Divergent Behavior in the Cyclopalladation of Phosphorus Ylides and Iminophosphoranes

2007 ◽  
Vol 26 (14) ◽  
pp. 3541-3551 ◽  
Author(s):  
David Aguilar ◽  
Miguel Angel Aragüés ◽  
Raquel Bielsa ◽  
Elena Serrano ◽  
Rafael Navarro ◽  
...  
2021 ◽  
Author(s):  
Rashmini Sharma ◽  
Gurmeet Singh ◽  
Shavneet Sharma
Keyword(s):  

Author(s):  
Héctor López-Mendoza ◽  
Antonio Montañés ◽  
Franciso Javier Moliner-Lahoz

Spain experienced a second wave of the COVID-19 pandemic in autumn 2020, which has been approached with different measures by regional authorities. We analyze the presence of convergence in the cumulative incidence for 14 days (CI14) in provinces and self-governing cities. The Phillips–Sul methodology was used to study the grouping of behavior between provinces, and an ordered logit model was estimated to understand the forces that drive creating the different convergence clubs. We reject the presence of a single pattern of behavior in the evolution of the CI14 across territories. Four statistically different convergence clubs and an additional province (Madrid) with divergent behavior are observed. Provinces with developed agricultural and industrial economic sectors, high mobility, and a high proportion of Central and South American immigrants had the highest level of CI14. We show that the transmission of the virus is not homogeneous in the Spanish national territory. Our results are helpful for identifying differences in determinants that could explain the pandemic’s evolution and for formulating hypotheses about the effectiveness of implemented measures.


2009 ◽  
Vol 2009 (5) ◽  
pp. 277-282 ◽  
Author(s):  
Fouad Soliman ◽  
Ibrahim Abd-Ellah ◽  
Soher Maigali ◽  
Gamal Abd-El-Naim

The reaction of Hg2+,Cd2+,Co2+, and Ni2+ ions with 1 mol of the ligands 2-methylquinoline-4-ol,3[(diethylamino)methyl]-2-methylquinoline-4-ol, and methyl-3-(4-hyrdoxy-2-methylquinoline-3-yl)-2-(triphenylphosphoranylidene)propanoate, has been investigated to give the corresponding 1:1 metal:ligand complexes. Reaction of 2 mol of the ligand gave the corresponding 1:2 metal:ligand complexes. The coordination takes place only through the quinoline nitrogen atom. The spectroscopic and the physicochemical data of the new metal complexes are discussed.


ChemInform ◽  
2010 ◽  
Vol 33 (19) ◽  
pp. no-no
Author(s):  
Thomas D. Avery ◽  
Gary Fallon ◽  
Ben W. Greatrex ◽  
Simon M. Pyke ◽  
Dennis K. Taylor ◽  
...  

1974 ◽  
Vol 3 (5) ◽  
pp. 405-408 ◽  
Author(s):  
Manabu Seno ◽  
Shinji Tsuchiya ◽  
Teruzo Asahara

ChemInform ◽  
2009 ◽  
Vol 40 (10) ◽  
Author(s):  
Sebastien Redon ◽  
Stephane Leleu ◽  
Xavier Pannecoucke ◽  
Xavier Franck ◽  
Francis Outurquin

ChemInform ◽  
2010 ◽  
Vol 27 (21) ◽  
pp. no-no
Author(s):  
O. I. KOLODIAZHNYI
Keyword(s):  

1990 ◽  
Vol 29 (8) ◽  
pp. 896-898 ◽  
Author(s):  
D. Scott Bohle ◽  
Daniel Heineke ◽  
Antonio Tiripicchio ◽  
Marisa Tiripicchio Camellini ◽  
Heinrich Vahrenkamp

2014 ◽  
Vol 50 (62) ◽  
pp. 8539-8542 ◽  
Author(s):  
Shen Liu ◽  
Wenteng Chen ◽  
Jing Luo ◽  
Yongping Yu

Tandem Michael addition and Witting or Horner–Wadsworth–Emmons olefination initiated [3+3] annulation between vinyl azides and allylic phosphorus ylides or allylic phosphoryl-stabilized carbanions has been developed.


1983 ◽  
Vol 14 (9) ◽  
Author(s):  
I. V. BORISOVA ◽  
N. N. ZEMLYANSKY ◽  
V. K. BELSKY ◽  
N. D. KOLOSOVA ◽  
A. N. SOBOLEV ◽  
...  

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