Multiple Hydrogen-Bond Array Reinforced Cellular Polymer Films from Colloidal Crystalline Assemblies of Soft Latex Particles

2012 ◽  
Vol 1 (5) ◽  
pp. 603-608 ◽  
Author(s):  
Yunhua Chen ◽  
Samuel T. Jones ◽  
Ian Hancox ◽  
Richard Beanland ◽  
Edward J. Tunnah ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Polymer Films ◽  
Latex Particles ◽  
Multiple Hydrogen Bond ◽  
Cellular Polymer

Multiple hydrogen-bond-induced supramolecular nanostructure from a pincer-like molecule and a [60]fullerene derivative

Tetrahedron ◽  
2005 ◽  
Vol 61 (36) ◽  
pp. 8686-8693 ◽  
Author(s):  
Junpeng Zhuang ◽  
Weidong Zhou ◽  
Xiaofang Li ◽  
Yongjun Li ◽  
Ning Wang ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Fullerene Derivative ◽  
Multiple Hydrogen Bond

Enantioselective Construction of Spirooxindole Derivatives through [3+2] Annulation Catalyzed by a Bisthiourea as a Multiple-Hydrogen-Bond Donor

2012 ◽  
Vol 19 (6) ◽  
pp. 1914-1918 ◽  
Author(s):  
Yan Shi ◽  
Aijun Lin ◽  
Haibin Mao ◽  
Zhijie Mao ◽  
Weipeng Li ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bond Donor ◽  
Multiple Hydrogen Bond

Molecular Engineering of β-Substituted Oxoporphyrinogens for Hydrogen-Bond Donor Catalysis

2019 ◽  
Author(s):  
Mandeep K. Chahal ◽  
Daniel Payne ◽  
Yoshitaka Matsushita ◽  
Jan Labuta ◽  
Katsuhiko Ariga ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Molecular Engineering ◽  
Hydrogen Bond Donor ◽  
Conjugate Additions ◽  
Bond Forming ◽  
Michael Additions ◽  
New Class ◽  
Hydrogen Bonding Interactions ◽  
Multiple Hydrogen Bond ◽  
Intramolecular Hydrogen

<p>A new class of bifunctional hydrogen-bond donor organocatalyst using oxoporphyrinogens with increased intramolecular hydrogen-bond donor distances is reported. Oxoporphyrinogens are highly non-planar rigid macrocycles containing a multiple hydrogen bond forming binding site. In this work we report the first example of non-planar OxPs as hydrogen-bond donor catalysts. The introduction of β-substituents is key to the catalytic activity and the catalysts are able to catalyze 1,4-conjugate additions and sulfa-Michael additions, as well as, Henry and aza-Henry reactions at low catalyst loadings (≤ 1 mol%) under mild conditions. Preliminary mechanistic studies have been carried out and a possible reaction mechanism has been proposed based on the bi-functional activation of both substrates through hydrogen-bonding interactions.</p>

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