Publications by authors named "Jianyou Zhao"

Article Synopsis
  • - A new method for oxidizing alcohols to aldehydes and ketones using hydroxyphthalimide (NHPI) as a catalyst is introduced, allowing for practical and recyclable processes.
  • - This electro-oxidation technique operates under constant current in a single undivided setup, yielding high amounts of products from various alcohols.
  • - Key benefits of this approach include recyclable materials (catalyst, electrode, etc.), mild reaction conditions, ease of use, good tolerance for functional groups, and potential for large-scale production.
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An electrochemical synthesis of vinyl, alkyl, and allyl sulfones using sodium sulfinates and olefins was reported. This method uses direct current to pass through an undivided cell equipped with graphite carbon electrodes, and a series of diverse sulfone compounds can be synthesized at room temperature in high yields.

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There are several challenging problems such as the usage of combustible and hazardous hydrogen sources and severe environmental pollution in the conventional reduction of aldehydes/ketones to alcohols. We report here a practical, safe, and green electrochemical reduction, which solves these problems to a large extent. Through an undivided cell, Zn(+) and Sn(-) as the electrode, tetrabutylammonium chloride (TBAC) as the electrolyte, water as the solvent and hydrogen source, a wide range of aldehydes and ketones are converted into the corresponding alcohols in mild conditions.

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An electrochemistry-promoted oxidative cleavage of (sp)C-C(sp)/H bonds in alkylarenes was developed. Various aryl alkanes can be smoothly converted into ketones/aldehydes under aerobic conditions using a user-friendly undivided cell setup. The features of air as oxidant, scalability, and mild conditions make them attractive in synthetic organic chemistry.

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The purpose of this study was to develop a driving behavior scale for professional drivers of heavy semi-trailer trucks in China, and study the causes of such driving behavior and its impact on traffic safety operation. Data was processed by IBM SPSS 25. In addition to principal component analysis, Promax rotation, Bartlett's test, Cronbach's alpha, correlation analysis and binary logistic regression were examined.

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The Qinghai-Tibet Plateau endemic Chinese mountain cat has a controversial taxonomic status, whether it is a true species or a wildcat () subspecies and whether it has contributed to cat () domestication in East Asia. Here, we sampled lineages across China and sequenced 51 nuclear genomes, 55 mitogenomes, and multilocus regions from 270 modern or museum specimens. Genome-wide analyses classified the Chinese mountain cat as a wildcat conspecific , which was not involved in cat domestication of China, thus supporting a single domestication origin arising from the African wildcat ().

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A site-specific oxidation of (sp)C-C(sp) and (sp)C-H bonds in aryl alkanes by the use of NaNO/HCl was explored. The method is chemical-oxidant-free, transition-metal-free, uses water as the solvent, and proceeds under mild conditions, making it valuable and attractive to synthetic organic chemistry.

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Article Synopsis
  • A direct and specific method was developed to alkylate (sp)C-H bonds using aliphatic boronic acids.
  • By heating glycinates and amines with these alkylboronic acids in the presence of oxygen, researchers synthesized various unnatural α-amino acids and peptides.
  • This approach allowed for good yields of the desired products, showcasing a new way to create complex organic compounds.
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Objective: Access design is a critical factor that influences the safety and mobility of urban/suburban multilane highways due to the interactions between access movements and through traffic. An effective way for improving the safety and mobility of multilane highways is to control access maneuvers by implementing appropriate access designs. Understanding the impact of access designs on crash injury severity is beneficial for implementing effective countermeasures to mitigate crash injury at access points.

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