匿名使用者
匿名使用者 發問時間: 社會與文化語言 · 2 0 年前

這是一段外國 (綠色化學)的原文.可否請大家幫忙(中翻英)

In order to show the high selectivity of the procedure, we investigated competitive reactions for the preparation of the 1 , 1-diacetates from benzaldehyde in the presence of benzophenone or acetophenone using a catalytic amount of KHSO4 under solvent-free conditions at room temperature . We found that ketones did not produce any acylals under the reaction conditions. This result suggested that chemo-selective protection of aldehydes in the presence of ketones could be achieved with this procedure(Scheme2).

In conclusion, a very simple and convenient catalytic method has been developed for the aynthesis of 1, 1-diacetates from a variety of aldehydes under solvent-free conditions. The method has advantages in terms of high yields, high selectivity, short reaction times, ease of operation, and use of a relatively non-toxic, available and inexpensive catalyst. We believe this protocol will be useful addition to the modern synthetic methodologies.

非常感謝幫忙的人.因為礙於英文能力.所以只好麻煩大家

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可否請大家不要用翻譯軟體

2 個解答

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  • 2 0 年前
    最佳解答

    為了出示高選擇性的程式,我們調查競爭的反應為準備的1,1-酮醋酸鹽從苯甲醛在前面於苯甲酮或醋苯酮使用一催化劑總計的KHSO4在下面溶媒-空線狀態在室溫.我們發現酮類沒有生產任何acylals在下反應條件.這結果建議化學-選擇保護的乙醛酮類的前面可能是說完這個程式達到(Scheme2).

    最後,非常簡單的和方便的反應的方法被發展了為aynthesis的1,1-酮醋酸鹽從各種乙醛在下面溶媒-自由條件.方法有優勢根據高產量,高選擇性,短的反應時期,悠閑的操作,和用途的相對無毒的,有用的和廉價的催化劑.我們相信這協議會是有用的加到現代的合成的方法論.

    參考資料: 自己
  • 1 0 年前

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