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金寅圭,尹容鎭 成均館大學校 1980 論文集 Vol.27 No.-
In order to synthesize 3-hydroxy-5-methyl-isoxazole, a potent fungicide, we attempt to obtain α,β-dibromobutyramide. Acid hydrolyis of crotonitrile followed by bromination was tried to obtaine α, β-dibromobutyramide in vain. However, the reverse order, namely, bromination followed by acid hydrolysis gives the desired produit in good yield (94%). The compound was identifified by ir, uv, elemental analysis and the derivative synthesis.
Pyrethroid 중간체 Δ^4-Aldehyde 합성
金寅圭,金永德,金英愛 성균관대학교 기초과학연구소 1985 論文集 Vol.36 No.1
The active ingradients of pyrethrum flowers-pyrethroids-have been showing outstanding insecticidal activity but low mammalian toxicity. Remarkbly, their physiological activity is closely assoiated with cyclopropane ring. A number of synthetic routes to the cyclorproane ring are reported and γ, δ-unsaturated aldehyde plays a key role in many of these synthesis. For this reason, a new versatile synthesis of the aldehyde is reported here. With good yield 5-methyl-4-hexenal was obtained from 2-methyl-3-butene-2-ol and ethyl vinyl ether.