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題名 | 2,4-二芳香基半卡腙之製備及其酸性轉化合成2,4-二芳香基-2,4-二氫-1,2,4-三唑-3-酮=Preparation of 2,4-Diarylsemicarbazides and Their Conversion into 2,4-Diaryl-2,4-dihydro-1,2,4-triazol-3-ones |
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作者姓名(中文) | 陳世平; 葉茂榮; | 書刊名 | 化學 |
卷期 | 56:2 1998.06[民87.06] |
頁次 | 頁79-88 |
分類號 | 346.01 |
關鍵詞 | 2,4-二芳香基半卡肼; 2,4-二芳香基半卡腙; 環化反應; 2,4-二芳香基-2,4-二氫-1,2,4-三唑-3-酮; 2,4-diarylsemicarbazides; 2,4-diarylsemicarbazones; Cyclization; 2,4-diaryl-2,4-dihydro-1,2,4-triazol-3-ones; |
語文 | 中文(Chinese) |
中文摘要 | 2,4-二芳香基半卡�R在酸性催化下,可與各種醛類進行縮合反應生成高產率之2,4 - 二芳香基半卡�h,生成的半卡�h可利用酸性催化環化合成相對應之 2,4- 二芳香基 -2,4- 二氫 -1,2,4- 三唑 -3- 酮。 |
英文摘要 | 2,4-Diarylsemicarbazones were synthesized in high yields by the reaction of 2,4-diarylsemicarbazides with aldehydes in the presence of acid catalysts. The semicarbazones(4) were easily converted into 2,4-diaryl-2,4-dihydro-1,2,4-triazol-3-ones(5) in good yields by cyclization with acid. |
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