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[求助]
【2+2+2】環(huán)加成反應的論文
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1. Despite such importance, the use of [2+2+2] cycloaddition for the construction of these compounds has received little attention.Such a reaction requires the incorporation of two heteroatom coupling partners to one hydrocarbon coupling partner. 2. The first example by Hoberg involved the cycloaddition of an alkyne and two isocyanates in the presence of stoichiometric Ni(0) producing a pyrimidine dione.11 Our lab revisited this reactivity and successfully developed the first catalytic [2+2+2] route to pyrimidine diones.12 (11和12為上標) |
金蟲 (著名寫手)
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1. 盡管構(gòu)建這些化合物的[2+2+2]環(huán)化加成的應用如此重要, 卻很少受到關(guān)注。這種反應需要兩個雜原子耦合伙伴與一個烴耦合伙伴的結(jié)合。 2. 霍貝格的第一個樣品涉及在化學計量的產(chǎn)生嘧啶二酮的Ni(0)存在下一個炔和兩個異氰酸酯的環(huán)化加成。11 我們實驗室重新審視這種反應作用并成功地開發(fā)出第一個用于制備嘧啶二酮的催化[2+2+2]方法。12 |
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