Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Chen-Yan Cai"'
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Oxidative allylic C–H functionalizations minimise the need for functional group activation and generate alkenyl-substituted products amenable to further chemical modifications. Here the authors report an oxidant-free, electrocatalytic approach to a
Externí odkaz:
https://doaj.org/article/f805f67bc6b2459a8fe06a15095cebe7
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Methods to prepare 1,2-diamines are desirable due the importance of these compounds as drug scaffolds and organic ligands for metals. Here, the authors report an electrochemical metal-free 1,2- diamination of aryl alkenes with sulfamides to 1,2-diami
Externí odkaz:
https://doaj.org/article/b59a4a032dcb465182ca19b66a7eb4a3
Autor:
Chen-Yan Cai, Hai-Chao Xu
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Dehydrogenative annulation is a valuable approach to heterocycles, however, stoichiometric oxidants are often required. Here, the authors describe the electrochemical dehydrogenative annulation of diols and alkenes to generate dioxanes and dioxepanes
Externí odkaz:
https://doaj.org/article/598214fe7f9d48c5aee9b007e9d820b5
Autor:
Chen-Yan Cai, Xiao-Li Lai, Yu Wang, Hui-Hui Hu, Jinshuai Song, Ye Yang, Cheng Wang, Hai-Chao Xu
Publikováno v:
Nature Catalysis. 5:943-951
Publikováno v:
Journal of the American Chemical Society. 144:11980-11985
The 1,2-diamine motif is prevalent in natural products, small-molecule pharmaceuticals, and catalysts for asymmetric synthesis. Transition metal catalyzed alkene diazidation has evolved to be an attractive strategy to access vicinal primary diamines
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Nature Communications
Nature Communications
Oxidative allylic C–H functionalization is a powerful tool to streamline organic synthesis as it minimizes the need for functional group activation and generates alkenyl-substituted products amenable to further chemical modifications. The intramole
Autor:
Hai-Chao Xu, Chen-Yan Cai
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Nature Communications
Nature Communications
Dehydrogenative annulation reactions are among the most straightforward and efficient approach for the preparation of cyclic structures. However, the applications of this strategy for the synthesis of saturated heterocycles have been rare. In additio
Publikováno v:
Applied Mechanics and Materials. :509-512
Draw on the motor vehicle drivers' psychological quality comprehensive evaluation method, Fuzzy Analytic Hierarchy Process, to scientific and rational analyze the current crew working pressure source and build a hierarchy strike indicators weight val
Excess-loop-delay compensation technique for CT ΔΣ modulator with hybrid active–passive loop-filters
Publikováno v:
Analog Integrated Circuits and Signal Processing. 76:35-46
The design and optimization methodology for CT ΣΔ modulators with hybrid Active---Passive (AP) loop-filters is indicated in this work. From the discussion, by appropriately scaling the passive filter gain and cooperating with a single-bit quantizer
Autor:
Zhihua Wang, Zhijie Chen, He-Gong Wei, Sai-Weng Sin, Yang Jiang, Rui P. Martins, Chen-Yan Cai, Seng-Pan U
Publikováno v:
2012 IEEE Asian Solid State Circuits Conference (A-SSCC).
A Feed-Forward (FF) multi-bit ΣΔ modulator with passive analog adder and 4-bit Successive Approximation (SA) quantizer is presented. The modulator covers the 10KHz bandwidth according to electromyography application. The design utilizes the same DA