A new mechanistic insight on beta-lactam systems formation from 5-nitroisoxazolidines

Jasinski Radomir

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A new mechanistic insight on beta-lactam systems formation from 5-nitroisoxazolidines

机译：对5-硝基异恶唑烷的β-内酰胺系统形成的新机制洞察力

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DFT calculations at various theory levels unequivocally show that conversion of 5-nitroisoxazolidines into beta-lactams does not take place via a ring opening step (as was hitherto suggested), but takes place according to a three-step, domino-type reaction. Quantum-chemical studies do not indicate the existence of an alternative, kinetically allowed reaction mechanism. In addition, it was shown that this mechanism is a general one, and can be related to a wider class of compounds as an interesting alternative to popular synthesis methods of beta-lactams.

机译：在各种理论水平下的DFT计算明确表明，将5-硝基二氧唑唑烷的转化为β-内酰胺，不通过环开口步骤（如图所示的迄今为止），而是根据三步，多米诺型反应进行。量子化学研究并未表明存在替代的动力学的反应机制。另外，显示该机制是一般的机制，并且可以与较宽的化合物相关，作为β-内酰胺的流行合成方法的一个有趣的替代方案。

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《RSC Advances》 |2015年第62期|共3页
作者
Jasinski Radomir;
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Cracow Univ Technol Inst Organ Chem &

Technol Warszawska 24 PL-31155 Krakow Poland;

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正文语种 eng
中图分类化学;
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A new mechanistic insight on beta-lactam systems formation from 5-nitroisoxazolidines

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