The first structurally characterized, quadruple-bonded complexes containing chiral amine ligands; syntheses, structures and optical activities of [Mo2Cl4(S-chea)4] and [Mo2Cl4(R-chea)4] (chea = 1-cyclohexylethylamine) †

1998 ◽  
pp. 31-36 ◽  
Author(s):  
Huey-Lin Chen ◽  
Chang-Tai Lee ◽  
Chun-Ting Chen ◽  
Jhy-Der Chen ◽  
Lin-Shu Liou ◽  
...  
Keyword(s):  
Chiral Amine ◽  
Amine Ligands ◽  
Bonded Complexes

Chiral amine ligands at rhenium(V) pentahydride complexes allow for characterization of an energetically accessible and reversible steric inversion of diastereotopic phosphorus atoms

2022 ◽  
Vol 531 ◽  
pp. 120741
Author(s):  
Birudala Geetha ◽  
Andrew L. Petrou ◽  
Marina Mansour ◽  
Sarah M. Tadros ◽  
Datta V. Naik ◽  
...  
Keyword(s):  
Chiral Amine ◽  
Amine Ligands

New chiral amine ligands in the desymmetrization of prochiral phosphine boranes

2004 ◽  
Vol 15 (22) ◽  
pp. 3531-3538 ◽  
Author(s):  
Magnus J. Johansson ◽  
Lennart Schwartz ◽  
Mohamed Amedjkouh ◽  
Nina Kann
Keyword(s):  
Chiral Amine ◽  
Amine Ligands

Addition of Tetrachloromethane to Styrene Catalyzed by Copper-Chiral Amine Complexes

1992 ◽  
Vol 57 (12) ◽  
pp. 2622-2628 ◽  
Author(s):  
Martin Kotora ◽  
Milan Hájek ◽  
Christian Döbler
Keyword(s):  
Addition Reaction ◽  
Asymmetric Induction ◽  
Chiral Amine ◽  
Amine Complexes ◽  
Amine Ligands

Copper(I)-chiral amine complexes were found to be very efficient catalysts for addition reaction of tetrachloro- and bromotrichloromethane with styrene (yields over 90%). However, both monodentate and bidentate chiral amine ligands (I-VIII) gave a low asymmetric induction (up to 2.3% ee).

New chiral amine ligands for enantioselective synthesis of certain (S)- and (R)-monobactams

2000 ◽  
Vol 23 (2) ◽  
pp. 125-136 ◽  
Author(s):  
M. Hussein ◽  
A. El-Shorbagi ◽  
N. Omar ◽  
Z. Farghaly ◽  
Kiyoshi Tomioka
Keyword(s):  
Enantioselective Synthesis ◽  
Chiral Amine ◽  
Amine Ligands

New Chiral Amine Ligands in the Desymmetrization of Prochiral Phosphine Boranes.

ChemInform ◽  
2005 ◽  
Vol 36 (14) ◽  
Author(s):  
Magnus J. Johansson ◽  
Lennart Schwartz ◽  
Mohamed Amedjkouh ◽  
Nina Kann
Keyword(s):  
Chiral Amine ◽  
Amine Ligands

scholarly journals Relativistic Effects on NMR Parameters of Halogen-Bonded Complexes

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4399 ◽  
Author(s):  
Ibon Alkorta ◽  
José Elguero ◽  
Manuel Yáñez ◽  
Otilia Mó ◽  
M. Merced Montero-Campillo
Keyword(s):  
Relativistic Effects ◽  
Lewis Base ◽  
Coupling Constants ◽  
Basic Site ◽  
Lewis Bases ◽  
Nmr Parameters ◽  
Quadrupolar Coupling ◽  
Binary Complexes ◽  
Computational Level ◽  
Bonded Complexes

Relativistic effects are found to be important for the estimation of NMR parameters in halogen-bonded complexes, mainly when they involve the heavier elements, iodine and astatine. A detailed study of 60 binary complexes formed between dihalogen molecules (XY with X, Y = F, Cl, Br, I and At) and four Lewis bases (NH3, H2O, PH3 and SH2) was carried out at the MP2/aug-cc-pVTZ/aug-cc-pVTZ-PP computational level to show the extent of these effects. The NMR parameters (shielding and nuclear quadrupolar coupling constants) were computed using the relativistic Hamiltonian ZORA and compared to the values obtained with a non-relativistic Hamiltonian. The results show a mixture of the importance of the relativistic corrections as both the size of the halogen atom and the proximity of this atom to the basic site of the Lewis base increase.

Continuous production of a chiral amine in a packed bed reactor with co-immobilized amine dehydrogenase and formate dehydrogenase

2021 ◽  
Vol 407 ◽  
pp. 127065
Author(s):  
Robert D. Franklin ◽  
Joshua A. Whitley ◽  
Adam A. Caparco ◽  
Bettina R. Bommarius ◽  
Julie A. Champion ◽  
...  
Keyword(s):  
Formate Dehydrogenase ◽  
Continuous Production ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Chiral Amine ◽  
Amine Dehydrogenase
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