17O MAS NMR studies of oxo-based olefin metathesis catalysts: a critical assessment of signal enhancement methods

2016 ◽  
Vol 18 (40) ◽  
pp. 28157-28163 ◽  
Author(s):  
D. Grekov ◽  
Y. Bouhoute ◽  
I. Del Rosal ◽  
L. Maron ◽  
M. Taoufik ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
Supported Catalysts ◽  
Signal Enhancement ◽  
Critical Assessment ◽  
Mas Nmr ◽  
Nmr Studies ◽  
Metathesis Catalysts ◽  
Optimal Signal

We assessed the DFS parameters for robust and optimal signal enhancement in 17O NMR studies of silica-supported catalysts.

Activated Hoveyda‐Grubbs Olefin Metathesis Catalysts Derived from a Large Scale Produced Pharmaceutical Intermediate—Sildenafil Aldehyde

2021 ◽  
Author(s):  
Louis Monsigny ◽  
Jakub Piątkowski ◽  
Damian Trzybiński ◽  
Krzysztof Wozniak ◽  
Tomasz Nienałtowski ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
Large Scale ◽  
Metathesis Catalysts

High-Field1H MAS and15N CP-MAS NMR Studies of Alanine Tripeptides and Oligomers:  Distinction of Antiparallel and Parallel β-Sheet Structures and Two Crystallographically Independent Molecules

2007 ◽  
Vol 111 (30) ◽  
pp. 9172-9178 ◽  
Author(s):  
Yu Suzuki ◽  
Michi Okonogi ◽  
Kazuo Yamauchi ◽  
Hiromichi Kurosu ◽  
Masataka Tansho ◽  
...  
Keyword(s):  
Mas Nmr ◽  
Nmr Studies ◽  
Independent Molecules ◽  
Cp Mas Nmr ◽  
Β Sheet

Nitrenium ions and trivalent boron ligands as analogues of N-heterocyclic carbenes in olefin metathesis: a computational study

2015 ◽  
Vol 44 (46) ◽  
pp. 20021-20026 ◽  
Author(s):  
A. Pazio ◽  
K. Woźniak ◽  
K. Grela ◽  
B. Trzaskowski
Keyword(s):  
Olefin Metathesis ◽  
Computational Study ◽  
Heterocyclic Carbenes ◽  
Mechanistic Study ◽  
Nitrenium Ions ◽  
Nitrenium Ion ◽  
Metathesis Catalysts

A DFT mechanistic study reveals that nitrenium ion-modified Hoveyda-like complexes are good candidates for latent metathesis catalysts, while boron-modified systems are candidates for very fast metathesis catalysts.

Solid-State MAS NMR Studies of Sulfonic Acid-Functionalized SBA-15

2007 ◽  
Vol 32 (4) ◽  
pp. 513-526 ◽  
Author(s):  
R. Kanthasamy ◽  
I. K. Mbaraka ◽  
B. H. Shanks ◽  
S. C. Larsen
Keyword(s):  
Solid State ◽  
Sulfonic Acid ◽  
Mas Nmr ◽  
Nmr Studies
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