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Duan, Zhongyu,Ma, Guoli,Zhang, Wenjun Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.12
A novel copper nanoparticles were synthesized from cupric sulfate using hydrazine as reducing reagents. A series of aromatic nitro compounds were reacted with sodium borohydride in the presence of the copper nanoparticles catalysts to afford the aromatic amino compounds in high yields. Additionally, the catalysts system can be recycled and maintain a high catalytic effect in the reduction of aromatic nitro compounds.
Zhongyu Duan,Guoli Ma,Wenjun Zhang 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.12
A novel copper nanoparticles were synthesized from cupric sulfate using hydrazine as reducing reagents. A series of aromatic nitro compounds were reacted with sodium borohydride in the presence of the copper nanoparticles catalysts to afford the aromatic amino compounds in high yields. Additionally, the catalysts system can be recycled and maintain a high catalytic effect in the reduction of aromatic nitro compounds.
Han, Bing,Zhang, Li,Liu, Binyuan,Dong, Xiaofang,Kim, Il,Duan, Zhongyu,Theato, Patrick American Chemical Society 2015 Macromolecules Vol.48 No.11
<P>A facile strategy has been demonstrated for the selective synthesis of highly stereoregular polyesters with <I>cis</I>-2,3-(<I>exo</I>,<I> exo</I>) or <I>trans</I>-2,3-(<I>exo</I>,<I> endo</I>) repeating units by the organocatalysts mediated alternating copolymerization of cyclohexene oxide and norbornene anhydride (NA) stereoisomers. The geometrical structure of polyester can be tuned simply by modulating the type of NA isomers (<I>endo</I>- or <I>exo</I>-NA), monomer feed ratio, and reaction temperature. The <I>cis</I>- (>99%) and <I>trans</I>-polyesters (>99%) exhibit high glass transition temperature up to 129.8 and 115.9 °C, respectively. The resulting polyesters provide a versatile platform to incorporate various functional groups through the robust thiol–ene reaction of the pendant norbornenyl groups.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/mamobx/2015/mamobx.2015.48.issue-11/acs.macromol.5b00555/production/images/medium/ma-2015-00555x_0010.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ma5b00555'>ACS Electronic Supporting Info</A></P>