Poly (vinylpyrrolidone)-Grafted Silica as a Polymeric Cosolvent Catalyst for Organic Transformations in Organic and Aqueous Media
Poly (vinylpyrrolidone)-grafted silica as an organic-inorganic hybrid material was used as an effective heterogeneous polymeric cosolvent catalyst in organic reactions. This modified silica catalyzed nucleophilic displacement of alkyl halides for easy preparation of alkyl thiocyanates, alkyl cyanide...
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| Format: | Article |
| Language: | English |
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University of Tehran
2015-09-01
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| Series: | Journal of Sciences, Islamic Republic of Iran |
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| Online Access: | https://jsciences.ut.ac.ir/article_55310_115583b73a7ed3b54b99894b05ecf63e.pdf |
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| author | S. Ghasemi B. Tamami R. Teymoori H. Allahyari |
| author_facet | S. Ghasemi B. Tamami R. Teymoori H. Allahyari |
| author_sort | S. Ghasemi |
| collection | DOAJ |
| description | Poly (vinylpyrrolidone)-grafted silica as an organic-inorganic hybrid material was used as an effective heterogeneous polymeric cosolvent catalyst in organic reactions. This modified silica catalyzed nucleophilic displacement of alkyl halides for easy preparation of alkyl thiocyanates, alkyl cyanides, alkyl azides and alkyl aryl ethers. Furthermore, the catalyst was applied for the conversion of epoxides to thiranes, thiocyanohydrins and azidohydrins. These reactions were performed in acetonitrile and aqueous media to produce the corresponding products in high yields and short reaction times. The catalyst can be recovered and reused several times. |
| format | Article |
| id | doaj-art-6c1011b1461c4f8086f6dd1b76b6417d |
| institution | OA Journals |
| issn | 1016-1104 2345-6914 |
| language | English |
| publishDate | 2015-09-01 |
| publisher | University of Tehran |
| record_format | Article |
| series | Journal of Sciences, Islamic Republic of Iran |
| spelling | doaj-art-6c1011b1461c4f8086f6dd1b76b6417d2025-08-20T01:53:00ZengUniversity of TehranJournal of Sciences, Islamic Republic of Iran1016-11042345-69142015-09-0126322323155310Poly (vinylpyrrolidone)-Grafted Silica as a Polymeric Cosolvent Catalyst for Organic Transformations in Organic and Aqueous MediaS. Ghasemi0B. Tamami1R. Teymoori2H. Allahyari3Department of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 7194684795, Islamic Republic of IranDepartment of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 7194684795, Islamic Republic of IranDepartment of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 7194684795, Islamic Republic of IranDepartment of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 7194684795, Islamic Republic of IranPoly (vinylpyrrolidone)-grafted silica as an organic-inorganic hybrid material was used as an effective heterogeneous polymeric cosolvent catalyst in organic reactions. This modified silica catalyzed nucleophilic displacement of alkyl halides for easy preparation of alkyl thiocyanates, alkyl cyanides, alkyl azides and alkyl aryl ethers. Furthermore, the catalyst was applied for the conversion of epoxides to thiranes, thiocyanohydrins and azidohydrins. These reactions were performed in acetonitrile and aqueous media to produce the corresponding products in high yields and short reaction times. The catalyst can be recovered and reused several times.https://jsciences.ut.ac.ir/article_55310_115583b73a7ed3b54b99894b05ecf63e.pdfpolymeric cosolventpoly (vinylpyrrolidone)nucleophilic substitution reactionsring opeing of epoxides |
| spellingShingle | S. Ghasemi B. Tamami R. Teymoori H. Allahyari Poly (vinylpyrrolidone)-Grafted Silica as a Polymeric Cosolvent Catalyst for Organic Transformations in Organic and Aqueous Media Journal of Sciences, Islamic Republic of Iran polymeric cosolvent poly (vinylpyrrolidone) nucleophilic substitution reactions ring opeing of epoxides |
| title | Poly (vinylpyrrolidone)-Grafted Silica as a Polymeric Cosolvent Catalyst for Organic Transformations in Organic and Aqueous Media |
| title_full | Poly (vinylpyrrolidone)-Grafted Silica as a Polymeric Cosolvent Catalyst for Organic Transformations in Organic and Aqueous Media |
| title_fullStr | Poly (vinylpyrrolidone)-Grafted Silica as a Polymeric Cosolvent Catalyst for Organic Transformations in Organic and Aqueous Media |
| title_full_unstemmed | Poly (vinylpyrrolidone)-Grafted Silica as a Polymeric Cosolvent Catalyst for Organic Transformations in Organic and Aqueous Media |
| title_short | Poly (vinylpyrrolidone)-Grafted Silica as a Polymeric Cosolvent Catalyst for Organic Transformations in Organic and Aqueous Media |
| title_sort | poly vinylpyrrolidone grafted silica as a polymeric cosolvent catalyst for organic transformations in organic and aqueous media |
| topic | polymeric cosolvent poly (vinylpyrrolidone) nucleophilic substitution reactions ring opeing of epoxides |
| url | https://jsciences.ut.ac.ir/article_55310_115583b73a7ed3b54b99894b05ecf63e.pdf |
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