scholarly journals Intramolecular mobility of η5-ligands in chiral zirconocene complexes and the enantioselectivity of alkene functionalization by organoaluminum compounds

2016 ◽  
Vol 45 (32) ◽  
pp. 12814-12826 ◽  
Author(s):  
Lyudmila V. Parfenova ◽  
Irina V. Zakirova ◽  
Pavel V. Kovyazin ◽  
Stanislav G. Karchevsky ◽  
Galina P. Istomina ◽  
...  
Keyword(s):  
Organoaluminum Compounds ◽  
Conformational Behavior ◽  
Intramolecular Mobility ◽  
Alkene Functionalization

Conformational behavior of chiral zirconocenes affects their activity and enantioselectivity.

Conformational behavior of naphtho-merocyanine dimers on Au(111)

2021 ◽  
pp. 121837
Author(s):  
Andreas Riemann ◽  
Lucas Browning ◽  
Hunter Goff
Keyword(s):  
Conformational Behavior

scholarly journals Catalytic Systems Based on Cp2ZrX2 (X = Cl, H), Organoaluminum Compounds and Perfluorophenylboranes: Role of Zr,Zr- and Zr,Al-Hydride Intermediates in Alkene Dimerization and Oligomerization

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 39
Author(s):  
Lyudmila V. Parfenova ◽  
Pavel V. Kovyazin ◽  
Almira Kh. Bikmeeva ◽  
Eldar R. Palatov
Keyword(s):  
Diffusion Coefficients ◽  
Organoaluminum Compounds ◽  
Zirconium Hydride ◽  
Nmr Studies ◽  
Catalytic Systems ◽  
Selective Formation

The activity and chemoselectivity of the Cp2ZrCl2-XAlBui2 (X = H, Bui) and [Cp2ZrH2]2-ClAlEt2 catalytic systems activated by (Ph3C)[B(C6F5)4] or B(C6F5)3 were studied in reactions with 1-hexene. The activation of the systems by B(C6F5)3 resulted in the selective formation of head-to-tail alkene dimers in up to 93% yields. NMR studies of the reactions of Zr complexes with organoaluminum compounds (OACs) and boron activators showed the formation of Zr,Zr- and Zr,Al-hydride intermediates, for which diffusion coefficients, hydrodynamic radii, and volumes were estimated using the diffusion ordered spectroscopy DOSY. Bis-zirconium hydride clusters of type x[Cp2ZrH2∙Cp2ZrHCl∙ClAlR2]∙yRnAl(C6F5)3−n were found to be the key intermediates of alkene dimerization, whereas cationic Zr,Al-hydrides led to the formation of oligomers.

The intramolecular mobility of poly-n-alkylmethacrylates

1975 ◽  
Vol 17 (3) ◽  
pp. 675-682 ◽  
Author(s):  
Ye.V. Anufriyeva ◽  
V.D. Pautov ◽  
Ya.S. Freidzon ◽  
V.P. Shibayev ◽  
N.A. Plate
Keyword(s):  
Intramolecular Mobility

Synthesis of Benzodiazepine β-Turn Mimetics by an Ugi 4CC/Staudinger/Aza-Wittig Sequence. Solving the Conformational Behavior of the Ugi 4CC Adducts

2009 ◽  
Vol 74 (5) ◽  
pp. 2189-2192 ◽  
Author(s):  
María Sañudo ◽  
María García-Valverde ◽  
Stefano Marcaccini ◽  
Jacinto J. Delgado ◽  
Josefa Rojo ◽  
...  
Keyword(s):  
Conformational Behavior
Sign in / Sign up

Export Citation Format

Share Document