This paper explores the effectiveness of network negotiation, which can not only provide better suggestions for government decision-making, but also regulate the network order and create a more harmonious network ecological environment. Based on this, this study constructs an evolutionary game model between government and netizens from the perspective of Internet. This paper uses Python tools to analyze the evolution of the game model. It explores the impact of initial strategy, the additional cost of efficient negotiation and the conversion rate of netizens on the evolution results. Furthermore, it introduces the motivate mechanism to study the impact of reward mechanism and punishment mechanism on system evolution.
A novel acid-promoted rearrangement is disclosed. In the previously unknown transformation, an allyl group migrated to an in situ formed carbocation stabilized by an electron-rich aryl or heteroaryl group, resulting in a stereoselective intramolecular Grob fragmentation. The outcome of the rearrangement observed with an array of substrates can be satisfactorily rationalized using a working hypothesis with the aid of a six-membered transition state similar to those proposed for the anionic oxy-Cope or oxonia-Cope rearrangements, but involving only one instead of two double bonds.
In an effort to find answers to the tantalizing questions about the absolute configurations of a group of long‐known natural phenylpropanoids with very similar structures but different signs for the optical rotations, the compounds in question were synthesized in enantiomerically pure form using Evans asymmetric alkylation to generate the stereogenic centres with predefined absolute configurations. The 1H and 13C NMR spectra of the synthetic products were very consistent with those reported for their natural counterparts. In most cases, the optical rotations were also consistent with the corresponding data for the natural samples. The new findings not only allowed unequivocal assignments of the absolute configurations for the natural products, but also revealed that the configurations of closely related compounds from the same plant may be different.
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