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期刊论文 4

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2020 3

2015 1

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二维层状结构 1

含能材料 1

感度 1

稠环杂环化合物 1

稳定性 1

高能量 1

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Easy access to pharmaceutically relevant heterocycles by catalytic reactions involving

Ximei Zhao, Matthias Rudolph, Abdullah M. Asiri, A. Stephen K. Hashmi

《化学科学与工程前沿(英文)》 2020年 第14卷 第3期   页码 317-349 doi: 10.1007/s11705-019-1874-4

摘要: This review summarizes recent advances in the field of gold-catalyzed synthesis of pharmaceutically relevant aza-heterocycles via generated -imino gold carbene complexes as intermediates.

关键词: gold     heterocycles     alkynes    

Diversity-oriented synthesis of blue emissive nitrogen heterocycles and their conjugation with carbon

Viviana Maffeis, Lisa Moni, Daniele Di Stefano, Silvia Giordani, Renata Riva

《化学科学与工程前沿(英文)》 2020年 第14卷 第1期   页码 76-89 doi: 10.1007/s11705-019-1833-0

摘要: The search for new fluorescent molecules for possible applications as functional -electron systems and their conjugation with different nanomaterials is nowadays of paramount importance to broaden the availability of materials with different properties. Herein we present a diversity-oriented approach to heterocyclic luminophores based on a multicomponent Ugi reaction followed by a Pd-mediated cascade sequence. The new molecules are coupled to carbon nano-onions, and hybrid systems represent the first example of blue emitters conjugated with these carbon nanoparticles.

关键词: carbon nano-onions     multicomponent reactions     blue emitters     fluorescence     isoquinolines    

Fluoroalcohol-mediated reductive iodonio-Claisen rearrangement: Synthesis of complex

Hem Raj Khatri,Hai Nguyen,James K. Dunaway,Jianglong Zhu

《化学科学与工程前沿(英文)》 2015年 第9卷 第3期   页码 359-368 doi: 10.1007/s11705-015-1530-6

摘要: Reductive iodonio-Claisen rearrangement (RICR) involving -iodanes and allyl or substituted-allyl silanes in fluoroalcohols, such as 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) and 2,2,2-trifluoroethanol (TFE), was studied for the synthesis of complex -allyl or substituted-allyl iodoarenes. In comparison to the previously reported condition involving boron trifluoride diethyl etherate, the RICR mediated by fluoroalcohols was found to proceed more effectively. The resulting complex -allyl iodoarenes are useful synthetic intermediates and can be readily converted to various heterocyclic compounds.

关键词: hypervalent iodine     allylation     fluoroalcohol     Claisen rearrangement     heterocycles    

构建二维层状结构的稠环含能材料——高能量与高稳定性的平衡 Article

冯永安, 邓沐聪, 宋思维, 陈思同, 张庆华, Jean’ne M. Shreeve

《工程(英文)》 2020年 第6卷 第9期   页码 1006-1012 doi: 10.1016/j.eng.2020.01.013

摘要:

制造具有良好机械感度的高性能含能材料在过去几十年里一直是一项重大挑战,因为这类蕴含巨大能量的材料存在内在的不稳定性。本文研究了一种极具潜力的稠环含能材料:4-硝基-7-叠氮基-吡唑-[3,4-d]-1,2,3-三嗪-2-氧(NAPTO)。这种物质具有不同寻常的二维(2D)层状结构,其绝对结构已经单晶X射线衍射证实。研究显示,这一结构新颖的含能物质具有惊人的能量[如爆速(D)高达9.12 km·s–1,爆压(P)为35.1 GPa]、优异的机械感度[撞击感度(IS)为18 J、摩擦感度(FS)为325 N、静电感度(EDS)为0.32 J]和良好的热分解温度(203.2 ℃),展示出高能量与低感度的双重优势。据我们所知,NAPTO是首个具有二维层状结构的稠环含能材料。与此同时,运用分子模拟分析了其在外界机械刺激下的稳定机制,结果表明,该含能材料超平的二维层状结构比其他结构更能有效地缓冲外界机械刺激,从而将作用在材料上的机械能转化为晶体的层间滑动与压缩。本研究从实验和理论两个方面揭示了稠环二维层状结构在制造先进含能材料方面的巨大潜力。

关键词: 含能材料     稠环杂环化合物     二维层状结构     高能量     稳定性     感度    

标题 作者 时间 类型 操作

Easy access to pharmaceutically relevant heterocycles by catalytic reactions involving

Ximei Zhao, Matthias Rudolph, Abdullah M. Asiri, A. Stephen K. Hashmi

期刊论文

Diversity-oriented synthesis of blue emissive nitrogen heterocycles and their conjugation with carbon

Viviana Maffeis, Lisa Moni, Daniele Di Stefano, Silvia Giordani, Renata Riva

期刊论文

Fluoroalcohol-mediated reductive iodonio-Claisen rearrangement: Synthesis of complex

Hem Raj Khatri,Hai Nguyen,James K. Dunaway,Jianglong Zhu

期刊论文

构建二维层状结构的稠环含能材料——高能量与高稳定性的平衡

冯永安, 邓沐聪, 宋思维, 陈思同, 张庆华, Jean’ne M. Shreeve

期刊论文