• Bulletin of the Korean Chemical Society
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• v.31 no.4
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• pp.781-788
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• 2010

Experimental and theoretical studies show that all covalent azides possess a nonlinear azide group. They also rationalize this remarkable structural feature. We have seen that the most important non-covalent contributions in the covalently bound azides system (X-N1-N2-N3) are the $\pi$-delocalization over the entire molecule and a strong negative hyperconjugation which donates electron density from the filled $\sigma$ (X-N1) orbital into the unfilled, antibonding $\pi^*$ (N2-N3) orbital. For transition metal azide complexes, a bent configuration and a small difference between the N-N bond lengths, generally the longer one being adjacent to the transition metal, were observed.

• Bulletin of the Korean Chemical Society
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• v.24 no.2
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• pp.249-252
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• 2003

• Bulletin of the Korean Chemical Society
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• v.35 no.12
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• pp.3433-3436
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• 2014

A new method for the synthesis of 2,2-dimethyl-6-substituted 4-piperidone was developed; two equivalents of acetone were annulated with N-unsubstituted imines in-situ generated from benzyl azides using a ruthenium catalyst in the presence of $\small{L}$-proline.

• Bulletin of the Korean Chemical Society
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• v.25 no.3
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• pp.420-422
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• 2004

• Archives of Pharmacal Research
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• v.16 no.2
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• pp.94-98
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• 1993

Various hydrazines such as aryl-, carbonyl-, and sulfonyl-hydrazine were reacted with dinitrogen tetroxide to give the corresponding azides in excellent yields under mild ocnditions at low temperature $(-20-40^\circ{C)}$ in acetonitrile. The reaction appears to be initiated by formation of the .betha.-nitroso hydrazine intermediate which converts into the azide product.

• Bulletin of the Korean Chemical Society
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• v.24 no.2
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• pp.253-255
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• 2003

• Bulletin of the Korean Chemical Society
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• v.26 no.11
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• pp.1790-1794
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• 2005

Fréchet-type dendritic benzyl azides were efficiently synthesized using 5-(azidomethyl)-1,3-dihydroxybenzene as an azide focal point functionalized unit by adding a generation to the existing dendron and applied for the construction of dendrimers containing 1,2,3-triazole rings as connectors via click chemistry with a tripodal acetylene core.

• Bulletin of the Korean Chemical Society
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• v.29 no.8
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• pp.1561-1564
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• 2008

Although the use of Cu(II) salts as catalysts without reductants is limited in the cycloaddition of acetylenes with azides, the catalytic system employing average 10 nm CuO(II) nanoparticles in the absence of reductants shows good catalytic activity to form 1,4-disubstituted 1,2,3-triazoles even in wet THF as well as water. It is also noticeable that CuO(II) nanoparticle catalysts can be recycled with consistent activity. A range of alkynes and azides were subject to the optimized CuO(II) nanoparticle-catalyzed cycloaddition reaction conditions to afford the desired products in good yields.

• Journal of the Korean Chemical Society
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• v.29 no.4
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• pp.437-440
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• 1985

Organic azides were reduced to organic amines in the presence of tetracarbonylhydridoferrate(O) as a highly selective reducing agent at room temperature under carbon monoxide atmosphere. Particularly, benzoylazide gave ethylphenylcarbamate at room temperature but gave benzamide quantitatively at -40$^{\circ}$ in the presence of tetracarbonylhydridoferrate under carbon monoxide atmosphere.

• Bulletin of the Korean Chemical Society
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• v.23 no.5
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• pp.655-656
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• 2002