The reaction mechanism of Claisen rearrangement obtained by transition state spectroscopy and single direct-dynamics trajectory.

The reaction mechanism of Claisen rearrangement obtained by transition state spectroscopy and single direct-dynamics trajectory.
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DOI:
10.3390/molecules18021995
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发表时间:
2013-02-04
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Kobayashi T
Kobayashi T
中科院分区:
其他
文献类型:
--
作者:
Iwakura I;Kaneko Y;Hayashi S;Yabushita A;Kobayashi T

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化学反应过程中的化学键断裂和形成可以使用“过渡态光谱”观察。将过渡态光谱的测量结果与单直接动力学轨道的模拟结果进行比较,阐明了烯丙基乙烯基醚Claisen重排反应的动力学。通过观察纯样液的反应,估算了由直链结构转变为类芳香六元环结构形成C1-C6键的时间常数。结果表明,该反应通过三个步骤进行,所需时间比气相计算所预期的要长。这一发现提供了新的假设和讨论,有助于反应机理分析领域的发展。
Chemical bond breaking and formation during chemical reactions can be observed using “transition state spectroscopy”. Comparing the measurement result of the transition state spectroscopy with the simulation result of single direct-dynamics trajectory, we have elucidated the reaction dynamics of Claisen rearrangement of allyl vinyl ether. Observed the reaction of the neat sample liquid, we have estimated the time constants of transformation from straight-chain structure to aromatic-like six-membered ring structure forming the C1-C6 bond. The result clarifies that the reaction proceeds via three steps taking longer time than expected from the gas phase calculation. This finding provides new hypothesis and discussions, helping the development of the field of reaction mechanism analysis.
DOI: 10.1021/j100017a067
发表时间: 1995-04-27
影响因子: --
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