排序方式: 共有21条查询结果,搜索用时 109 毫秒
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Stéphane Laval Wissam Dayoub Leyla Pehlivan Estelle Métay Dominique Delbrayelle Gérard Mignani Marc Lemaire 《Tetrahedron letters》2014
A simple and convenient method for the chemoselective reduction of nitriles into aldehydes using a 1,1,3,3-tetramethyldisiloxane (TMDS)/triisopropoxyvanadium(V) oxide reducing system is described. Aromatic as well as aliphatic nitriles are reduced into the corresponding aldehydes in moderate to good yields. 相似文献
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介绍了如何采用数字光通信技术实现计算机视频信号的长距离传输;介绍了数字显示接口(DVI)标准的相关知识,通过项目实施解决了其中的关键技术,项目成果达到了实用化程度. 相似文献
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A simple and practical procedure for the reduction of acetals to ethers is described. It is based on the use of a 1,1,3,3-tetramethyldisiloxane (TMDS)-Pd/C system in the presence of a Brønsted acid as the co-catalyst. The reaction occurs under mild conditions and ethers are obtained in high yields. 相似文献
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介绍了DVI接口在数字传输中的优点及其工作原理,对DVI接口进行扩展,设计了一个DVI的一进四出转接系统,以实现DVI的同步输出.同时在保证信号完整性方面,总结了高频混合信号电路在PCB布线中的注意事项. 相似文献
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由于HDMI是数字方式传输,它可以从根本上解决现行的机载雷达采用电视体制的PAL制或VGA制式的模拟信号在用于液晶显示时的要经历先D/A后A/D的变换所带来的损失,因此,提出用该种显示方式用于机载雷达的显示,此方法可大幅度地提高分辨率且无传输和变换损耗,本设计使用SiI9134为接口器件,数字视频形成电路由FPGA构成,实验证明此设计稳定可靠,完全可以达到产品要求。 相似文献
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Marie-Christine DuclosYuttapong Singjunla Christelle PetitAlain Favre-Réguillon Erwann JeanneauFlorence Popowycz Estelle MétayMarc Lemaire 《Tetrahedron letters》2012,53(45):5984-5986
P-Chirogenic monodentate binaphthyl phosphines were prepared in five steps from enantiomerically pure BINOL. This approach supposes the utilization of two methods previously developed in our group, the formation of secondary phosphine oxide, and the reduction of tertiary phosphine oxide using the association of tetramethyldisiloxane and Ti(OiPr)4. During the last reduction step, only the formation of the more stable diastereoisomer was observed. This product was employed as a ligand for the palladium catalyzed hydrosilylation of styrene to afford the corresponding alcohol with high yield and enantiomeric excess. 相似文献
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