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4,4-di(4,4,5,5-tetramethyl imidazoline-3-oxidation-1-oxy radical) phenyl ether and preparation method thereof

A tetramethylimidazoline, free radical technology, applied in 4 fields, can solve the problems of low yield, difficult, difficult to synthesize triradicals, etc., and achieves the effects of high yield, few synthesis steps, and simple operation

Inactive Publication Date: 2010-07-28
NANKAI UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the synthesized free radicals at home and abroad are single free radicals. The coordination form of single free radicals and metals is single, and it is difficult to form high-dimensional structures to obtain novel properties. At present, "free radicals" - The structurally characterized molecular magnet Tc[Mn(hfac) 2 ] 3 ·(rad) 2 Tc=46K (1996) [H.Iwamura et al., J.Am.Chem.Soc., 118, 1803, 1996]
This molecular ferromagnet is a complex of three free radicals and Mn(II), the synthesis of three free radicals is difficult and the yield is low

Method used

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  • 4,4-di(4,4,5,5-tetramethyl imidazoline-3-oxidation-1-oxy radical) phenyl ether and preparation method thereof
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  • 4,4-di(4,4,5,5-tetramethyl imidazoline-3-oxidation-1-oxy radical) phenyl ether and preparation method thereof

Examples

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Embodiment

[0015] Synthesis of 2,3-Dimethyl-2,3-Dihydroxyaminobutane

[0016] Mix 90 grams (1.0mol) of 2-nitropropane and 168mL of 6N sodium hydroxide solution, cool in an ice-water bath, stir electromagnetically for half an hour, slowly add 80g (0.5mol) of liquid bromine dropwise, after the dropwise addition, add 300mL Continue to stir with absolute ethanol for half an hour, then reflux at 85°C for 3 hours, white flaky crystals are precipitated, naturally cool to room temperature, filter with suction, wash twice with dilute sodium hydroxide solution, wash several times with distilled water, and dry , to obtain 2,3-dimethyl-2,3-dinitrobutane in the form of 60 g of white flaky crystals, with a yield of 66% and a melting point of 129-130°C.

[0017] Dissolve 10 grams of ammonium chloride in 180 mL of a 1:1 mixed solvent of ethanol: water, add 17.5 grams of 2,3-dimethyl-2,3-dinitrobutane in an ice-water bath, and stir for half hour, slowly add purified zinc powder 40 grams in 3 hours with ...

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Abstract

The invention relates to 4,4-di(4,4,5,5-tetramethyl imidazoline-3-oxidation-1-oxy radical) phenyl ether and a preparation method thereof. The structural formula of the ether is shown in the specification of the invention. The ether is a diradical with potential application value and can form a chain-type structure which is similar to [Co(hfac)2(NITp-PhOMe)]n when combined with the hexafluoroacetyl acetonate of the transition metal Co(II), which provides an important way for the radical to be synthesized into a molecular ferromagnet, and the biradical also has the characteristics of relatively few synthesizing steps, simple operation and high yield.

Description

technical field [0001] The present invention relates to the preparation of diradical compounds, especially a kind of 4,4'-bis(4,4,5,5-tetramethylimidazoline-3-oxidation-1-oxyl radical) phenyl ether and Preparation. Background technique [0002] Molecular ferromagnets refer to the synthesis of compounds with magnet-like properties at a certain temperature Tc by the method of preparing molecular compounds. The emergence of molecular ferromagnets has enabled magnetic materials that were only composed of metal or ion lattices to be realized in solution chemistry under normal conditions in the form of molecular assemblies. The diversity of molecular binding forms has made a breakthrough in the research of ferromagnets. [0003] Free radicals are substances containing unpaired electrons. There are many kinds of them, and they have very special optical, electrical, and especially magnetic properties. Free radicals containing coordination sites will exhibit peculiar magnetic prop...

Claims

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Application Information

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IPC IPC(8): C07D233/22
Inventor 马越王超廖代正
Owner NANKAI UNIV
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