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敏zxm

金虫 (正式写手)

[求助] 英译汉,求助

求下面几句话 的翻译,是j.o.c.文献

Furthermore, the reactions of unsymmetrical para-substituted azobenzenes 1p and 1q containing electron-rich and electron-deficient groups (Me
and CF3) with 2a were screened under standard reaction conditions (Scheme 1). In the case of 1p, no significant distinction of product distribution between 3pa and 3pb was observed.

Moreover, this transformation is not limited to aryl isocyanates. Aliphatic isocyanates such as benzyl isocyanate (4p) and cyclopentyl isocyanate (4q) and n-hexyl isocyanate (4r) also participated in redox-neutral amidation reactions to furnish 5p−5r, respectively. At this stage, we are unclear about  the formation of a mixture of E and Z isomers in the case of aryl and alkyl isocyanates

In conclusion, we disclosed the rhodium(III)-catalyzed direct C−H N-sulfonyl amidation of azobenzenes with arylsulfonyl isocyanates. This protocol  allows the generation of Nacylsulfonamides, which are known to be crucial synthetic precursors of biologically active compounds. In addition, this
protocol was successfully applied to aryl and alkyl isocyanates to deliver ortho-amidated azobenzenes. Further applications of our protocol to the    synthesis of bioactive molecules and a detailed mechanistic investigation are in progress.
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jiangguofeng

金虫 (著名写手)

【答案】应助回帖

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敏zxm: 金币+20, 翻译EPI+1, ★★★很有帮助 2016-12-16 19:40:37
此外,在标准反应条件下对不对称的对位取代的偶氮苯1p和带有富电子和贫电子基团(甲基和CF3)的1q与2a的反应进行了筛选(图1)。在1p的情况下, 没有观察到3pa和3pb之间的产物分布有明显的差别。

而且这种转化作用不仅限于芳基异氰酸酯。异氰酸苄酯(4p)、异氰酸环戊酯(4q)和异氰酸正己酯(4r)一类的脂族异氰酸酯也参与氧化还原中性酰胺化反应,分别得到5p - 5r。目前我们对于在芳基和烷基青酸酯的情况下E和Z异构体混合物的形成尚不清楚

总之,我们揭示了偶氮苯与芳基磺酰异氰酸酯的铑(III)直接催化的C-H N-磺酰基酰胺化。这一方案得以生成酰基磺胺类,已知这是生物学活性物质的重要的合成前体。另外,这一方案成功地应用到芳基和异氰酸烷基酯以提供邻酰胺化偶氮苯。我们的方案对于生物活性分子合成方面的其他应用和详细机理研究正在进行中。
2楼2016-12-16 12:16:52
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敏zxm

金虫 (正式写手)

引用回帖:
2楼: Originally posted by jiangguofeng at 2016-12-16 12:16:52
此外,在标准反应条件下对不对称的对位取代的偶氮苯1p和带有富电子和贫电子基团(甲基和CF3)的1q与2a的反应进行了筛选(图1)。在1p的情况下, 没有观察到3pa和3pb之间的产物分布有明显的差别。

而且这种转化作用不 ...

谢谢
3楼2016-12-16 19:40:47
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