Synthesis of 5-nitro-3,4-dihydropyrimidin-2(1<Emphasis Type="Italic">H</Emphasis>)-ones catalyzed by metal salts. Retro-Henry reaction with formation of <Emphasis Type="Italic">N,N′</Emphasis>-disubstituted ureas |
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收稿时间: | 14 May 2005 |
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