دسترسی یکپارچه به مقالات، کتابها و ارائههای علمی استاد دکتر محمدعلی زلفیگل؛ گردآوریشده از منابع معتبر دانشگاهی
Synthetic Communications Vol. 31, No. 13, 1965–1970
A combination of periodic or iodic acids and sodium nitrite in the presence of wet SiO2 was used as an effective oxidizing agent for the oxidation of urazoles and bis-urazoles to their corresponding triazolinediones under mild and heterogen…
DOI: 10.1081/scc-100104412Synthetic Communications Vol. 31, No. 8, 1161–1166
A combination of potassium monopersulfate and sodium nitrite in the presence of wet SiO2 was used as an effective nitrosating agent for the nitrosation of secondary amines to their corresponding nitroso derivatives under mild and heterogene…
DOI: 10.1081/scc-100103999Synthetic Communications Vol. 31, No. 3, 359–365
A combination of iodic or periodic acids and sodium nitrite in the presence of wet SiO2 was used as an effective nitrosating agent for the nitrosation of secondary amines to their corresponding nitroso derivatives under mild and heterogeneo…
DOI: 10.1081/scc-100000524Journal of the Korean Chemical Society Vol. 45, No. 6, 546–548
Neat chlorosulfonic acid reacts with silica gel to give silica sulfuric acid in which sulfuric acid is immobilized on the surface of silica gel via covalent bond. A combination of silica sulfuric acid and wet SiO was used as an effective de…
Vol. 10, No. 1, 59–67
The present paper describes the release of benzocaine from polymer carder. The chemically controlled release method has been applied in which the benzocaine (drug) with active group (NH2) links up with the spacer group (p-hydroxybenzaldehyd…
ChemInform Vol. 31, No. 45
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a…
DOI: 10.1002/chin.200045052Synthetic Communications Vol. 30, No. 21, 3919–3923
A combination of Mg(HSO4)2 and NaNO2 in the presence of wet SiO2 was used as an effective oxidizing agent for the oxidation of dihydropyridines to their corresponding pyridine derivatives at room temperature with moderate to excellent yield…
DOI: 10.1080/00397910008086949ChemInform Vol. 31, No. 43
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a…
DOI: 10.1002/chin.200043147ChemInform Vol. 31, No. 37
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a…
DOI: 10.1002/chin.200037055ChemInform Vol. 31, No. 36
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a…
DOI: 10.1002/chin.200036066Journal of Chemical Research Vol. 2000, No. 9, 420–422
A combination of inorganic chloride salts [e.g. WCl6, AlCl 3 and ZnCl 2 ] and sodium nitrite in the presence of wet SiO 2 were used as an effective nitrosating agent for the nitrosation of secondary amines to their corresponding nitroso der…
DOI: 10.3184/030823400103168119ChemInform Vol. 31, No. 34
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a…
DOI: 10.1002/chin.200034060ChemInform Vol. 31, No. 33
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a…
DOI: 10.1002/chin.200033088Synthetic Communications Vol. 30, No. 16, 2945–2950
A combination of NaHSO4.H2O and NaNO2 in the presence of wet SiO2 was used as an effective oxidizing agent for the oxidation of dihydropyridines to their corresponding pyridine derivatives at room temperature with excellent yields.
DOI: 10.1080/00397910008087444Synthetic Communications Vol. 30, No. 14, 2573–2585
A combination of inorganic acidic salts or silica gelsupported inorganic acids and sodium nitrite in the presence of wet SiO2 was used as an effective oxidizing agent for the oxidation of urazoles and bis-urazoles to their corresponding tri…
DOI: 10.1080/00397910008087422ChemInform Vol. 31, No. 24
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a…
DOI: 10.1002/chin.200024058Synthetic Communications Vol. 30, No. 11, 2057–2060
A combination of inorganic acidic salts or silica gel supported inorganic acids and sodium nitrite in the presence of wet SiO2 was used as an effective nitrosating agent for the nitrosation of secondary amines to their corresponding nitroso…
DOI: 10.1080/00397910008087255Synthetic Communications Vol. 30, No. 10, 1689–1694
Nitrophenol can be obtained via nitrosation-oxidation of phenol with C2H2O4.2H2O, NaNO2, and wet SiO2 at room temperature in high yield. Direct mono or dinitration of phenol was also performed with C2H2O4. 2H2O, metal nitrates (ionic) and w…
DOI: 10.1080/00397910008087210Synthetic Communications Vol. 30, No. 9, 1593–1597
Thiols can be readily converted to their corresponding thionitrite with a combination of inorganic acidic salts and sodium nitrite in dichloromethane at room temperature. Disulfides result from the homolytic cleavage of the sulfur-nitrogen …
DOI: 10.1080/00397910008087194Journal of Chemical Research Vol. 2000, No. 4, 167–169
A combination of inorganic acidic salts or oxalic acid dihydrate and sodium nitrate in the presence of wet SiO 2 was used as an effective oxidising agent for the oxidation of dihydropyridines to their corresponding pyridine derivatives at 4…
DOI: 10.3184/030823400103167011Synthetic Communications Vol. 30, No. 3, 551–558
A combination of oxalic acid dihydrate and sodium nitrite in the presence of wet SiO2 was used as an effective oxidizing agent for the oxidation of dihydropyridines to their corresponding pyridine derivatives at room temperature with excell…
DOI: 10.1080/00397910008087352ChemInform Vol. 31, No. 1
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a…
DOI: 10.1002/chin.200001160ChemInform Vol. 30, No. 32
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a…
DOI: 10.1002/chin.199932085