disubstituted-1H-1,2,3-triazoles from alkenes
A facile and one-pot multicomponent synthesis of novel 1,4-disubstituted-1H-1,2,3-triazoles from alkenes at room temperature is reported. At the first step, in the presence of I2/NaN3 reagents, various alkenes were converted to the corresponding azido iodides and in the next step, the reaction of these compounds with phenylacetylene in the presence of catalytic amount of sodium ascorbate/ CuSO4...
[ 3 ] - Melamine trisulfonic acid: An efficient and recyclable solid acid catalyst for the green synthesis of Biscoumarin derivatives
A novel catalytic synthesis of 3,3'-(arylmethylene)-bis-(4-hydroxy-2H-chromene-2-one) derivatives from a tandem condensation reaction of 4-hydroxycoumarin and aromatic aldehydes has been developed. The reaction occurs in water in the presence of Melamine trisulfonic acid as catalyst to give the corresponding products in good to high yields. This green approach has several advantages such as sho...
[ 4 ] - سنتز سه جزئی، سبز و تک ظرف مشتقات بنزو[b]پیران و پیرانو[c]کرومن با استفاده از نانوذرات فسفو تنگستیک اسید کپسوله شده در نانوسلیکای عامل دار شده با پلیمر دندریتیک (Dendrimer-PWAn) تحت تابش فراصوت در محیط آب
یک روش موثر و دوست دار محیط‌زیست برای سنتز مشتقات مختلف تتراهیدروبنزو [b] پیران و 3،4-دی هیدروپیرانو [c] کرومن در حضور نانوذرات Dendrimer-PWAn به‌عنوان کاتالیزور در دمای اطاق توسط واکنش سه جزئی آلدهید، مالونونیتریل و دیمدون یا 4-هیدروکسی کومارین تحت تابش امواج فراصوت در محیط آب توسعه داده شد. برای ساخت این کاتالیزور نانوذرات H3PW12O40 (PWAn) تهیه‌شده به روش حلالی-حرارتی روی نانوسیلیکای عامل دار...
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