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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Iranian Journal of Chemistry and Chemical Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Green chemistry,Solvent-free,Quinoline,Friedländer hetero-annulation,P2O5 /SiO2
- چکیده:
- چکیده انگلیسی: A highly efficient, simple and green solvent-free protocol for the preparation of poly-substituted quinolines via Friedländer hetero-annulation reaction between 2-aminoaryl ketones and carbonyl compounds in the presence of silica-supported P2O5 (P2O5 / SiO2) is described. In this method, the title compounds are obtained in high to excellent yields and in short reaction times.
- انتشار مقاله: 13-05-1388
- نویسندگان: Alireza Hasaninejad,Abdolkarim Zare,Mohammad Ali Zolfigol,Marzieh Abdeshah,Arash Ghaderi,Fatemeh Nami-Ana
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Chemistry and Chemical Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Microwave,Carboacyclic nucleoside,Aza-conjugate addition reaction,Pyrimidine nucleobase,,-unsaturated ester
- چکیده:
- چکیده انگلیسی: A new efficient method for the synthesis of carboacyclic nucleosides as biologically interesting compounds via aza-conjugate addition of pyrimidine nucleobases to a,β-unsaturated esters in the presence of catalytic amount of LiOH.H2O (1.2-4.8 mol%) under microwave irradiation is described. This method affords the title compounds in good to excellent yields and in short reaction times.
- انتشار مقاله: 08-10-1387
- نویسندگان: Mohammad Ali Zolfigol,Ardeshir Khazaei,Ahmad Reza Moosavi-Zare,Abdolkarim Zare,Ali Reza Hasanijejad
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Horticultural Science and Technology
- نوع مقاله: Journal Article
- کلمات کلیدی: Heterosis,German iris,hybridization,phenotypic variation,progeny
- چکیده:
- چکیده انگلیسی: To produce new, high-quality offsprings, we generated two cross combinations in Iris germanica. Three parental plants were selected after preliminary screening of commercial traits in different cultivars. Fourteen quantitative traits mostly related to the flower organ were investigated on 15 progenies and three parental plants in a randomized complete block design with three replications. Significant positive and negative correlations were observed among different studied attributes at 0.01 and 0.05 probability. The highest positive (+0.86) and negative (-0.76) correlations was recorded between diameter of flowering branch with crown diameter as well as peduncle length, respectively. Cluster analysis using Ward’s method separated most of the progenies from the parental plants based on evaluated morphological characteristics. However, some of the progenies were grouped with their maternal parent. In PCA analysis, five factors explained 87.84% of the total variations; crown diameters as well as diameter of flowering branch were predominant in the first component (34.19%). Some promising progenies with interesting characteristics were observed and several hybrid plants were superior to their parents and showed positive heterosis over their parents. Progenies NIOP5 and NIOP8 were superior in the most studied attributes, therefore, they suggested for further investigations which can be used in breeding programs. Progenies showed a wider range for flower diameter, peduncle thickness, bush height, as well as inner and outer tepal dimensions. Flower color also showed wider range in the progenies and purple, violet and white colors were the most frequent colors in the hybrid plants, while lilac color was the rarest one. Results of our investigation revealed that intervarietal hybridization is an effective way to contribute to the phenotypic variation in the iris flower for producing new plant materials for breeding purposes as well as releasing new cultivars. The inheritance of some of the traits identified in this study will be important for improving plant architecture in German iris plant.
- انتشار مقاله: 15-12-1396
- نویسندگان: Mohammad Hossein Azimi,Maryam Karimi Alvijeh,Abdolkarim Zarei
- مشاهده
- جایگاه : پژوهشی
- مجله: Chemical Methodologies
- نوع مقاله: Journal Article
- کلمات کلیدی: Thioacetamide,Multi-component reaction,N,N,N',N'-tetramethyl-N,N'-bis(sulfo)ethane-1,2-diaminium mesylate ([TMBSED][Oms]2),1-Thioamidoalkyl-2-naphthol,Dicationic ionic liquid,Dual-functional catalyst.
- چکیده:
- چکیده انگلیسی: N,N,N',N'-tetramethyl-N,N'-bis(sulfo)ethane-1,2-diaminium mesylate ([TMBSED][Oms]2) is used as a highly efficient and dual-functional catalyst for the one-pot multi-component condensation of 2-naphthol with arylaldehydes and thioacetamide under green, mild (70 °C), and solvent-free conditions. In this reaction, 1-thioamidoalkyl-2-naphthols are produced in high to excellent yields and in relatively short reaction times. In this reaction, products are identified by analysis of its 1H NMR, 13C NMR, and FT-IR data. Moreover, a plausible mechanism based on dual-functionality of the catalyst was proposed.
