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141.
Yang Li Bang Liu Ren‐Jie Song Qiu‐An Wang Jin‐Heng Li 《Advanced Synthesis \u0026amp; Catalysis》2016,358(8):1219-1228
A new visible light‐initiated 1,5‐hydride radical shift strategy has been developed to enable the one‐step functionalization of both a C(sp3) Br bond and a C(sp3) H bond adjacent to the same carbon atom. This visible light photoredox catalysis offers a mild and straightforward access to diverse five‐membered carbocyclic ring‐fused polycyclic hydrocarbons with high turnover numbers (TONs; up to 4.93×103) and broad substrate scope.
142.
Ai‐Bao Xia Gong‐Jian Pan Chao Wu Xue‐Li Liu Xiao‐Long Zhang Zhao‐Bo Li Xiao‐Hua Du Dan‐Qian Xu 《Advanced Synthesis \u0026amp; Catalysis》2016,358(20):3155-3160
An enantioselective one‐pot Michael/Michael/Henry/hemiacetalization reaction between α,β‐unsaturated aldehydes, α‐ketoamides, and nitroalkenes under mild conditions catalyzed by a diarylprolinol silyl ether has been developed. The sequential methodology provides a direct approach to a wide range of fully substituted chiral oxabicyclo[2.2.2]octanes with seven contiguous stereocenters in moderate to excellent yields (up to 99%), high to excellent diastereoselectivities (up to >25:1 dr), and high to excellent enantioselectivities (up to 99% ee).
143.
Ruwei Shen Jianlin Yang Bing Luo Lixiong Zhang Li‐Biao Han 《Advanced Synthesis \u0026amp; Catalysis》2016,358(23):3897-3906
The copper‐catalyzed reaction of 5‐substituted penta‐1,4‐diyn‐3‐yl acetates with P(O)H compounds to efficiently give a new class of phosphonyl diynes is reported. The reaction may take place through a regioselective nucleophilic attack of phosphorus nucleophiles on Cu‐allenylidene intermediates to form allenyl intermediates followed by a rapid allene‐alkyne isomerization process. The synthetic utility of the obtained products is demonstrated.
145.
Zhang Zhao Xin Yang Shang Ke Shen Jun Wei Yang Jia Bian Jun Zhang Ai Ping Lin Hai Lan Chen Dai Qiang 《Journal of Polymer Research》2022,29(11):1-12
Journal of Polymer Research - In this paper, we aimed to develop the nanocarrier based on poly (N-isopropyl acrylamide)—allyl acetoacetate grafted MoS2 nanosheets. The obtained polymer... 相似文献
146.
Han Liuyang Zhang Saisai Zhang Bowen Zhang Bo Hari Bala Zhang Zhanying 《Journal of Porous Materials》2022,29(1):269-278
Journal of Porous Materials - Aimed at detecting methane (CH4) gas at low operating temperature, porous ZnO/SnO2 nanocomposites were constructed through a simple two-step method. Pure SnO2 with a... 相似文献
147.
Yong Shi Lihui Wang Zhanrong Zhang Liguo Yang 《International Journal of Applied Ceramic Technology》2022,19(3):1626-1633
Ultrasonic surface treatment (UST) is a novel treatment method to improve the durability of cementitious materials, resulting in the formation of an ultrasonic hardening layer (UHL). The UHL acts as an effective natural coating, offering penetration and erosion protection. However, the formation mechanism and the quantitative characterization of the UHL have not been studied, and the validity of the UST on the top and side surfaces of cementitious materials is still unknown. Therefore, in this study, we investigated and proposed a formation mechanism for the UHL, and defined a transition layer between the UHL and the matrix. We also utilized HV microhardness testing to provide an effective quantitative characterization method for the UHL. Finally, using a set of custom-designed ultrasonic molds, we confirmed the validity of the UST on the top and side surfaces of the cementitious materials. 相似文献
148.
Silicon - 3D global simulations were performed to investigate the gas flow and impurities transport in casting silicon furnace under the influence of a unique designed spray-type gas guidance... 相似文献
149.
Song Huawei Pan Pengfei Xu Kaihua Zhang Yuping Yang Zhengxin Qiao Shaohua Xu Jianfeng 《SILICON》2022,14(6):2975-2988
Silicon - Fused silica is a kind of high-strength optical material, which is widely used in industry. It is slow and inefficient to process hard and brittle materials by conventional machining (CM)... 相似文献
150.
Silicon - A novel low-loss and good-robustness silicon-on-insulator lateral insulated gate bipolar transistor (LIGBT) is proposed and investigated by simulation for the first time. The device is... 相似文献