chiral diamines
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scholarly journals Synthesis of Optically Active Polyguanidines by Polyaddition Reaction of Biscarbodiimides with Chiral Diamines

ACS Omega ◽  
2021 ◽  
Author(s):  
Momoko Hara ◽  
Keiji Minagawa ◽  
Yasushi Imada ◽  
Yukihiro Arakawa
Keyword(s):  
Optically Active ◽  
Chiral Diamines

Atroposelective Transfer Hydrogenation of Biaryl Aminals via Dynamic Kinetic Resolution. Synthesis of Axially Chiral Diamines

ACS Catalysis ◽  
2021 ◽  
pp. 4117-4124
Author(s):  
José A. Carmona ◽  
Carlos Rodríguez-Franco ◽  
Joaquín López-Serrano ◽  
Abel Ros ◽  
Javier Iglesias-Sigüenza ◽  
...  
Keyword(s):  
Kinetic Resolution ◽  
Transfer Hydrogenation ◽  
Dynamic Kinetic Resolution ◽  
Axially Chiral ◽  
Chiral Diamines

scholarly journals Intermolecular Chirality Modulation of Binaphthalene-Bridged Bisporphyrins With Chiral Diamines

2021 ◽  
Vol 8 ◽  
Author(s):  
Wenxin Lu ◽  
Lei Gong ◽  
Chaorui Su ◽  
Qibao Wang ◽  
Qing Ling ◽  
...  
Keyword(s):  
Molecular Modeling ◽  
Optical Sensing ◽  
Supramolecular Interactions ◽  
Chiral Diamine ◽  
Sandwich Type ◽  
Chiral Diamines ◽  
Circular Dichroïsm ◽  
Porphyrin Dimers ◽  
Nmr Titrations

A new pair of 2,2ʹ-diamino-1,1ʹ-binaphthyl linked porphyrin dimers, (R)-/(S)-H, were synthesized to study their supramolecular interactions with a pair of chiral diamines ((R)-/(S)-PPDA) by using UV-Vis absorption, fluorescence and NMR titrations. The spectroscopic titrations indicated that sandwich-type 1:1 complexes were formed at low guest concentration and then transformed to 1:2 open complexes at high guest concentration. The supramolecular interactions afforded sensitive circular dichroism responses, and the CD signs of the 1:1 complexes are decided by the stereostructure of chiral diamine guests. Moreover, due to the shortened linking units, (R)-/(S)-H show more sensitive and predicable CD response than the previously reported hosts (R)-/(S)-H1 and this can be reasonably explained by DFT molecular modeling. The present results suggest (R)-/(S)-H are promising for chiral optical sensing.

A simple and efficient asymmetric hydrogenation of heteroaromatic ketones with iridium catalyst composed of chiral diamines and achiral phosphines

2020 ◽  
Vol 61 (39) ◽  
pp. 152356
Author(s):  
Chun Li ◽  
Xunhua Lu ◽  
Mengna Wang ◽  
Ling Zhang ◽  
Jian Jiang ◽  
...  
Keyword(s):  
Asymmetric Hydrogenation ◽  
Iridium Catalyst ◽  
Chiral Diamines

Highly activity asymmetric hydrogenation of enones catalyzed by iridium complexes with chiral diamines and achiral phosphines

2020 ◽  
Vol 61 (13) ◽  
pp. 151661
Author(s):  
Xunhua Lu ◽  
Mengna Wang ◽  
Ling Zhang ◽  
Jian Jiang ◽  
Li Li ◽  
...  
Keyword(s):  
Asymmetric Hydrogenation ◽  
Iridium Complexes ◽  
Chiral Diamines

Fluorescent chirality recognition by simple boronate ensembles with aggregation-induced emission capability

2017 ◽  
Vol 53 (73) ◽  
pp. 10144-10147 ◽  
Author(s):  
Meiko Kawai ◽  
Ayaka Hoshi ◽  
Ryuhei Nishiyabu ◽  
Yuji Kubo
Keyword(s):  
Cinchona Alkaloids ◽  
Aggregation Induced Emission ◽  
Aggregation Behaviors ◽  
Chiral Diamines ◽  
Fluorescent Recognition

Chiral boronate ensembles showed enantioselective aggregation behaviors for chiral diamines and cinchona alkaloids, enabling the fluorescent recognition of their chirality.

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