- انتشار مقاله: 22-03-1398
- نویسندگان: Navid Irannejad-Gheshlaghchaei,Abdolkarim Zare,Alireza Banaei,Hamideh Kaveh,Nahid Varavi
- مشاهده
- جایگاه : پژوهشی
- مجله: Chemical Methodologies
- نوع مقاله: Journal Article
- کلمات کلیدی: Solvent-free,4-Hydroxycoumarin,Bis-coumarin,Protic acidic ionic liquid,Triethylaminium-N-sulfonic acid tetrachloroaluminate (TSAT)
- چکیده:
- چکیده انگلیسی: In this work, a rapid and highly effectual protocol for the synthesis of bis-coumarins has been developed. The one-pot quasi three-component reaction of aromatic aldehydes (1 eq.) with 4-hydroxycoumarin (2 eq.) in the presence of catalytic amount of protic acidic ionic liquid triethylaminium-N-sulfonic acid tetrachloroaluminate (TSAT) under solvent-free conditions afforded the mentioned compounds in high yields and short reaction times.
- انتشار مقاله: 23-01-1398
- نویسندگان: Asieh Kargar-Dolatabadi,Abdolkarim Zare
- مشاهده
- جایگاه : پژوهشی
- مجله: Chemical Methodologies
- نوع مقاله: Journal Article
- کلمات کلیدی: Ionic Liquid,3,4-dihydropyrimidin-2-(1H)-one,3,4-dihydropyrimidin-2-(1H)-thione,Dual-functional catalyst N1,N1,N2,N2-Tetramethylethylenediaminium-N1,N2-disulfonic acid trifluoroacetate ([TMEDSA][TFA]2)
- چکیده:
- چکیده انگلیسی: In this research, the one-pot multi-component reaction of β-ketoesters with aryl aldehydes and urea/thiourea has been performed using a dual-functional ionic liquid-catalyst namely N1,N1,N2,N2-tetramethylethylenediaminium-N1,N2-disulfonic acid trifluoroacetate ([TMEDSA][TFA]2) in solvent-free conditions. By reason of dual-functionality of the catalyst (possessing acidic and basic sites), and also having two numbers of each site, it was highly effectual and general catalyst, and afforded the products {3,4-dihydropyrimidin-2-(1H)-ones and 3,4-dihydropyrimidin-2-(1H)-thiones} in short times with excellent yields. Moreover, a plausible mechanism based on dual-functionality of the catalyst has been proposed.
- انتشار مقاله: 28-08-1397
- نویسندگان: Mostafa Karami,Bentolhoda Gholami,Tahereh Hekmat-Zadeh,Abdolkarim Zare
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Pyrido[2,3-d:6,5-d′]dipyrimidine Ionic liquid N1,N1,N2,N2-tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium trifluoroacetate ([TMBSED][TFA]2) Multi-component reaction Solvent-free
- چکیده:
- چکیده انگلیسی: Ionic liquid N1,N1,N2,N2-tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium trifluoroacetate ([TMBSED][TFA]2) was utilized as an efficacious and dual-functional catalyst for the one-pot multi-component reaction of arylaldehydes, 2-thiobarbituric acid and ammonium acetate under the solvent-free conditions to afford pyrido[2,3-d:6,5-d′]dipyrimidine derivatives. Dual-functionality of [TMBSED][TFA]2 (having acidic and basic groups) caused that the products were obtained in high yields and short reaction times. Moreover, a logical mechanism based on dual-functionality of the catalyst was proposed.
- انتشار مقاله: 14-02-1398
- نویسندگان: Jaleh Atashrooz,Abdolkarim Zare
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: N,N',N'-Tetramethylethylene-diaminium-N,N'-disulfonic acid chloride {[TMEDSA][Cl]2} Sulfonic acid-functionalized ionic liquid 4H-Pyrano[2,3-c]pyrazole α-Carbamatoalkyl-β-naphthol α-Amidoalkyl-β-naphthol
- چکیده:
- چکیده انگلیسی: In this work, N,N,N',N'-tetramethylethylene-diaminium-N,N'-disulfonic acid chloride {[TMEDSA][Cl]2} has been utilized as a highly effective catalyst in order to promote the following organic transformations under green, solvent-free and mild conditions: (i) the synthesis of 4H-pyrano[2, 3-c]pyrazoles from aromatic aldehydes, 3-methyl-1-phenyl-2-pyrazolin-5-one and malononitrile, (ii) the preparation of α-carbamatoalkyl-β-naphthols from arylaldehydes, β-naphthol and alkyl carbamates, and (iii) the production of α-amidoalkyl-β-naphthols from arylaldehydes, β-naphthol and amides.
- انتشار مقاله: 01-11-1397
- نویسندگان: Sharareh Ravanshad,Hakimeh Asvar,Fatemeh Fouladi,Arezoo Pourkazemi,Maasoomeh Shamsizadeh,Maryam Khalili,Maria Merajoddin,Abdolkarim Zare
- مشاهده