Silica-Polyethyleneglycols/N 2 O 4 Complexes as Heterogeneous Nitrating and Nitrosating Agents |
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Authors: | N Iranpoor H Firouzabadi R Heydari |
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Institution: | Shiraz University , Shiraz, Iran |
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Abstract: | Silica-chloride was reacted with different quantities of H(OCH 2 CH 2 ) n OH (n = 2-4) to furnish silica-based linear polyethylene glycols and cyclic polyethylene glycolic ethers. The N 2 O 4 complex of silica-tetraethylene glycolic ether ( III ) was selected and used as a stable, cheap, and heterogeneous silica-based reagent for the selective mono- and dinitration of phenols and nitrosation of thiols. |
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Keywords: | Nitration Nitrosation Phenols Silica-polyethyleneglycols/N 2 O 4 Thiols Thionitrites |
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