Iridium‐Catalyzed Regio‐ and Enantioselective Borylation of Unbiased Methylene C(sp3)‐H Bonds at the Position Beta to a Nitrogen Center

2020 ◽  
Author(s):  
Rongrong Du ◽  
Luhua Liu ◽  
Senmiao Xu
Keyword(s):  
Nitrogen Center

scholarly journals C3-symmetry Mo3S4 aminophosphino clusters combining three sources of stereogenicity: stereocontrol directed by hydrogen bond interactions and ligand configuration

2016 ◽  
Vol 45 (18) ◽  
pp. 7829-7835 ◽  
Author(s):  
Carmina Alfonso ◽  
Marta Feliz ◽  
Vicent S. Safont ◽  
Rosa Llusar
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bond Interactions ◽  
Nitrogen Center

The reaction between Mo3S4Cl4(PPh)3(H2O)2 and (R)-PPro or (S)-PPro is diastereoselective towards the (P)-Mo3S4 configuration with the preservation of the aminophosphine chirality and the formation of a stereogenic nitrogen center.

Ag-Initiated gem-Difluoromethylenation of the Nitrogen Center of Arenediazonium Salts to gem-Difluoromethylene Azo Compounds

2017 ◽  
Vol 19 (9) ◽  
pp. 2406-2409 ◽  
Author(s):  
Haizhen Jiang ◽  
Yunrong Chen ◽  
Bo Chen ◽  
Hui Xu ◽  
Wen Wan ◽  
...  
Keyword(s):  
Azo Compounds ◽  
Nitrogen Center ◽  
Arenediazonium Salts

New P,N ligands with chiral nitrogen center: applications in homogeneous catalysis

2002 ◽  
Vol 643-644 ◽  
pp. 98-104 ◽  
Author(s):  
Christine Saluzzo ◽  
Jérémy Breuzard ◽  
Stéphane Pellet-Rostaing ◽  
Martial Vallet ◽  
Frédéric Le Guyader ◽  
...  
Keyword(s):  
Homogeneous Catalysis ◽  
Nitrogen Center

Chirality of the trisubstituted nitrogen center – XRD, dynamic NMR, and DFT investigation of 1,2-dihydrobenzo[e][1,2,4]triazine derivatives

Tetrahedron ◽  
2017 ◽  
Vol 73 (27-28) ◽  
pp. 3823-3830 ◽  
Author(s):  
Piotr Kaszyński ◽  
Arkadiusz Kłys ◽  
Sławomir Domagała ◽  
Krzysztof Woźniak
Keyword(s):  
Dynamic Nmr ◽  
Nitrogen Center ◽  
Triazine Derivatives

ChemInform Abstract: PHOTORACEMIZATION AT A CHIRAL PYRAMIDAL NITROGEN CENTER

1976 ◽  
Vol 7 (27) ◽  
pp. no-no
Author(s):  
J. BJOERGO ◽  
D. R. BOYD ◽  
R. M. CAMPBELL ◽  
D. C. NEILL
Keyword(s):  
Nitrogen Center

scholarly journals Dipolar addition to cyclic vinyl sulfones leading to dual conformation tricycles

2013 ◽  
Vol 9 ◽  
pp. 1419-1425 ◽  
Author(s):  
Steven S Y Wong ◽  
Michael G Brant ◽  
Christopher Barr ◽  
Allen G Oliver ◽  
Jeremy E Wulff
Keyword(s):  
Dft Calculations ◽  
Nmr Spectra ◽  
Room Temperature ◽  
Synthetic Methodology ◽  
Nitrogen Center ◽  
Azomethine Imines ◽  
Nmr Methods

Dipolar addition of cyclic azomethine imines with cyclic vinyl sulfones gave rise to functionalized tricycles that exhibited fluxional behavior in solution at room temperature. The scope of the synthetic methodology was explored, and the origin of the fluxional behavior was probed by NMR methods together with DFT calculations. This behavior was ultimately attributed to stereochemical inversion at one of two nitrogen centers embedded in the tricyclic framework. Two tetracycles were also synthesized, and the degree of signal-broadening in the NMR spectra was found to depend on the presence of substitution next to the inverting nitrogen center.

A New Paramagnetic Nitrogen Center in Natural Titanium-Containing Diamonds

2010 ◽  
Vol 39 (3) ◽  
pp. 303-308 ◽  
Author(s):  
V. A. Nadolinny ◽  
V. V. Golushko ◽  
O. P. Yuryeva ◽  
M. I. Rakhmanova ◽  
V. S. Shatsky
Keyword(s):  
Nitrogen Center
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