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Your search keyword '"Ghassemzadeh, Mitra"' showing total 6 results
Start Over Author "Ghassemzadeh, Mitra" Topic silica gel
6 results on '"Ghassemzadeh, Mitra"'

1. One-Pot Conversion of Aldoximes Into Nitriles via Aldoxime Tosylates Under Microwave Irradiation.

Author

Oskooie, Hossein A., Heravi, Majid M., Jaddi, Zinab, and Ghassemzadeh, Mitra

Subjects
SILICA gel, NITRILES, IRRADIATION, MICROWAVE heating, MICROWAVES
Abstract

Silica-gel-supported aldoximes react with tosyl chloride at room temperature to give the corresponding aldoxime tosylates. These supported aldoxime tosylates were directly converted to their corresponding nitriles in high yields under microwave irradiation. [ABSTRACT FROM AUTHOR]

Published
2005
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2. OXIDATIVE DEPROTECTION OF TRIMETHYLSILYL ETHERS WITH HEXAMETHYLENETETRAMINE- BROMINE SUPPORTED ONTO SILICA GEL UNDER MICROWAVE IRRADIATION IN SOLVENTLESS SYSTEM.

Author

Dehkordi, Mahboobeh Behnam, Heravi, Majid M., Khosrofar, Parviz, Ziafat, Ahmad, and Ghassemzadeh, Mitra

Subjects
BROMINE, SILICA gel, ETHERS, CARBONYL compounds, IRRADIATION
Abstract

Hexamethylenetetramine-bromine supported onto silica gel rapidly converts trimethylsilyl ethers to their corresponding carbonyl compounds under microwave irradiation in solventless system. [ABSTRACT FROM AUTHOR]

Published
2004
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3. SELECTIVE OXIDATION OF BENZYLIC ALCOHOLS USING CAN SUPPORTED ONTO SILICA GEL UNDER MICROWAVE IRRADIATION.

Author

Heravi, Majid M., Oskooie, Hossein A., Kazemian, Pegah, Drikvand, Fatemeh, and Ghassemzadeh, Mitra

Subjects
OXIDATION, SILICA gel, ALCOHOLS (Chemical class), AMMONIUM nitrate, IRRADIATION, ALDEHYDES
Abstract

Cerium ammonium nitrate (CAN) adsorbed on HNO3/silica gel is a mild reagent for selective oxidation of benzylic alcohols to the corresponding aldehydes under microwave irradiation in solventless system. [ABSTRACT FROM AUTHOR]

Published
2004
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4. SYNTHESIS OF [1,3,4]THIADIAZOLO[2,3-C][1,2,4]TRIAZIN-4-ONES USING SULFURIC ACID SUPPORTED ONTO SILICA GEL IN SOLVENTLESS SYSTEM.

Author

Heravi, Majid, Ramezanian, Navid, Sadeghi, Majid, and Ghassemzadeh, Mitra

Subjects
CARBOXYLIC acids, AROMATIC compounds, TRIAZINES, SILICA gel, ORGANIC acids
Abstract

[1,3,4]Thiadiazolo[2,3-c][1,2,4]triazin-4-ones were prepared by one pot condensation and cyclization of 4-amino-[1,2,4]triazine-3-thione-5-ones with various aromatic carboxylic acids in the presence of silica gel sulfuric acid in solventless condition. [ABSTRACT FROM AUTHOR]

Published
2004
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5. THIATION OF HETEROCYCLES USING SILICA GEL SUPPORTED P2S5 UNDER MICROWAVE IRRADIATION IN SOLVENTLESS SYSTEM.

Author

Heravi, MajidM., Rajabzadeh, Ghadir, Rahimizadeh, Mohammad, Bakavoli, Mehdi, and Ghassemzadeh, Mitra

Subjects
HETEROCYCLIC compounds, SILICA gel, CARBONYL compounds, ORGANIC synthesis
Abstract

The efficient and environmentally friendly thiation of heter-ocycles using P2S5 under microwave irradiation in solvent free condition is described. [ABSTRACT FROM AUTHOR]

Published
2001
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6. Chromium Trioxide Supported onto Wet Silica Gel: Rapid Oxidation of Alcohols to Carbonyl Compounds Under Microwave Irradiation in Solventless System.

Author

Heravi, Majid M., Farhangi, Nasrin, Beheshtiha, Yahya Sh., Assadolah, Karim, Ghassemzadeh, Mitra, and Tabar-Hydar, Koroush

Subjects
CHROMIUM compounds, SILICA gel, OXIDATION, CARBONYL compounds, ALCOHOLS (Chemical class), MICROWAVES, IRRADIATION
Abstract

In an environmentally benign system, alcohols are rapidly oxidized to carbonyl compounds using CrO 3 supported onto wet silica gel as an oxidant under microwave irradiation. [ABSTRACT FROM AUTHOR]

Published
2002
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