scholarly journals Chirality Conversion of Dipeptides in the Schiff Bases of Binol Aldehydes with Multiple Hydrogen Bond Donors

2009 ◽  
Vol 30 (2) ◽  
pp. 409-414 ◽  
Keyword(s):  
Hydrogen Bond ◽  
Schiff Bases ◽  
Multiple Hydrogen Bond ◽  
Hydrogen Bond Donors

Schiff bases as possible hydrogen bond donors and acceptors

2021 ◽  
pp. 130136
Author(s):  
Addi Dana Sánchez-Pacheco ◽  
Mónica Hernández-Vergara ◽  
Everardo Jaime-Adán ◽  
Simón Hernández-Ortega ◽  
Jesús Valdés-Martínez
Keyword(s):  
Hydrogen Bond ◽  
Schiff Bases ◽  
Hydrogen Bond Donors

scholarly journals Organocatalytic asymmetric Henry reaction of 1H-pyrrole-2,3-diones with bifunctional amine-thiourea catalysts bearing multiple hydrogen-bond donors

2016 ◽  
Vol 12 ◽  
pp. 295-300 ◽  
Author(s):  
Ming-Liang Zhang ◽  
Deng-Feng Yue ◽  
Zhen-Hua Wang ◽  
Yuan Luo ◽  
Xiao-Ying Xu ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Henry Reaction ◽  
Multiple Hydrogen Bond ◽  
Catalytic Asymmetric ◽  
Quaternary Stereocenters ◽  
First Time ◽  
Hydrogen Bond Donors

For the first time, a catalytic asymmetric Henry reaction of 1H-pyrrole-2,3-diones was achieved with a chiral bifunctional amine-thiourea as a catalyst possessing multiple hydrogen-bond donors. With this developed method, a range of 3-hydroxy-3-nitromethyl-1H-pyrrol-2(3H)-ones bearing quaternary stereocenters were obtained in acceptable yield (up to 75%) and enantioselectivity (up to 73% ee).

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

Investigation of Hydrogen Bonding Interaction between Bolaform Schiff Bases with Barbituric Acid by HPLC

2011 ◽  
Vol 356-360 ◽  
pp. 48-51
Author(s):  
Qi Tong ◽  
Ti Feng Jiao
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Liquid Chromatography ◽  
Schiff Bases ◽  
Barbituric Acid ◽  
Flexible Structure ◽  
Intermolecular Hydrogen Bonding ◽  
Acid Molecule ◽  
Hydrogen Bonding Interaction ◽  
Bonding Interaction

In order to investigate the intermolecular hydrogen bonding of special amphiphiles, two bolaform amphiphilic Schiff bases (GN1 and GN2) with different hydrophilic spacers were designed, and their interaction with barbituric acid were tested by liquid chromatography. The chromatographic properties showed that both the Schiff bases showed hydrogen bonding interaction with barbituric acid. In addition, the influence of various detectors was also studied on both cases. Experimental results show that the test with FLD showed better determination than other detectors. It is proposed that due to the directionality and strong matching of hydrogen bond, one barbituric acid molecule can be encapsulated into the intramolecular area of GN1, while two barbituric acid molecules were trapped into the GN2 molecule through intermolecular H-bonds for GN2 due to the long spacer and flexible structure. A rational complex mode was proposed.

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