Results 81 to 90 of about 6,329 (228)

Catalytic stereoselective [2,3]-rearrangement reactions [PDF]

open access: yes, 2015
The authors thank the Royal Society for a University Research Fellowship (A.D.S.), the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-20013) ERC Grant Agreement No.
Kasten, Kevin   +4 more
core   +1 more source

Development of Novel Density Functionals for Thermochemical Kinetics

open access: yes, 2004
A new density functional theory (DFT) exchange-correlation functional for the exploration of reaction mechanisms is proposed. This new functional, denoted BMK (Boese-Martin for Kinetics), has an accuracy in the 2 kcal/mol range for transition state ...
Boese, A. Daniel, Martin, Jan M. L.
core   +1 more source

Synthetic utility and reactivity of N-alkynylazoles [PDF]

open access: yes, 2015
textThe chemistry of N-alkynylazoles is a newly emerging area of chemistry with particular interest in heterocycle synthesis. Synthetic preparations of this class of molecule have shown an increasing presence in literature, however, the synthetic ...
Gilbreath, Bradford Lynd
core  

Synthesis of Substituted 1-Thiocyanatobutadienes and their Application in a Diels-Alder /[3,3] Sigmatropic Rearrangement Tandem Reaction [PDF]

open access: yes, 2018
Summary.: The retrosynthetic analysis of Ibogamine, a natural psychotropic alkaloid with exceptional anti-addictive properties found in both enantiomeric forms, requires an efficient access to a racemic cyclohexene.
Lanaspèze, Sébastien, Neier, Reinhard
core  

Three applications of path integrals: equilibrium and kinetic isotope effects, and the temperature dependence of the rate constant of the [1,5] sigmatropic hydrogen shift in (Z)-1,3-pentadiene [PDF]

open access: yes, 2018
Recent experiments have confirmed the importance of nuclear quantum effects even in large biomolecules at physiological temperature. Here we describe how the path integral formalism can be used to describe rigorously the nuclear quantum effects on ...
Vaníček, Jiří, Zimmermann, Tomáš
core  

Novel Synthesis and Structures of Tris-Annelated Benzene Donors for the Electron-Density Elucidation of the Classical Mills−Nixon Effect [PDF]

open access: yes, 1998
A versatile method for the high-yield synthesis of various tris-, bis-, and mono-annelated benzenes (as well as cyclooctatetraene) is based on the Pd-catalyzed coupling of three (or four) ethylenic units comprised of α,β-dibromoalkenes and α‘-alkenyl ...
Kochi, Jay K.   +3 more
core   +1 more source

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