Quantum chemical calculations for reaction prediction in the development of synthetic methodologies

H Hayashi, S Maeda, T Mita - Chemical Science, 2023 - pubs.rsc.org
Quantum chemical calculations have been used in the development of synthetic
methodologies to analyze the reaction mechanisms of the developed reactions. Their ability …

Cyclic nitriles: tactical advantages in synthesis

FF Fleming, Z Zhang - Tetrahedron, 2005 - Elsevier
Cyclic nitriles have a long and distinguished history as versatile synthetic intermediates. 1
The versatility stems from the nitrile's extremely high polar-inductive effect, 2 their excellent …

Why is tetrazole formation by addition of azide to organic nitriles catalyzed by zinc (II) salts?

F Himo, ZP Demko, L Noodleman… - Journal of the American …, 2003 - ACS Publications
The mechanism by which zinc (II) catalyzes the union of an azide ion with organic nitriles to
form tetrazoles is investigated by means of density functional theory using the hybrid …

Substituent effects in mechanochemical allowed and forbidden cyclobutene ring-opening reactions

CL Brown, BH Bowser, J Meisner… - Journal of the …, 2021 - ACS Publications
Woodward and Hoffman once jested that a very powerful Maxwell demon could seize a
molecule of cyclobutene at its methylene groups and tear it open in a disrotatory fashion to …

Enamide-Benzyne-[2 + 2] Cycloaddition: Stereoselective Tandem [2 + 2]−Pericyclic Ring-Opening−Intramolecular N-Tethered [4 + 2] Cycloadditions

JB Feltenberger, R Hayashi, Y Tang, ESC Babiash… - Organic …, 2009 - ACS Publications
Benzyne-[2+ 2] cycloadditions with enamides are described. This effort led to the
development of a highly stereoselective tandem [2+ 2] cycloaddition− pericyclic ring …

Direct insertion into the C–C bond of unactivated ketones with NaH-mediated aryne chemistry

F Luo, CL Li, P Ji, Y Zhou, J Gui, L Chen, Y Yin… - Chem, 2023 - cell.com
Here, we document the reinvention of aryne chemistry with" old" o-diiodoarenes as aryne
progenitors. We have established a NaH-mediated activation strategy for the generation of …

New insights into the torquoselectivity of the Staudinger reaction

Y Liang, L Jiao, S Zhang, ZX Yu… - Journal of the American …, 2009 - ACS Publications
To understand the torquoselectivity and the electronic effects of the Staudinger reaction, a
study using a combination of experiments and DFT calculations has been conducted for the …

Stereoselective control in the Staudinger reactions involving monosubstituted ketenes with electron acceptor substituents: experimental investigation and theoretical …

H Qi, X Li, J Xu - Organic & Biomolecular Chemistry, 2011 - pubs.rsc.org
The stereoselectivity of the Staudinger reactions involving monosubstituted ketenes with
electron acceptor substituents was investigated experimentally by determination of the …

Distinguishing and quantifying the torquoselectivity in competitive ring‐opening reactions using the stress tensor and QTAIM

H Guo, A Morales‐Bayuelo, T Xu… - Journal of …, 2016 - Wiley Online Library
Currently the theories to explain and predict the classification of the electronic
reorganization due to the torquoselectivity of a ring‐opening reaction cannot accommodate …

[PDF][PDF] An efficient flow-photochemical synthesis of 5H-furanones leads to an understanding of torquoselectivity in cyclobutenone rearrangements

DC Harrowven, M Mohamed, TP Gonçalves… - Angew. Chem. Int …, 2012 - academia.edu
Thermal rearrangements of cyclobutenones give access to numerous ring systems and have
proven especially valuable for the de novo synthesis of quinones, benzoquinones, and …