• Bulletin of the Korean Chemical Society
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• 제25권6호
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• pp.775-776
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• 2004

• Bulletin of the Korean Chemical Society
• /
• 제29권9호
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• pp.1657-1658
• /
• 2008

• Bulletin of the Korean Chemical Society
• /
• 제33권6호
• /
• pp.2087-2090
• /
• 2012

• Bulletin of the Korean Chemical Society
• /
• 제10권1호
• /
• pp.112-112
• /
• 1989

• Bulletin of the Korean Chemical Society
• /
• 제11권6호
• /
• pp.479-481
• /
• 1990

• Bulletin of the Korean Chemical Society
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• 제10권4호
• /
• pp.366-368
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• 1989

The 3-formyl-2-cephem 4, available from 7-aminocephalosporanic acid has been converted to C-3 vinylic cephems. The reactions involved are the Grignard addition to 4, the conversion of the resulting alcohols to mesylates, and the elimination of the mesyl group by LiCl. When ethylmagnesium iodide is used, only 3-[(E)-1-propenyl] cephem is obtained, which is not easily available by conventional Wittig reaction.

• Bulletin of the Korean Chemical Society
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• 제23권1호
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• pp.149-150
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• 2002

• Bulletin of the Korean Chemical Society
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• 제24권5호
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• pp.667-670
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• 2003

• 한국안전학회지
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• 제33권1호
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• pp.54-61
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• 2018

In this study, we developed a system for information sharing and cooperation support system among the accident response organizations to enable prompt and efficient response in responding to chemical accidents. In other words, by applying mobile messenger function, it is proposed to improve the chemical accident response system that provides information necessary for accident response promptly and accurately, and facilitates bi-directional communication between accident response organizations and field responders, thereby enabling efficient and organic response. As a result of comparing the information provision time before and after the chemical accident of chemical accident response information sharing system, the ratio of processing of substance information and chemical air diffusion information within 30 minutes was improved by 8% and 32%, respectively. As a result of this study, applying the chemical accident response information sharing system to the chemical accident response is expected to contribute to the improvement of the system and the ability to cope with the accident more effectively.

• Bulletin of the Korean Chemical Society
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• 제12권1호
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• pp.57-60
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• 1991

Benzosilacyclobutenes were prepared from the reactions of 1,1-dichlorobenzosilacyclobutene with Grignard reagents or t-butyllithium. In the thermal reactions with alcohols, benzosilacyclobutenes underwent both benzyl-silicon and aryl-silicon bond rupture to yield (dialkyl)alkoxy-o-tolylsilanes and (dialkyl)alkoxybenzylsilanes, respectively. The photochemical reactions, however, produced only the former products via o-silaquinone methides.