Dynamic optical activity induction in the N-alkyl-N′-trityl ureas and thioureas

2019 ◽  
Vol 17 (33) ◽  
pp. 7782-7793 ◽  
Author(s):  
Natalia Prusinowska ◽  
Agnieszka Czapik ◽  
Martika Wojciechowska ◽  
Marcin Kwit
Keyword(s):  
Hydrogen Bonding ◽  
Optical Activity ◽  
Optically Active ◽  
Thiourea Derivatives ◽  
Hydrogen Bonding Network ◽  
Activity Induction

Stereodynamic trityl group, utilized as a reporter of chirality, hampers hydrogen bonding network in optically active urea and thiourea derivatives.

The hydrogen-bonding network in deacetylcephalothin

2005 ◽  
Vol 61 (11) ◽  
pp. o625-o627
Author(s):  
Janusz Zachara ◽  
Izabela D. Madura ◽  
Andrzej Zimniak ◽  
Irena Oszczapowicz ◽  
Iwona Chrobak
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonding Network

Remarkable low symmetry hydrogen bonding network in the structure of ReCl2(NCMe)(NO)(PMe3)2

2000 ◽  
Vol 306 (2) ◽  
pp. 153-159 ◽  
Author(s):  
Heiko Jacobsen ◽  
Helmut W Schmalle ◽  
Andreas Messmer ◽  
Heinz Berke
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonding Network ◽  
Low Symmetry

On the syntheses and the optical properties of optically active 2-pyrazoline compounds

1979 ◽  
Vol 57 (3) ◽  
pp. 360-366 ◽  
Author(s):  
Makoto Mukai ◽  
Takashi Miura ◽  
Masahiro Nanbu ◽  
Toshinobu Yoneda ◽  
Yohji Shindo
Keyword(s):  
Optical Properties ◽  
Optical Activity ◽  
Optically Active ◽  
Spectroscopic Techniques ◽  
Considerable Influence ◽  
Pyrazoline Ring

Optically active 2-pyrazolines were synthesized and their optical properties were studied using various spectroscopic techniques to investigate the effects of substituents at the 3 and 5 positions of the 2-pyrazoline ring on their optical activity. It was found that in the case of 5-substituted-1,3-diphenyl-2-pyrazoline derivatives, the substituent at the 5 position has considerable influence on the optical activity, whereas in 3-substituted-1,5-diphenyl-2-pyrazoline derivatives, the substituent at the 3 position has no such influence.

Sign in / Sign up

Export Citation Format

Share Document